{"title":"Mercury 2-Stroke 30-40HP Outboard Engine Components","description":"\u003csection id=\"hero\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto 20px auto;\"\u003e\n  \u003cp\u003eThis page is tailored for Mercury 2-Stroke 30–40HP outboard engines. Use it to quickly find compatible components and service information, including maintenance schedules, common replacement parts, and troubleshooting tips. You can also browse the main Mercury collection for a wider range of parts. Scroll to the bottom of this page to start browsing parts for this engine, and remember you can use the collection’s “Filter \u0026amp; Sort” controls to narrow by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;padding:10px 16px;background:#0f766e;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse All Mercury Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:1000px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eHow to Identify Your 30–40HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/nameplate tag on the transom clamp bracket or swivel bracket. Record the full serial number and any model suffixes.\u003c\/li\u003e\n    \u003cli\u003eModel code\/suffix basics: letters often indicate start type and controls (e.g., electric start vs. manual, tiller vs. remote) and shaft length (short\/long). Confirm these options before ordering.\u003c\/li\u003e\n    \u003cli\u003ePlatform cues: these 30–40HP 2‑stroke models are typically twin‑cylinder, carbureted engines. Some 40HP variants share many parts with the 30HP twin; verify jetting and timing specs by serial.\u003c\/li\u003e\n    \u003cli\u003eIf your serial begins around the 1B0… range (mid‑2000s), you’re likely in the later twin‑cylinder family noted below; always confirm with the plate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:1000px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eEngine\/Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eMercury 30–40HP Twin‑Cylinder 2‑Stroke (Carbureted)\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 #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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 #f1f5f9;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e2‑cylinder, loop‑charged, carbureted 2‑stroke; manual or electric start; tiller or remote; typical gear ratio ~2.00:1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e30HP (2‑CYL) and 40HP (2‑CYL) family; examples around serial 1B0… (mid‑2000s). SeaPro\/Marathon commercial variants exist.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eLightweight package with strong holeshot; straightforward carburetor tuning and routine service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMany service parts interchange between 30HP and 40HP twins. Carburetor jets, timing, and some control pieces can differ—verify by serial and model options (shaft length, trim, controls).\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 24px auto;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for typical recreational use. Always follow the official Mercury service manual for your exact 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 #e5e7eb;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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 #f1f5f9;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect magnet for metal; replace seals if water intrusion is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower 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 #f1f5f9;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace ~100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eUse the correct heat range and gap per manual; fouling can indicate rich mixture or excessive oil.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eFuel filter \/ inline filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eEvery 100 hours or each season\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eReplace more frequently with ethanol fuel or dirty tanks; check primer bulb and lines for cracks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\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 #f1f5f9;\"\u003eWater pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect annually; replace every 2–3 seasons (or sooner in sandy\/silty water)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eWeak telltale or overheat alarms often trace to a worn impeller or scored pump plate.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours\/90 days; replace when 50% gone\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eUse alloy suited to your water (fresh, brackish, or salt). Ensure bonding is clean and tight.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect annually; replace ~2 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eStuck thermostats affect warm‑up and cooling; replace gasket when serviced.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003e2‑Stroke oil \/ oil injection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck every outing; service annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse NMMA TC‑W3 certified oil. If premix, typical ratio is 50:1 unless otherwise specified. For oil‑injected models, inspect tank, lines, and pump calibration.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\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 24px auto;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service \u0026amp; Tune‑Up: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System (impellers, kits): \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System (filters, hoses): \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical (coils, switches): \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Sealing (driveshaft\/shift seals): \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hardware: \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\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:1000px;margin:0 auto 24px auto;\"\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 #e5e7eb;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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 #f1f5f9;\"\u003eWeak telltale \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eDebris in intake screens, pinched water tube, worn impeller, stuck thermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eWater pump kit, face plate \u0026amp; gaskets, thermostat\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eOld fuel, clogged filter, fouled plugs, carb out of adjustment, low compression\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eFuel filter, spark plugs, carburetor service parts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003ePrimer bulb condition, choke\/enricher operation, air leaks in fuel line, ignition timing\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eFuel line\/primer bulb, choke\/enricher parts, ignition components\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eOil ratio too rich, cold running (thermostat), stuck choke, low‑quality or old oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eThermostat, choke components, plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise \/ milky gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater intrusion from worn seals, damaged prop shaft seal from fishing line, low gear oil level\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, prop shaft seal, drain\/fill plug seals\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 24px auto;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between 30HP and 40HP twin‑cylinder 2‑stroke models?