{"title":"Cummins 4-Stroke 115-170HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003cp\u003eBuilt for Cummins 4-Stroke 115–170HP outboard engines, this page helps you find compatible parts and service information. Below you’ll find maintenance tips, common replacement part categories, and troubleshooting guidance. You can also browse our main Cummins parts collections, and at the bottom of this page you can start browsing parts for this engine. On the collection pages, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0b66c3;border-radius:6px;text-decoration:none;color:#0b66c3;\"\u003eBrowse All Cummins Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 115–170HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFind the nameplate\/serial plate on the transom bracket or engine swivel bracket; some models also have a sticker on the cylinder block or mid‑section.\u003c\/li\u003e\n    \u003cli\u003eRecord the full model code and serial number. Suffix letters often indicate shaft length, starting method, control type (tiller\/remote), and revision level.\u003c\/li\u003e\n    \u003cli\u003eConfirm it’s a 4‑stroke platform. 4‑stroke outboards have an engine oil dipstick and oil filter; service intervals include oil and filter changes.\u003c\/li\u003e\n    \u003cli\u003eNote gearcase details (standard vs high‑thrust), which can affect propeller fit, seal kits, and water pump components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline‑4 EFI 4‑Stroke (approx. 115–150 HP class)\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:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInline‑4, EFI 4‑stroke, DOHC\/SOHC depending on model year; designed for general‑purpose cruising and fishing.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eTypical 115–150 HP 4‑stroke outboard variants with remote or tiller controls and multiple shaft lengths.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eBalanced weight, good fuel economy, broad mid‑range torque, straightforward maintenance.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePropeller spline\/count and gear ratio vary by gearcase; verify serial\/model code when selecting water pump kits and seal kits.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV6 EFI 4‑Stroke (approx. 150–170 HP class)\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:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eV6, EFI 4‑stroke; tuned for higher output with smooth operation and strong holeshot.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eTypical 150–170 HP 4‑stroke outboard variants including offshore and high‑thrust options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHigher peak power, smoothness at cruise, and robust charging output for electronics.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump, anode sets, and prop hubs can differ from inline‑4 models—always match by serial\/model code.\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:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 4‑stroke outboards. Always follow the official service manual for your specific model and operating conditions.\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:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse marine‑grade FC‑W oil; replace filter every oil change.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect for water intrusion and metal; replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e300 hours or 3 years (inspect sooner)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGap to spec; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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:8px;border-bottom:1px solid #eee;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eDrain water separator periodically; replace filters to prevent injector wear.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e2 seasons or 200 hours (inspect annually)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCritical for cooling; replace sooner if sand\/silt use or weak telltale.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eImpeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAnodes (internal \u0026amp; external)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect every 50 hours; replace when 50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eChoose zinc, aluminum, or magnesium based on water type.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\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:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service — \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System — \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical — \u003ca href=\"https:\/\/seasierra.com\/collections\/rectifiers\"\u003eRectifiers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion \/ Lower Unit — \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:980px;margin:0 auto;padding:16px 12px;\"\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:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWeak telltale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect intake screens, confirm strong telltale, test thermostat, and review recent impeller service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump kit, impeller, thermostat, gaskets, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck battery voltage, spark quality, fuel freshness, and replace clogged filters.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs, fuel filter, rectifier\/regulator, hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eVerify prop condition\/pitch, inspect for fuel restriction, and perform compression\/leak‑down if needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePropeller, fuel pump, fuel filters, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck oil level\/condition and for water intrusion; pressure\/vacuum test if contamination is present.