{"title":"Mercury Mariner 100HP 2-Stroke Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px; max-width:1100px;\"\u003e\n  \u003cp\u003e\n    This page supports Mercury Mariner 100HP 2-Stroke outboard engines. Use it to find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Mercury collection. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; margin-top:8px; padding:10px 14px; background:#0ea5e9; 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=\"padding:16px; max-width:1100px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 100HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/model plate on the transom bracket or swivel bracket. Record the full serial number and any model code printed on the tag.\u003c\/li\u003e\n    \u003cli\u003eModel codes often include letters for features and shaft length (examples: E = electric start, L = 20\" long shaft, P = power, T = power trim\/tilt). A typical code may look like 100ELPT.\u003c\/li\u003e\n    \u003cli\u003eThese 100HP engines are 2‑stroke inline‑4 designs. If your engine has a separate oil tank and lines running to the powerhead, it is oil‑injected; some older units may be premix-only.\u003c\/li\u003e\n    \u003cli\u003eWhen ordering parts, match by serial range and suffix. Many items interchange within the same inline‑4 2‑stroke family, but always verify before purchase.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px; max-width:1100px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003eMercury Mariner 100HP Inline‑4 2‑Stroke\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;\"\u003eInline‑4, carbureted 2‑stroke with CDI ignition; commonly oil‑injected (some premix variants).\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;\"\u003eExamples include 100ELPT\/100ELPTO inline‑4 2‑stroke models in early–mid 1990s serial ranges.\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;\"\u003eRelatively light for its output, strong hole‑shot, straightforward maintenance, widely supported parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eMany ignition, cooling, and gearcase components cross over with 90\/115 inline‑4 2‑stroke families; always confirm by serial number and model suffix.\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=\"padding:16px; max-width:1100px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 2‑stroke use. Always follow the official service manual and adjust for heavy use or harsh conditions (sand\/silt, high heat, prolonged idling).\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;\"\u003eChange more often if water intrusion is suspected or after impact\/grounding.\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;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace as needed or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eUse correct heat range and gap for your serial range; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\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 #f1f5f9;\"\u003eFuel filter \/ water‑separating filter\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;\"\u003eReplace more often with ethanol fuel or dirty tanks; keep a spare onboard.\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 each season; replace every 1–2 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eCritical for cooling. Shorten interval for sandy, shallow, or high‑heat operation.\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 (corrosion protection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 50 hours; replace when ~50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eChoose the correct material for your water (zinc, aluminum, magnesium).\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;\"\u003eLower unit seal kit (if water in oil)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eAs needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eMilky gear oil indicates water intrusion—pressure\/vacuum test and reseal.\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;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect annually; replace if sticking or corroded\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eA stuck‑open stat can cause cold running and excess smoke; stuck‑closed can overheat.\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;\"\u003eOil‑injection system check (filter\/lines)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect every 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eVerify clean filter, sound lines, and proper tank level\/alarms; premix models follow fuel ratio.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003e\n\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e | \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\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=\"padding:16px; max-width:1100px;\"\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\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\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 and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/ignition-switch\"\u003eIgnition Switch\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/rectifiers\"\u003eRectifiers\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Propulsion: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/propeller-guards\"\u003ePropeller Guards\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    \u003cli\u003eAir\/Fuel Delivery: \u003ca href=\"https:\/\/seasierra.com\/collections\/carburetor\"\u003eCarburetor\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px; max-width:1100px;\"\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 tell‑tale stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eInspect intake screens for blockage; verify impeller condition; check thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eWater pump kit, thermostat, anodes (corrosion management)\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;\"\u003eCheck for fouled plugs, restricted fuel filter, stale fuel; confirm prop pitch\/condition.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eSpark plugs, fuel filter, propeller\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;\"\u003eVerify choke\/enrichment function, plug spark quality, clean carburetors, fresh fuel.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eSpark plugs, carburetor components, electrical items\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;\"\u003eConfirm correct oil ratio or injection function; ensure thermostat isn’t stuck open (cold running).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eHoses (oil lines), fuel filters, spark plugs, thermostat\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eCheck oil level and condition; pressure\/vacuum test for leaking seals; inspect prop shaft for fishing line.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f1f5f9;\"\u003eLower unit seal kit, bearings, propeller\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=\"padding:16px; max-width:1100px;\"\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\u003eMany components interchange within the inline‑4 2‑stroke family (90\/100\/115), but changes by serial range and model suffix do occur. Always match by serial number and model code to avoid fitment issues.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect each season and replace every 1–2 years. Replace sooner after sand\/silt ingestion, weak tell‑tale flow, or any overheat event.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eEvery 100 hours or at least once per year. Always replace crush washers\/seals and look for water (milky oil) or metal particles.\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\u003eProvide the engine serial number, full model code (including suffix like ELPT), shaft length, and any notable features (oil injection, power trim). Photos of the nameplate and existing part help ensure a correct match.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border-top:1px solid #e5e7eb; max-width:1100px;\"\u003e\n  \u003cp\u003eReady to find parts by horsepower, year, and model? Browse the Mercury collection and use Filter \u0026amp; Sort to narrow results for your 100HP 2‑Stroke.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; margin:8px 0 12px; padding:10px 14px; background:#0ea5e9; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"font-size:0.95em; color:#334155;\"\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":"water-pump-impeller-fits-chrysler-force-75-140-hp-outboards-replaces-47-f523065-1-47-803630t","title":"Water Pump Impeller – Fits Chrysler Force 75-140 HP Outboards (Replaces 47-F523065-1, 47-803630T)","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 high-performance \u003cstrong\u003eWater Pump Impeller – Fits Chrysler Force 75-140 HP Outboards\u003c\/strong\u003e ensures reliable cooling for Chrysler Force 75, 85, 90, 100, 105, 115, 120, 125, 135, and 140 HP 2-stroke outboard models manufactured between 1977 and 1989.