\u003c\/summary\u003e\n    \u003cp\u003eMany service items (water pump, gearcase seals, some ignition and hardware) overlap, but carburetor components, jetting, and certain controls can vary. Always confirm with your serial number and model options.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually and replace every 2–3 seasons for typical use. In sandy, silty, or high‑heat operation, replace more frequently or at the first sign of weak telltale or elevated temperature.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange every 100 hours or once per season. If the oil appears milky, metallic, or burnt, service the gearcase immediately and replace suspect seals.\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 engine’s serial number, full model code and suffix, shaft length, start type (manual\/electric), and whether it’s tiller or remote control. Photos of the nameplate and the part needing replacement are very helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto;\"\u003e\n  \u003cp\u003eReady to find the right components for your Mercury 2‑Stroke 30–40HP? Browse the main collection by horsepower, year, and model to locate compatible parts.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;margin-top:8px;padding:10px 16px;background:#0f766e;color:#fff;text-decoration:none;border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#475569;\"\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-130-f-54-c-fits-mercury-mariner-chrysler-force-replaces-895338-f97068-2","title":"130°F Thermostat for Mercury\/Mariner and Chrysler\/Force Outboards – Replaces 895338, F97068-2","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\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\u003csection\u003e\n    \u003ch2\u003eProduct Details\u003c\/h2\u003e\n    \u003cp\u003eThis aftermarket \u003cstrong\u003e130°F (54°C) thermostat\u003c\/strong\u003e is intended for selected Mercury\/Mariner and Chrysler\/Force outboard applications. The company catalog identifies the product for 25–55 HP applications and lists Mercury\/Mariner 30–40 HP applications. It is supplied as a single thermostat, not as a multi-piece thermostat kit.\u003c\/p\u003e\n    \u003cp\u003eThe thermostat is identified as a 3\/4-inch, 130-degree unit. It provides a replacement option for Mercury Marine reference \u003cstrong\u003e895338\u003c\/strong\u003e and Chrysler\/Force reference \u003cstrong\u003eF97068-2\u003c\/strong\u003e. Confirm the exact engine model, serial number, thermostat temperature specification, and original part before ordering.\u003c\/p\u003e\n    \u003cul\u003e\n        \u003cli\u003e130°F (54°C) operating temperature rating.\u003c\/li\u003e\n        \u003cli\u003e3\/4-inch thermostat application reference.\u003c\/li\u003e\n        \u003cli\u003eSingle thermostat replacement for selected outboard cooling systems.\u003c\/li\u003e\n        \u003cli\u003eCustomer-facing reference numbers are listed below for identification and cross-reference purposes.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n    \u003cp\u003eThese manufacturer and aftermarket references are provided to help compare the replacement part. A cross-reference is not a substitute for checking the complete engine fitment.\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\u003c\/td\u003e\n                    \u003ctd\u003e895338\u003c\/td\u003e\n                    \u003ctd\u003eOEM reference\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n                    \u003ctd\u003eF97068-2\u003c\/td\u003e\n                    \u003ctd\u003eOEM reference listed for the 130°F thermostat application\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n                    \u003ctd\u003eF97068, F97068-1\u003c\/td\u003e\n                    \u003ctd\u003eAdditional company-listed reference formats\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eSierra Marine\u003c\/td\u003e\n                    \u003ctd\u003e18-3556\u003c\/td\u003e\n                    \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eMallory Marine\u003c\/td\u003e\n                    \u003ctd\u003e9-43025\u003c\/td\u003e\n                    \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eGLM\u003c\/td\u003e\n                    \u003ctd\u003e13200\u003c\/td\u003e\n                    \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n    \u003cp\u003eThe company catalog lists this thermostat for Mercury\/Mariner applications in 30–40 HP and for Chrysler\/Force applications in 25, 35, 40, 45, 50, and 55 HP. The available records do not establish one universal year range, stroke designation, or serial-number range for every listed horsepower. Use the detailed engine information below as a starting point and verify the exact application before purchase.\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\u003eHorsepower\u003c\/th\u003e\n                    \u003cth\u003eApplication Scope\u003c\/th\u003e\n                    \u003cth\u003eTemperature\u003c\/th\u003e\n                    \u003cth\u003eReference\u003c\/th\u003e\n                    \u003cth\u003eFitment Note\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n                    \u003ctd\u003e30–40 HP\u003c\/td\u003e\n                    \u003ctd\u003eSelected outboard applications\u003c\/td\u003e\n                    \u003ctd\u003e130°F (54°C)\u003c\/td\u003e\n                    \u003ctd\u003e895338\u003c\/td\u003e\n                    \u003ctd\u003eCheck the exact model and serial number; some catalog entries using the same reference show different temperature specifications by serial range.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n                    \u003ctd\u003e25, 35, 40, 45, 50, 55 HP\u003c\/td\u003e\n                    \u003ctd\u003eSelected outboard applications\u003c\/td\u003e\n                    \u003ctd\u003e130°F (54°C)\u003c\/td\u003e\n                    \u003ctd\u003eF97068-2\u003c\/td\u003e\n                    \u003ctd\u003eVerify the original thermostat size, temperature rating, and engine identification information.