{"title":"MerCruiser 4-Stroke 120-165HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width: 1000px; margin: 0 auto; padding: 12px 16px;\"\u003e\n  \u003cp\u003eDesigned for MerCruiser 4‑Stroke 120–165HP marine engines, this page helps you pinpoint compatible parts and key service information. Inside you’ll find maintenance intervals, common replacement items, and troubleshooting tips specific to these popular inline‑four sterndrive platforms. You can also browse our main MerCruiser collection at any time. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page use the “Filter \u0026amp; Sort” controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display: inline-block; margin-top: 8px; padding: 10px 14px; background: #0b5cab; color: #fff; text-decoration: none; border-radius: 4px;\"\u003eBrowse All MerCruiser Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 120–165HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial number: typically on an adhesive tag or plate on the engine block, flame arrestor cover, or near the flywheel housing. For the drive, check the sticker on the starboard side of the gimbal housing or the upper drive unit.\u003c\/li\u003e\n    \u003cli\u003eUse the serial to confirm engine displacement and generation: older 120HP packages are often 2.5L inline‑4; 140–165HP are commonly 3.0L inline‑4. This affects ignition, fuel, and cooling parts compatibility.\u003c\/li\u003e\n    \u003cli\u003eIdentify the drive family: Alpha One Gen I vs. Gen II determines gearcase, seal, and water pump components. The drive model is usually listed on the transom assembly or in your documentation.\u003c\/li\u003e\n    \u003cli\u003eNote fuel\/induction type: carb\/TKS vs. EFI\/MPI. Many service items (filters, ignition parts) depend on the exact induction system.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eEngine Platform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline‑4 2.5L (approx. 120HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInline‑4 4‑stroke, typically carbureted; raw‑water cooled via sterndrive pump.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eMerCruiser 120 packages with Alpha drives (year‑dependent).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eSimple, durable, economical to maintain; strong low‑RPM torque for cruising.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eMany cooling and gearcase parts track to the drive generation (Alpha Gen I vs Gen II); ignition\/fuel parts depend on carb\/TKS hardware.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eInline‑4 3.0L (approx. 140–165HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInline‑4 4‑stroke, carb\/TKS or EFI depending on year; uses sterndrive raw‑water pump.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eMerCruiser 3.0L Alpha packages rated around 140–165HP.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eBroad parts availability, reliable mid‑range pull, straightforward routine service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInduction type (carb vs EFI) and drive generation affect filters, ignition, and water pump components; verify by serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are typical guidelines for MerCruiser 4‑stroke sterndrive packages. Always follow the official service manual and your specific model’s maintenance schedule.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eUse marine‑grade oil meeting MerCruiser specs; replace filter with each oil change.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-oil-filters\"\u003eMerCruiser Oil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInspect for water intrusion (milky oil). Change sooner after impact or contamination.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-service-maintenance-kits\"\u003eMerCruiser Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInspect every 100 hours; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eCheck gap and signs of fouling; torque to spec.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eFuel\/water separator \u0026amp; fuel filter\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eDrain or replace sooner if water or debris is present.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-filters\"\u003eMerCruiser Fuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eWater pump impeller\/kit (drive)\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eEvery 2–3 seasons (or 200 hours)\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eShorten interval for sandy\/silty or high‑temperature use.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-impellers\"\u003eMerCruiser Impellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInspect every 2–3 months; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eMatch anode material to water type (salt, brackish, fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-anodes\"\u003eMerCruiser Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-service-maintenance-kits\"\u003eMerCruiser Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-impellers\"\u003eMerCruiser Impellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-filters\"\u003eMerCruiser Fuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-alternators\"\u003eMerCruiser Alternators\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-anodes\"\u003eMerCruiser Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-propellers\"\u003eMerCruiser Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Sealing — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-gaskets\"\u003eMerCruiser Gaskets\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom: 1px solid #ddd; padding: 6px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eOverheat alarm or rising temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eInspect drive water inlets for blockage; check impeller condition; verify thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eWater pump impeller kit, thermostat, intake screens, cooling hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eCheck fuel quality and water separator; inspect prop for damage\/cavitation; review ignition components.