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLower unit seal kit, bearings, shims, gear lube\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:980px;margin:0 auto;padding:16px 12px;\"\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 routine items may overlap, but many components vary by serial\/model code, gearcase, and platform (inline‑4 vs V6). Always verify with your exact model identification 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\u003eInspect annually and replace every 2 seasons or ~200 hours. In sandy, silty, or shallow environments, replace more frequently to prevent overheating and pump housing damage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eAt least every 100 hours or annually. If the oil appears milky, smells burnt, or contains metal, address seal or gear wear issues before further use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the full model code, serial number, shaft length, control type (tiller\/remote), and any gearcase details (standard vs high‑thrust). Photos of the nameplate and the part being replaced are also helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width:980px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003cp\u003eReady to find the right components? Browse our main Cummins parts collections and narrow by horsepower, year, and model using Filter \u0026amp; Sort.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;margin-top:8px;padding:10px 14px;border:1px solid #0b66c3;border-radius:6px;text-decoration:none;color:#0b66c3;\"\u003eStart Browsing Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#555;\"\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":"thermostat-fits-mercury-mercruiser-cummins-mercruiser-2-0l-diesel-engines-115-170-hp-replaces-879150054","title":"Thermostat for MerCruiser Stern Drive 2.0L Engines, 115–170 HP, 181°F (83°C) – Replaces 879150054","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;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    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 replacement \u003cstrong\u003ethermostat\u003c\/strong\u003e is intended for MerCruiser stern-drive applications using 2.0L engines rated from 115 to 170 HP. It is specified for an operating temperature of \u003cstrong\u003e181°F (83°C)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe thermostat replaces or cross-references manufacturer part number \u003cstrong\u003e879150054\u003c\/strong\u003e. Confirm the application and part number against your engine and original thermostat before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement thermostat for MerCruiser stern-drive applications.\u003c\/li\u003e\n  \u003cli\u003eFor 2.0L engines rated 115–170 HP.\u003c\/li\u003e\n  \u003cli\u003e181°F (83°C) temperature specification.\u003c\/li\u003e\n  \u003cli\u003eSold as an individual thermostat, not a multi-part kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following reference to compare the thermostat with the corresponding manufacturer number.\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\u003eReference 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\u003eMerCruiser manufacturer reference\u003c\/td\u003e\n        \u003ctd\u003e879150054\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 information identifies this thermostat for \u003cstrong\u003eMerCruiser stern-drive 2.0L engines rated from 115 to 170 HP\u003c\/strong\u003e. The available information does not establish a complete model-year, serial-number, or individual engine-model list.\u003c\/p\u003e\n\u003cp\u003eAlways compare the original thermostat, manufacturer part number, engine configuration, and service-manual requirements before installation. Horsepower range alone may not confirm fitment for every engine variant.\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 \/ Application\u003c\/th\u003e\n        \u003cth\u003eEngine Displacement\u003c\/th\u003e\n        \u003cth\u003eRated Horsepower\u003c\/th\u003e\n        \u003cth\u003eApplication Type\u003c\/th\u003e\n        \u003cth\u003eTemperature\u003c\/th\u003e\n        \u003cth\u003eReference Part No.\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\u003e2.0L\u003c\/td\u003e\n        \u003ctd\u003e115–170 HP\u003c\/td\u003e\n        \u003ctd\u003eStern drive \/ outdrive\u003c\/td\u003e\n        \u003ctd\u003e181°F (83°C)\u003c\/td\u003e\n        \u003ctd\u003e879150054\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\u003eThermostat\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser stern drive \/ outdrive\u003c\/dd\u003e\n  \u003cdt\u003eEngine Displacement\u003c\/dt\u003e\n  \u003cdd\u003e2.0L\u003c\/dd\u003e\n  \u003cdt\u003eRated Horsepower\u003c\/dt\u003e\n  \u003cdd\u003e115–170 HP\u003c\/dd\u003e\n  \u003cdt\u003eTemperature Specification\u003c\/dt\u003e\n  \u003cdd\u003e181°F (83°C)\u003c\/dd\u003e\n  \u003cdt\u003eManufacturer Reference\u003c\/dt\u003e\n  \u003cdd\u003e879150054\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThermostat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis listing is for the individual thermostat. A housing gasket, seal, fasteners, or other installation components are not identified as included.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eAllow the engine to cool completely before beginning work.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and follow the safety procedures in the engine service manual.