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Chrysler\/Force part numbers 47-F523065-1 and 47-F523065B-1, Mercury\/Mariner 47-803630T, and aftermarket equivalents including Sierra 18-3030 and Mallory 9-45001.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct OEM-style replacement.\u003c\/li\u003e\n\u003cli\u003eFeatures a press-fit nylon hub for secure installation.\u003c\/li\u003e\n\u003cli\u003eConstructed with 6 flexible neoprene blades for durability and efficient water flow.\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\u003eChrysler \/ Force\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler \/ Force\u003c\/td\u003e\n\u003ctd\u003e47-F523065B-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e47-803630T\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3030\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89450\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSEI Marine\u003c\/td\u003e\n\u003ctd\u003e96-799-03A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500390\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\u003e\u003cb\u003eFor Chrysler Force Engines:\u003c\/b\u003e This impeller fits specific 3-cylinder and 4-cylinder models from 1977–1989. Verify your horsepower and year against the chart.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFor Mercury Mariner Engines:\u003c\/b\u003e This part cross-references to Mercury part 47-803630T, which is used in various 75-140 HP applications that correspond to the Force models listed.\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\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1984\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e85\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1988\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eA\/B\/C\/E\u003c\/td\u003e\n\u003ctd\u003e85\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1989\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983–1984\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e3-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1979–1980\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e105\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1978\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1980\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1981–1989\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eC\u003c\/td\u003e\n\u003ctd\u003e125\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e135\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eChrysler Force\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1978–1980\u003c\/td\u003e\n\u003ctd\u003e47-F523065-1\u003c\/td\u003e\n\u003ctd\u003e4-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury Mariner\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e75-140\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e47-803630T\u003c\/td\u003e\n\u003ctd\u003eCross-reference to Force applications\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\u003eWater Pump Impeller\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n    \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003ePress Fit\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eHeight: 29.72-30.0 mm (1.18 in), Diameter: 57.3-57.4 mm (2.26 in), Shaft Insert Diameter: 20.9-20.92 mm (0.82 in)\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e30g (1.06 oz)\u003c\/dd\u003e\n    \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003e6-Blade Neoprene Impeller\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eNylon hub with 6 flexible neoprene blades\u003c\/dd\u003e\n    \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (30 days to 1 year)\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 Water Pump Impeller (Replaces 47-F523065-1 \/ 47-F523065B-1 \/ 47-803630T)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the negative battery cable for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace a drain pan under the lower unit and remove the gearcase oil drain\/fill screw to empty the old oil.\u003c\/li\u003e\n  \u003cli\u003eRemove the bolts securing the lower unit (gearcase) to the engine's midsection and carefully lower it.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and remove the water pump housing cover to expose the old impeller. Note the direction of the blades before removal.\u003c\/li\u003e\n  \u003cli\u003ePull the old impeller off the driveshaft, being sure to remove the drive key as well.\u003c\/li\u003e\n  \u003cli\u003eClean and inspect the pump housing, face plate, and seals for wear, scoring, or damage. Replace any worn components.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the interior of the pump housing with marine grease.\u003c\/li\u003e\n  \u003cli\u003eSlide the new drive key into its slot on the driveshaft and install the new impeller, rotating the driveshaft clockwise to help seat the blades correctly.\u003c\/li\u003e\n  \u003cli\u003eReinstall the water pump housing, tightening bolts to the manufacturer's torque specification.\u003c\/li\u003e\n  \u003cli\u003eRefill the gearcase with the correct grade and amount of marine gear lube.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit to the engine, ensuring the driveshaft, water tube, and shift shaft align properly.\u003c\/li\u003e\n  \u003cli\u003eOnce fully assembled, test the engine in water to confirm a steady stream of water exits the tell-tale port.\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 impeller fits my specific engine?\u003c\/summary\u003e\n  \u003cp\u003eThe best way is to check the Engine \u0026amp; Model Compatibility table on this page. Match your engine's brand, horsepower, and year. You can also cross-reference the part number stamped on your old impeller with the numbers in our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include a weak or nonexistent water stream from the engine's tell-tale port, an engine overheating alarm, or a noticeable decrease in engine performance. A brittle, cracked, or deformed impeller upon inspection confirms it needs replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace my outboard's impeller?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, it is recommended to inspect your impeller annually and replace it every 1-2 years, or every 100-200 hours of use, depending on operating conditions. If you frequently run in sandy, silty, or saltwater, more frequent replacement is advisable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this myself?\u003c\/summary\u003e\n  \u003cp\u003eYes, replacing an impeller is a common maintenance task for those with mechanical experience and the correct tools. However, due to the importance of the cooling system, we recommend professional installation if you are not fully comfortable with the process.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between this aftermarket part and an OEM one?\u003c\/summary\u003e\n  \u003cp\u003eThis is an aftermarket replacement, not an original equipment manufacturer (OEM) part. It has been engineered to meet or exceed OEM specifications for fit, form, and function using comparable materials. Our parts are made in an ISO 9002 certified facility and are batch-inspected to ensure quality and performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow fast do you ship and what does it cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide, and typical transit time is 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and their costs will be displayed at checkout.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n  \u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal operating conditions. If you experience an issue, please contact our support team with your order details. Returns are accepted within our standard return window for items that are unused and in their original packaging. Please see our full policy page or contact us 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\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717910008123,"sku":"17IC005R2","price":11.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IC005R2.png?v=1762938206"}],"url":"https:\/\/seasierra.com\/collections\/mercury-mariner-100hp-2-stroke-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}