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eFuel filter\/water separator, fuel pump, propeller, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eConfirm choke\/TKS or IAC function; look for vacuum leaks; test battery and connections; verify plug gap.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eSpark plugs, ignition leads, fuel filters, carb rebuild kit\/IAC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eCheck gear oil level\/condition; inspect for water intrusion via prop shaft\/drive seals.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eLower unit seal kit, bearings, gear oil\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eWeak charging or battery not holding\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eVerify belt tension; test alternator output; inspect grounds and battery cables.\u003c\/td\u003e\n        \u003ctd style=\"padding: 6px;\"\u003eAlternator, belt, regulator, battery cables\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome are, but many depend on engine displacement (2.5L vs 3.0L), induction (carb\/TKS vs EFI), and drive generation (Alpha Gen I vs Gen II). Always confirm by serial number before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, every 2–3 seasons or about 200 hours. Replace sooner if you operate in sandy or silty water, see temperature creep at idle, or after any overheat event.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the gear oil?\u003c\/summary\u003e\n    \u003cp\u003eAt least annually or every 100 hours. Change immediately if the oil appears milky, metallic, or after prop strikes and suspected water intrusion.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information is needed to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eEngine serial number, engine displacement (2.5L or 3.0L), fuel\/induction type, and drive generation (Alpha Gen I or Gen II). Photos of the nameplate and the part you’re replacing are also helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width: 1000px; margin: 0 auto; padding: 16px;\"\u003e\n  \u003cp\u003eReady to find the right components? Browse the main MerCruiser collection and use the filters to narrow by horsepower, model year, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display: inline-block; margin: 8px 0; padding: 10px 14px; background: #0b5cab; color: #fff; text-decoration: none; border-radius: 4px;\"\u003eShop MerCruiser Parts\u003c\/a\u003e\n  \u003cp style=\"font-size: 0.95em; color: #333;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"circulation-water-pump-fits-volvo-penta-2-5-3-0-4-0l-replaces-volvo-penta-mercruiser-sierra-mallory-glm","title":"Circulation Water Pump – Fits Volvo Penta 2.5\/3.0\/4.0L (Replaces Volvo Penta, MerCruiser, Sierra, Mallory, GLM)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eCirculation Water Pump\u003c\/strong\u003e provides a direct-fit cooling solution for a range of marine engines, including Volvo Penta 2.5L, 3.0L, and 4.0L models (1990–2017), various MerCruiser 3.0L engines, and select GM-based 2.5L–4.0L OMC engines.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for numerous OEM and aftermarket part numbers, including Volvo Penta 3854017, Sierra 18-3593, MerCruiser 8M0113733, and Mallory 9-42605, ensuring broad compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for direct bolt-on installation.\u003c\/li\u003e\n  \u003cli\u003eFeatures a durable bronze impeller for reliable performance.\u003c\/li\u003e\n  \u003cli\u003eCovered by a 1-year manufacturer warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3854017\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3858340\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3575\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3593\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0113733\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e884727\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e65142A1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-42605\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e15100\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Volvo Penta engines, this pump fits a wide range of 2.5L, 3.0L, and 4.0L models manufactured between 1990 and 2017.\u003c\/p\u003e\n\u003cp\u003eThis pump is compatible with various 3.0L MerCruiser engines. Cross-reference your OEM part number to ensure a match.\u003c\/p\u003e\n\u003cp\u003eFits select OMC engines that use a GM-based 2.5L to 4.0L block. Please verify your OEM part number.