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing and place a suitable container beneath the area before opening the cooling system.\u003c\/li\u003e\n  \u003cli\u003eDrain coolant as required to prevent spillage when the housing is opened.\u003c\/li\u003e\n  \u003cli\u003eRemove the housing cover carefully and note the orientation of the existing thermostat.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces and inspect the housing, sealing surfaces, and related components for damage or corrosion.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement thermostat in the orientation specified by the engine service manual.\u003c\/li\u003e\n  \u003cli\u003eReplace the housing gasket or seal if required; a gasket is not identified as included with this thermostat.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing and tighten fasteners to the manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eRefill and bleed the cooling system according to the service procedure, then run the engine and check operating temperature and coolant leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat engines is this thermostat intended for?\u003c\/summary\u003e\u003cp\u003eThe listed application is MerCruiser stern-drive or outdrive 2.0L engines rated from 115 to 170 HP. Confirm the exact engine model, serial range, and original part number before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat temperature is this thermostat?\u003c\/summary\u003e\u003cp\u003eThe specified temperature is 181°F (83°C).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat part number does this thermostat replace?\u003c\/summary\u003e\u003cp\u003eThis thermostat is listed as a replacement for manufacturer part number 879150054.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a complete thermostat kit?\u003c\/summary\u003e\u003cp\u003eNo. The company product record identifies this product as an individual thermostat rather than a multi-part kit. A gasket, seal, housing, or other installation hardware is not identified as included.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare the number on your original thermostat with 879150054 and verify the 2.0L, 115–170 HP stern-drive application. If the model-year or serial-number information differs, consult the engine service manual or a qualified marine technician.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of thermostat problems?\u003c\/summary\u003e\u003cp\u003ePossible symptoms include overheating, failure to reach normal operating temperature, unstable temperature readings, or cooling-system problems. Diagnose the complete cooling system before replacing the thermostat.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWork only on a completely cool engine and follow the manufacturer's service procedures.\u003c\/li\u003e\n  \u003cli\u003eVerify the engine model, serial range, displacement, horsepower, and manufacturer reference number before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not assume that a 2.0L engine or horsepower rating alone confirms fitment.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the cooling system or engine service procedure is unfamiliar.\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 Parts Support\u003c\/strong\u003e — We supply 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 fitment information are provided to help customers compare parts before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Assistance\u003c\/strong\u003e — If you need help confirming an application, provide your engine model, serial information, and original part number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718264525115,"sku":"22TH039","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Thermostat_for_Mercury_Mercruiser_Quicksilver_TowSports_20L_115-170_HP____879150054_-_JLM_MARINE-8291051.jpg?v=1762958475"},{"product_id":"air-filter-fits-mercruiser-cummins-2-0l-qsd-replaces-35-879172143-41132038f","title":"Air Filter for MerCruiser \/ Cummins 2.0L QSD Diesel Engines – Replaces Mercury 35-879172143","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;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    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 replacement \u003cstrong\u003eair filter element\u003c\/strong\u003e is designed for Mercury Diesel and MerCruiser 2.0L QSD engine applications. It helps keep airborne dust and debris out of the engine air intake for clean airflow and dependable diesel-engine operation.\u003c\/p\u003e\n\u003cp\u003eThe filter is a direct replacement for Mercury Marine OEM part number \u003cstrong\u003e35-879172143\u003c\/strong\u003e. It is supplied as one individual air filter element, not as a multi-part service kit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement air filter element for Mercury Diesel 2.0L and 2.0L QSD applications.\u003c\/li\u003e\n  \u003cli\u003eDirect-replacement design for the original filter element.\u003c\/li\u003e\n  \u003cli\u003eSuitable for MerCruiser stern-drive and related marine diesel applications where the listed OEM number is specified.\u003c\/li\u003e\n  \u003cli\u003eConfirm the engine model and OEM reference before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following manufacturer reference to help confirm that this replacement is the correct filter 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\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine \/ MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\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 available application information identifies this filter for Mercury Diesel \/ CMD QSD 2.0 engines in the following power ratings. Always compare the engine identification label and the old filter reference before installation.