{"title":"Onan 24HP 4-Stroke Marine Engine Components","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is for Onan 4-Stroke 24HP outboard engines. Use it to find compatible replacement parts and service information. Below you’ll find maintenance tips, commonly replaced components, and troubleshooting guidance. You can also browse broader parts categories across our catalog. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection pages you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; padding:10px 16px; background:#0e7490; color:#fff; text-decoration:none; border-radius:6px;\"\u003eStart Browsing Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 24HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFind the nameplate\/serial plate on the swivel bracket or block cover. It lists model designation, serial number, and build details.\u003c\/li\u003e\n    \u003cli\u003eDecode the model suffixes for shaft length, control type, and production year. Record these before ordering parts.\u003c\/li\u003e\n    \u003cli\u003eConfirm it’s a 4-stroke by noting the engine oil dipstick\/filler, valve cover, and absence of a 2-stroke oil tank\/mixing requirement.\u003c\/li\u003e\n    \u003cli\u003eNote fuel system type (carbureted vs. EFI) and charging output; these affect filters, sensors, and electrical components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003e24HP 4‑Stroke Small-Block Platform\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;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCompact inline 4-stroke, typically carbureted or EFI with belt-driven cooling and conventional 12V charging.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e24HP 4-stroke variants in this class; confirm exact model and suffix on the nameplate for parts compatibility.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGood fuel economy, quiet operation, and steady charging output for accessories.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eThermostat temperatures, belt lengths, and cooling hose sizes may vary by year and sub-model—verify before ordering.\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;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 4-stroke small outboards. Always follow the factory 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;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWarm engine before draining; replace crush washer if applicable.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect for water intrusion and metal shavings; replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck gap, replace if fouled or out of spec.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eDrain\/replace more frequently with ethanol fuel or dirty tanks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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;\"\u003eWater pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 2–3 seasons (or 200–300 hours)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace sooner if weak telltale or overheat occurs.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 50 hours; replace at ~50% wear\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMatch alloy to water type (salt, brackish, or fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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  \u003cp style=\"font-size:12px; color:#6b7280;\"\u003e*Intervals are typical for recreational use. Severe duty, high hours, or harsh environments may require shorter intervals.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service — \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\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, \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\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eSealing \u0026amp; Gaskets — \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/oil-seals\"\u003eOil Seals\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eSensors \u0026amp; Switches — \u003ca href=\"https:\/\/seasierra.com\/collections\/sensors\"\u003eSensors\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eBelts \u0026amp; Tension — \u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/tensioner-pulley\"\u003eTensioner Pulleys\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #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;\"\u003eWeak telltale \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect intake screen for blockage; confirm pump housing and impeller condition; verify thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump kit, intake screen, thermostat, hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck fuel quality, filter restriction, and spark plug condition; inspect for intake air leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter, fuel pump, spark plugs, gaskets\/hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify battery voltage, clean terminals; confirm choke\/EFI enrichment; inspect plugs and idle mixture.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs, electrical items, sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eDrain and inspect gear oil; check for water intrusion and seal damage; listen for bearing noise.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, oil seals, bearings\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;\"\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 service items are shared, but many cooling, electrical, and sealing components change across years and sub‑models. Always confirm the exact model and serial suffix 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 2–3 seasons (or sooner) if you see reduced telltale flow, overheating, or vane set from storage.\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\u003eTypically every 100 hours or each season. If the oil appears milky, burnt, or metallic, service immediately and replace seals as needed.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the complete model code, serial number, and any suffix letters\/numbers from the nameplate, plus photos of the part location if possible.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border-top:1px solid #e5e7eb;\"\u003e\n  \u003cp\u003eReady to find parts by category and service need? Browse our catalog and narrow by horsepower, year, and model as available.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; padding:10px 16px; background:#0e7490; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse Parts \u0026amp; Kits\u003c\/a\u003e\n  \u003cp style=\"font-size:12px; color:#6b7280; margin-top:8px;\"\u003eIf you’re unsure about your model, send us a clear photo of the nameplate and the part you need—we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"carburetor-repair-kit-fits-onan-p-series-replaces-146-0657-146-0478-146-6100","title":"Carburetor Repair Kit for Onan P-Series Engines – Replaces 146-0657, 146-0478 and 146-6100","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eRestore reliable fuel-system operation with this aftermarket \u003cstrong\u003ecarburetor repair kit for selected Onan P-Series and related engines\u003c\/strong\u003e. The kit is intended for engines equipped with compatible Nikki-brand carburetors, including the applications listed below. Always compare the carburetor, gasket style and existing part numbers before ordering.