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e2.5L\u003c\/td\u003e\n        \u003ctd\u003e120\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2017\u003c\/td\u003e\n        \u003ctd\u003e3854017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e130–140\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2017\u003c\/td\u003e\n        \u003ctd\u003e3854017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e4.0L\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2017\u003c\/td\u003e\n        \u003ctd\u003e3854017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e130–135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e880817, 884727, 65142A1, 8M0113733\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003eVarious GM-based 2.5-4.0L\u003c\/td\u003e\n        \u003ctd\u003e110–165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e0509356, 0986779, 3854017\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCirculation Water Pump\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect bolt-on\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect drive\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eAluminum\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBolt flange\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (JLM Marine)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eBronze impeller (aftermarket versions)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1\u003c\/span\u003e x Circulation Water Pump (3854017)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the vessel's battery before beginning work.\u003c\/li\u003e\n  \u003cli\u003eDrain the engine coolant into a suitable container.\u003c\/li\u003e\n  \u003cli\u003eLoosen the alternator and remove the serpentine belt from the water pump pulley.\u003c\/li\u003e\n  \u003cli\u003eRemove the circulation hoses connected to the pump.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and carefully remove the old water pump from the engine block.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean the gasket mating surface on the engine, removing all old material.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket (not included) and install the new circulation pump. Torque bolts to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eReconnect hoses and reinstall the serpentine belt, adjusting for proper tension.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system with the correct type and amount of coolant.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery. Start the engine and carefully check for any leaks around the pump and hoses.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm this pump fits my specific engine?\u003c\/summary\u003e\n  \u003cp\u003eThe best method is to match your existing part number to one listed in our Part Number Matrix. You can also use the Engine \u0026amp; Model Compatibility table to verify your model and year, but always cross-reference the part number for accuracy.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing circulation water pump?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include the engine overheating at low speeds or idle, visible coolant leaks from the pump's \"weep hole,\" a wobbly or loose pulley, or a grinding\/squealing noise coming from the pump assembly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the advantage of a bronze impeller?\u003c\/summary\u003e\n  \u003cp\u003eThis aftermarket pump features a bronze impeller, which is often considered an upgrade over standard stamped steel or composite impellers. Bronze offers superior corrosion resistance and durability, especially in saltwater environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eAt what point should this part be replaced?\u003c\/summary\u003e\n  \u003cp\u003eCirculation pumps do not have a fixed replacement interval. They are typically replaced when they fail or as part of a comprehensive preventative maintenance overhaul, often recommended every 5–7 years of service.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to purchase a separate gasket for installation?\u003c\/summary\u003e\n  \u003cp\u003eYes, this listing is for the pump only. The required mounting gasket must be purchased separately. Always use a new gasket when replacing a water pump to ensure a proper seal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718260953403,"sku":"21FP002","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Circulation_Water_Pump_for_Volvo_Penta_25_30_40_L___3854017_-_JLM_MARINE-8288302.jpg?v=1762958310"},{"product_id":"v-belt-fits-mercruiser-omc-120-165hp-2-5l-3-0l-replaces-57-65607q-0509302","title":"37-Inch V-Belt for MerCruiser 3.0L Alpha One \u0026 3.0L MPI EC – Replaces 57-65607Q, 57-65607T","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003e37-inch V-belt\u003c\/strong\u003e is designed for specified MerCruiser 3.0L Alpha One and MerCruiser 3.0L MPI EC applications. It is intended for the power-steering belt position where the listed engine, drive, and serial-number conditions apply.\u003c\/p\u003e\n\u003cp\u003eThe belt has an effective length of approximately 37 inches (940 mm) and a 29\/64-inch top width. Confirm the complete engine and serial-number information before ordering.\u003c\/p\u003e\n\u003cp\u003eIt is listed as a replacement for MerCruiser references \u003cstrong\u003e57-65607Q, 57-65607T, 65607T, 57-65607, and 65607\u003c\/strong\u003e. Listed aftermarket references include Sierra \u003cstrong\u003e18-15370\u003c\/strong\u003e, Mallory Marine \u003cstrong\u003e9-55005\u003c\/strong\u003e, and OBR \u003cstrong\u003eMR-624\u003c\/strong\u003e. Johnson\/Evinrude references \u003cstrong\u003e0509302\u003c\/strong\u003e and \u003cstrong\u003e509302\u003c\/strong\u003e are also listed for cross-reference.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle replacement V-belt; not a pulley or belt kit.\u003c\/li\u003e\n  \u003cli\u003e37-inch belt length, approximately 940 mm.\u003c\/li\u003e\n  \u003cli\u003e29\/64-inch top width.\u003c\/li\u003e\n  \u003cli\u003eFor the specified MerCruiser power-steering applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references as a cross-reference aid. Always verify the engine serial number and belt routing for your application.