\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 Horsepower alone does not confirm fitment. Before ordering, compare your engine brand, model designation, serial number, original thermostat, and service-manual specification with this listing.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\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\u003eTemperature Rating\u003c\/dt\u003e\n        \u003cdd\u003e130°F (54°C)\u003c\/dd\u003e\n        \u003cdt\u003eApplication Size Reference\u003c\/dt\u003e\n        \u003cdd\u003e3\/4 inch\u003c\/dd\u003e\n        \u003cdt\u003eApplication\u003c\/dt\u003e\n        \u003cdd\u003eSelected Mercury\/Mariner and Chrysler\/Force outboard cooling systems\u003c\/dd\u003e\n        \u003cdt\u003eInstallation\u003c\/dt\u003e\n        \u003cdd\u003eReplacement installation in the original thermostat location\u003c\/dd\u003e\n        \u003cdt\u003eQuantity\u003c\/dt\u003e\n        \u003cdd\u003eOne thermostat\u003c\/dd\u003e\n        \u003cdt\u003eBrand Status\u003c\/dt\u003e\n        \u003cdd\u003eAftermarket replacement; not an OEM-branded component\u003c\/dd\u003e\n    \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e1 × 130°F (54°C) thermostat\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eAdditional gaskets, seals, housing components, or installation hardware are not identified in the company package information. Do not assume they are included.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n    \u003col\u003e\n        \u003cli\u003eConfirm the engine model, serial number, original thermostat specification, and temperature rating before beginning work.\u003c\/li\u003e\n        \u003cli\u003eAllow the engine to cool completely and follow the engine manufacturer's safety procedures.\u003c\/li\u003e\n        \u003cli\u003eRemove the thermostat housing according to the applicable service manual.\u003c\/li\u003e\n        \u003cli\u003eRemove the old thermostat and inspect the housing, sealing surfaces, and related cooling-system components for damage or deposits.\u003c\/li\u003e\n        \u003cli\u003eClean the mating surfaces without scratching or distorting the housing.\u003c\/li\u003e\n        \u003cli\u003eInstall the replacement thermostat in the correct orientation. Use the gasket or seal specified by the engine manufacturer; replacement sealing components are not identified as included with this product.\u003c\/li\u003e\n        \u003cli\u003eReinstall the housing and tighten the fasteners to the manufacturer's specified torque.\u003c\/li\u003e\n        \u003cli\u003eRestore the cooling system as required by the engine service procedure.\u003c\/li\u003e\n        \u003cli\u003eRun the engine using the manufacturer's approved procedure and check for leaks, correct water flow, and abnormal temperature indications.\u003c\/li\u003e\n    \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eHow do I know if this thermostat fits my engine?\u003c\/summary\u003e\n        \u003cp\u003eStart with the engine brand, model, horsepower, and serial number, then compare the original thermostat's temperature rating and size. This listing is associated with selected Mercury\/Mariner 30–40 HP applications and Chrysler\/Force 25–55 HP applications. Because fitment can vary by model and serial range, horsepower alone is not sufficient.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eWhat temperature is this thermostat rated for?\u003c\/summary\u003e\n        \u003cp\u003eThis product is cataloged as a 130°F (54°C) thermostat. Do not substitute it for a 143°F or another temperature-rated thermostat unless the engine manufacturer's specification confirms that substitution.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eWhich reference numbers does this thermostat replace?\u003c\/summary\u003e\n        \u003cp\u003eThe company catalog lists Mercury Marine 895338 and Chrysler\/Force F97068-2 as primary references. Additional listed references include Sierra Marine 18-3556, Mallory Marine 9-43025, and GLM 13200. Always verify the complete application and temperature specification.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eDoes the package include a gasket or seal?\u003c\/summary\u003e\n        \u003cp\u003eThe company package information identifies one thermostat and does not identify a separate gasket or seal as included. Obtain the sealing component specified for your engine if your service procedure requires one.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eWhat are common signs of a thermostat problem?\u003c\/summary\u003e\n        \u003cp\u003eA thermostat that is stuck open may allow the engine to run too cool, while one that is stuck closed can contribute to overheating. Temperature alarms, abnormal temperature readings, poor warm-up behavior, or inconsistent cooling-system performance should be diagnosed using the engine manufacturer's service procedure.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eIs this an OEM thermostat?\u003c\/summary\u003e\n        \u003cp\u003eNo. This listing is for an aftermarket replacement. The OEM and aftermarket numbers shown on this page are reference numbers used for identification and fitment comparison.\u003c\/p\u003e\n    \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003eNever remove the thermostat housing while the engine or cooling system is hot.\u003c\/li\u003e\n        \u003cli\u003eVerify the temperature rating, size, model, and serial-number conditions before ordering.\u003c\/li\u003e\n        \u003cli\u003eDo not rely on horsepower alone to confirm compatibility.\u003c\/li\u003e\n        \u003cli\u003eFollow the applicable service manual for installation, torque, sealing, coolant, and testing procedures.\u003c\/li\u003e\n        \u003cli\u003eProfessional installation is recommended if the correct procedure or application is uncertain.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical replacement components for selected marine-engine applications.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Reference numbers and fitment information are provided to support proper part comparison.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Contact support with your engine brand, model, horsepower, and serial number when application details need to be confirmed.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723806871867,"sku":"23TH608","price":24.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Thermostat_for_Mercury_Mariner_30_40HP_2_Cylinder_Outboard_Engine_895338___895338_-_JLM_MARINE-8291393.jpg?v=1763032280"}],"url":"https:\/\/seasierra.com\/collections\/mercury-2-stroke-30-40hp-outboard-engine-components.oembed","provider":"SeaSierra","version":"1.0","type":"link"}