\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 \/ Family\u003c\/th\u003e\n        \u003cth\u003eEngine Model\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eEngine Type\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 EI 115\u003c\/td\u003e\n        \u003ctd\u003e115\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 EI 130\u003c\/td\u003e\n        \u003ctd\u003e130\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 EI 150\u003c\/td\u003e\n        \u003ctd\u003e150\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 EI 170\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 ES 130\u003c\/td\u003e\n        \u003ctd\u003e130\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 ES 150\u003c\/td\u003e\n        \u003ctd\u003e150\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser \/ CMD\u003c\/td\u003e\n        \u003ctd\u003eQSD 2.0 ES 170\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003eDiesel\u003c\/td\u003e\n        \u003ctd\u003e35-879172143\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\u003eAir filter element\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMercury Diesel 2.0L and 2.0L QSD marine diesel engines\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n  \u003cdd\u003eDiesel\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003eMercury Marine \/ MerCruiser 35-879172143\u003c\/dd\u003e\n  \u003cdt\u003ePackage Type\u003c\/dt\u003e\n  \u003cdd\u003eSingle replacement filter element\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 replacement air filter element\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn the engine off and allow it to cool before servicing the air intake.\u003c\/li\u003e\n  \u003cli\u003eLocate the air filter housing and remove the retaining clips, fasteners, or cover as applicable to your engine.\u003c\/li\u003e\n  \u003cli\u003eRemove the old filter element and note its orientation before disposal.\u003c\/li\u003e\n  \u003cli\u003eClean loose dust and debris from inside the housing using a suitable clean, dry method. Do not allow debris to enter the intake passage.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement filter in the same orientation as the removed element.\u003c\/li\u003e\n  \u003cli\u003eCheck that the element is seated evenly and that the housing cover closes securely without pinching the filter.\u003c\/li\u003e\n  \u003cli\u003eReinstall all clips or fasteners, then inspect the intake connection before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eMaintenance \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this air filter fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eCompare your engine model with the QSD 2.0 applications listed above and verify that your existing filter or service information identifies Mercury OEM reference 35-879172143. If the model or reference does not match, confirm fitment with a qualified marine technician before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a restricted air filter?\u003c\/summary\u003e\n  \u003cp\u003ePossible signs include reduced engine performance, sluggish acceleration, increased exhaust smoke, or unusual intake restriction. Inspection and replacement should follow the engine manufacturer’s service recommendations and the operating conditions of the vessel.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the filter be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplacement intervals vary with engine hours, dust exposure, salt-air conditions, and the manufacturer’s maintenance schedule. Inspect the filter regularly and replace it when it is dirty, damaged, damp, or otherwise unable to provide clean airflow.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan this filter be washed or reused?\u003c\/summary\u003e\n  \u003cp\u003eUnless the engine manufacturer specifically identifies the original element as washable and reusable, treat this replacement filter as a replaceable service element. Do not use solvents, compressed air, or cleaning methods that could damage the filter media or force debris into the intake.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Mercury part?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is for a replacement air filter element. Mercury OEM reference 35-879172143 is provided solely to help identify the application; the replacement is not represented as a genuine Mercury-branded component.\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 and OEM reference before purchase and installation.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine with the air filter element or housing improperly installed.\u003c\/li\u003e\n  \u003cli\u003eKeep dirt and loose material from entering the engine intake during service.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the correct application or installation procedure is uncertain.\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 replacement components for a range of marine engine and stern-drive applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and compatibility information are provided to help customers compare the correct service part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Service Support\u003c\/strong\u003e — Confirming the engine model and original part reference before ordering helps ensure the best possible fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718264557883,"sku":"23AF270","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23AF270_1.jpg?v=1762958477"}],"url":"https:\/\/seasierra.com\/collections\/cummins-4-stroke-115-170hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}