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003cth\u003eBrand or Source\u003c\/th\u003e\n\u003cth\u003eNumber\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e57-65607Q\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e57-65607T\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e65607T\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e57-65607\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e65607\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-15370\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-55005\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003ctd\u003eOBR\u003c\/td\u003e\n\u003ctd\u003eMR-624\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCross-reference\u003c\/td\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e0509302; 509302\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company fitment record specifies the following MerCruiser applications. The model, drive, displacement, and serial-number conditions must be considered together.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEngine \/ Drive\u003c\/th\u003e\n\u003cth\u003eDisplacement\u003c\/th\u003e\n\u003cth\u003eSerial Number Condition\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L Alpha One\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e1A002000–1A020543\u003c\/td\u003e\n        \u003ctd\u003eSpecified power-steering V-belt application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L Alpha One\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e1A020544 and up\u003c\/td\u003e\n        \u003ctd\u003eSpecified power-steering V-belt application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L MPI EC\u003c\/td\u003e\n        \u003ctd\u003e3.0L MPI\u003c\/td\u003e\n        \u003ctd\u003e1A072812 and up\u003c\/td\u003e\n        \u003ctd\u003eSpecified power-steering V-belt application\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e MerCruiser engines can use different belts depending on the engine configuration, belt position, pulley arrangement, and serial number. A 3.0L or Alpha One designation by itself is not sufficient to confirm fitment.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eV-belt\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n  \u003cdd\u003e1 belt\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSpecified MerCruiser power-steering belt position\u003c\/dd\u003e\n  \u003cdt\u003eEffective Length\u003c\/dt\u003e\n  \u003cdd\u003e37 inches (approximately 940 mm)\u003c\/dd\u003e\n  \u003cdt\u003eTop Width\u003c\/dt\u003e\n  \u003cdd\u003e29\/64 inch\u003c\/dd\u003e\n  \u003cdt\u003eProduct Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement component\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e 37-inch V-belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003eConfirm the engine model, drive, serial number, belt position, and pulley arrangement against the compatibility information and service manual.\u003c\/li\u003e\n  \u003cli\u003eRecord the original belt routing before removal.\u003c\/li\u003e\n  \u003cli\u003eRelease belt tension using the adjustment procedure specified for your engine.\u003c\/li\u003e\n  \u003cli\u003eRemove the old belt and inspect the pulleys for damage, misalignment, contamination, or excessive wear.\u003c\/li\u003e\n  \u003cli\u003eInstall the new belt in the correct pulley grooves and follow the original routing.\u003c\/li\u003e\n  \u003cli\u003eSet belt tension according to the applicable MerCruiser service manual; do not rely on a universal tension or deflection value.\u003c\/li\u003e\n  \u003cli\u003eTighten all adjustment and mounting fasteners to the service-manual specification.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, run the engine briefly, and check belt tracking and abnormal noise before returning the boat to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this belt is correct?\u003c\/summary\u003e\n  \u003cp\u003eMatch the old belt’s verified reference number and dimensions, then confirm the complete MerCruiser model, drive, and serial-number range. For this listing, the specified applications are MerCruiser 3.0L Alpha One serial numbers 1A002000–1A020543, 1A020544 and up, and MerCruiser 3.0L MPI EC serial numbers 1A072812 and up.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this a complete belt kit?\u003c\/summary\u003e\n  \u003cp\u003eNo. This product is a single replacement V-belt. It does not include a pulley, tensioner, steering pump, or additional belts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs that a V-belt needs replacement?\u003c\/summary\u003e\n  \u003cp\u003eInspect for cracking, fraying, glazing, missing material, contamination, or abnormal wear. Squealing, belt slip, poor tracking, or visible vibration can also indicate a worn belt or a pulley, alignment, or tension problem.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use this belt on any MerCruiser 3.0L engine?\u003c\/summary\u003e\n  \u003cp\u003eNo. Belt selection can vary by serial number, drive, pulley arrangement, cooling configuration, and belt position. Use the specified fitment conditions rather than displacement alone.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an original MerCruiser-branded part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement belt listed against the referenced MerCruiser numbers and other cross-reference numbers.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes the belt include installation hardware?\u003c\/summary\u003e\n  \u003cp\u003eNo. The box contains one V-belt only. Reuse or replace other hardware only as directed by the applicable service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the engine model, drive, serial number, belt position, routing, and dimensions before purchase and installation.\u003c\/li\u003e\n  \u003cli\u003eDo not install the belt on an application that does not match the specified fitment conditions.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery before working near belts, pulleys, or rotating engine components.\u003c\/li\u003e\n  \u003cli\u003eUse the applicable MerCruiser service manual for tension, torque, and adjustment specifications.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component and is not manufactured or branded by MerCruiser.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply aftermarket components for repair and maintenance of marine engines and drive systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product information is organized around model, serial-number, dimensional, and application details.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Replacement Solutions\u003c\/strong\u003e — Cross-reference information helps customers compare replacement parts while supporting final verification against the original component and service documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718266622267,"sku":"23BL229","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23BL229_1.jpg?v=1762958558"},{"product_id":"exhaust-water-shutter-flapper-fits-mercruiser-2-5l-3-0l-3-7l-engines-replaces-60930-25-43809","title":"Exhaust Water Shutter Flapper Valve for MerCruiser 140, 3.0L, 3.0LX and 4.2L V8 Engines – OEM References 8M0067654, 60930","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap; word-break:normal; letter-spacing:normal;\n    font-weight:600; background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Water Shutter Flapper Valve\u003c\/strong\u003e is a replacement manifold exhaust shutter for selected MerCruiser stern-drive and inboard applications. It is listed for MerCruiser 140, 3.0L, 3.0LX, and V8 TDI 4.2L applications rated at 335 or 370 MCM\/MIE. The shutter helps allow exhaust gases to exit while reducing the risk of water traveling back through the exhaust system toward the engine.\u003c\/p\u003e\n\u003cp\u003eThe company catalog identifies Mercury Marine OEM reference numbers \u003cstrong\u003e8M0067654\u003c\/strong\u003e and \u003cstrong\u003e60930\u003c\/strong\u003e. Additional aftermarket reference numbers listed for comparison are Sierra Marine \u003cstrong\u003e18-2727\u003c\/strong\u003e, Mallory Marine \u003cstrong\u003e9-42800\u003c\/strong\u003e, and GLM \u003cstrong\u003e89165\u003c\/strong\u003e. Reference numbers and engine details should be checked against the original part and the engine identification before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement exhaust water shutter\/flapper valve.\u003c\/li\u003e\n  \u003cli\u003eFor the MerCruiser applications listed below.\u003c\/li\u003e\n  \u003cli\u003eSold as one shutter valve; grommets and other installation hardware are not specified as included in the company package information.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement part; not a Mercury Marine OEM-manufactured component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer and aftermarket reference numbers to compare the replacement with the part being removed. A number match alone does not replace verification of the complete engine and drive application.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eBrand or Reference Type\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Marine OEM reference\u003c\/td\u003e\n\u003ctd\u003e8M0067654\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Marine OEM reference\u003c\/td\u003e\n\u003ctd\u003e60930\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra Marine aftermarket reference\u003c\/td\u003e\n\u003ctd\u003e18-2727\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory Marine aftermarket reference\u003c\/td\u003e\n\u003ctd\u003e9-42800\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGLM aftermarket reference\u003c\/td\u003e\n\u003ctd\u003e89165\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company fitment record lists the following MerCruiser applications. Keep the model, horsepower, engine configuration, and MCM\/MIE designation together when checking fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eEngine or Model\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eDrive or Application\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eMCM\/MIE application listed by the company\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e3.0L\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eStern\/out-drive application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e3.0LX\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003eStern\/out-drive application\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eV8 TDI 4.2L\u003c\/td\u003e\n\u003ctd\u003e335 or 370\u003c\/td\u003e\n\u003ctd\u003eV8 TDI\u003c\/td\u003e\n\u003ctd\u003eMCM\/MIE application\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eYear ranges, serial-number ranges, shaft dimensions, and stroke information are not specified in the company fitment record. Do not extend the fitment to other engine models solely because the shutter looks similar.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eManifold exhaust water shutter flapper valve\u003c\/dd\u003e\n  \u003cdt\u003eBrand or Application\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser stern\/out-drive and listed MCM\/MIE applications\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference Numbers\u003c\/dt\u003e\n  \u003cdd\u003e8M0067654 and 60930\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference Numbers\u003c\/dt\u003e\n  \u003cdd\u003eSierra Marine 18-2727; Mallory Marine 9-42800; GLM 89165\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement installation; confirm the original shutter orientation before removal\u003c\/dd\u003e\n  \u003cdt\u003eIncluded Hardware\u003c\/dt\u003e\n  \u003cdd\u003eNot specified in the company package information\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Exhaust water shutter flapper valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGrommets, clamps, hoses, and other installation hardware are not listed as included. Reuse only hardware that is in serviceable condition and appropriate for the application.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eMake sure the engine is switched off and completely cool. Follow the boat manufacturer's safety procedures and disconnect the battery when appropriate.\u003c\/li\u003e\n  \u003cli\u003eLocate the exhaust manifold or exhaust outlet area where the existing water shutter is installed. Remove surrounding hoses or components only as necessary for access.\u003c\/li\u003e\n  \u003cli\u003eBefore removing the old shutter, note its position and opening direction.\u003c\/li\u003e\n  \u003cli\u003eRemove the old shutter and inspect the surrounding exhaust passage, mounting surfaces, and any retaining hardware for damage or excessive corrosion.\u003c\/li\u003e\n  \u003cli\u003eClean the seating area and compare the replacement with the removed part and the applicable OEM reference number.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement shutter in the same orientation as the original, allowing exhaust flow while positioning the shutter to help limit water backflow.\u003c\/li\u003e\n  \u003cli\u003eReassemble all removed exhaust components according to the manufacturer's service procedure. Check for leaks and abnormal noise during the initial run test.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eBecause installation access and retaining arrangements vary by engine and drive configuration, consult the applicable MerCruiser service information or use a qualified marine technician when necessary.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat does an exhaust water shutter do?\u003c\/summary\u003e\n  \u003cp\u003eThe shutter is positioned in the exhaust system to permit exhaust gases to pass while helping reduce water backflow toward the engine. A damaged or missing shutter can increase the risk of water entering areas where it may cause engine damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs that the shutter needs inspection?\u003c\/summary\u003e\n  \u003cp\u003ePossible signs include rattling from the exhaust area, a damaged or deteriorated shutter found during inspection, abnormal exhaust noise, or evidence of water intrusion. Diagnose the complete exhaust system before replacing parts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this product include grommets?\u003c\/summary\u003e\n  \u003cp\u003eNo grommets are specified in the company package information for this product. The package is one exhaust water shutter flapper valve. Verify the condition and availability of any separate retaining or sealing hardware before beginning installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this fit a MerCruiser 2.5L or 3.7L engine?\u003c\/summary\u003e\n  \u003cp\u003eThose applications are not listed in the company fitment record for this product. The listed applications are MerCruiser 140, 3.0L, 3.0LX, and V8 TDI 4.2L engines rated at 335 or 370 MCM\/MIE. Confirm your engine model and original part number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Mercury Marine part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement. The Mercury Marine numbers 8M0067654 and 60930 are shown as OEM reference numbers for comparison.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the exhaust shutter be inspected?\u003c\/summary\u003e\n  \u003cp\u003eInspection intervals depend on engine use, storage, exhaust temperature, and water conditions. Inspect it whenever the related exhaust components are serviced and replace it if it is cracked, hardened, distorted, loose, or otherwise damaged.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the shipping and return terms?\u003c\/summary\u003e\n  \u003cp\u003eShipping speed, shipping cost, warranty coverage, and return eligibility are determined by the store's current policies and checkout information.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the engine model, horsepower, configuration, drive or MCM\/MIE designation, and original part number before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on a similar appearance or a single cross-reference number to confirm fitment.\u003c\/li\u003e\n  \u003cli\u003eAllow the engine and exhaust system to cool fully before inspection or installation.\u003c\/li\u003e\n  \u003cli\u003eFollow the applicable MerCruiser service procedure. Professional marine installation is recommended when access, exhaust removal, or water-ingestion diagnosis is involved.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not a Mercury Marine OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide replacement components for marine service and repair applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and listed fitment are provided to help customers compare parts before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Parts Identification\u003c\/strong\u003e — When fitment is uncertain, compare the original component and complete engine identification before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718266720571,"sku":"17ST001","price":16.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Exhaust_Flapper_Water_Shutter_with_Grommets_for_MerCruiser_25L_30L_37L____60930_-_JLM_MARINE-8287148.jpg?v=1762958561"}],"url":"https:\/\/seasierra.com\/collections\/mercruiser-4-stroke-120-165hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}