\u003c\/p\u003e\n\u003cp\u003eThis kit is listed as a replacement for Onan part numbers \u003cstrong\u003e146-0657, 146-0650, 146-0478 and 146-6100\u003c\/strong\u003e. These references should be used together with the carburetor and engine application information to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for rebuilding compatible Nikki carburetors.\u003c\/li\u003e\n\u003cli\u003eIncludes replacement gaskets, float components, valve and other rebuild parts listed below.\u003c\/li\u003e\n\u003cli\u003eFor gasoline fuel systems.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement component; it is not an original equipment manufacturer part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to compare the listed OEM references.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eSuperseded By\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003e146-0650\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003e146-0478\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003e146-6100\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe following applications are listed for this kit when equipped with a compatible Nikki-brand carburetor. Model, specification, serial and carburetor details can vary, so confirm the identification markings on your engine and carburetor before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n\u003cthead\u003e\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\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP216G\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e146-0650 listed as superseded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP218G\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e146-0650 listed as superseded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP220G\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e146-0650 listed as superseded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP224G\u003c\/td\u003e\n\u003ctd\u003e24\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e146-0650 listed as superseded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eLX720\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eAlso listed as OL16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eLX770\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eAlso listed as OL18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eLX790\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eAlso listed as OL20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eOL16\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eSame application as LX720\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eOL18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eSame application as LX770\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eOL20\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eSame application as LX790\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eB48G-GA020\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eMiller Onan engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eB48G-GA19.9\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eMiller Onan engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP126G\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eP128G\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnan\u003c\/td\u003e\n\u003ctd\u003eT260G\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e146-0657\u003c\/td\u003e\n\u003ctd\u003eBeginning specification F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe kit is also listed for the following Onan-installed Nikki carburetor part numbers:\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Compatible Nikki Carburetors\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOnan Carburetor Part Number\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0388\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0389\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0412\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0428\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0430\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0478\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0479\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0495\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0496\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0659\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0697\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0698\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e146-0700\u003c\/td\u003e\n\u003ctd\u003eNikki carburetor\u003c\/td\u003e\n\u003ctd\u003eFor listed P-Series applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor repair kit\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement components for compatible Nikki carburetors\u003c\/dd\u003e\n\u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n\u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eNikki carburetor specific\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e7.95 x 5.63 x 1.54 in (201.93 x 143 x 39.12 mm)\u003c\/dd\u003e\n\u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eFor listed Nikki-brand carburetors\u003c\/dd\u003e\n\u003cdt\u003eAdditional Note\u003c\/dt\u003e\n\u003cdd\u003eConfirm carburetor number and gasket style before purchase\u003c\/dd\u003e\n\u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e6 months, as reported in seller information\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Air horn gasket\u003c\/li\u003e\n\u003cli\u003e4 x Set screws\u003c\/li\u003e\n\u003cli\u003e1 x Float valve\u003c\/li\u003e\n\u003cli\u003e1 x Float pin\u003c\/li\u003e\n\u003cli\u003e1 x Float assembly\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Gaskets — verify gasket style before installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e2 x O-rings\u003c\/li\u003e\n\u003cli\u003e1 x Fuel filter\u003c\/li\u003e\n\u003cli\u003e3 x Straps\u003c\/li\u003e\n\u003cli\u003e2 x Rubber pipes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Onan used two different carburetor bowl-gasket styles. Inspect the existing gasket and compare it with the product images before purchasing or installing the kit. Do not force a gasket that does not match the carburetor bowl.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication note:\u003c\/strong\u003e This listing is not intended for Onan generator or genset applications unless the engine and carburetor identification specifically confirms compatibility.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and allow the engine to cool completely.\u003c\/li\u003e\n\u003cli\u003eTurn off the fuel supply and safely drain remaining fuel from the carburetor.\u003c\/li\u003e\n\u003cli\u003eRemove the air-cleaner assembly carefully.\u003c\/li\u003e\n\u003cli\u003eDisconnect the fuel lines, throttle and choke linkages, recording their positions for reassembly.\u003c\/li\u003e\n\u003cli\u003eRemove the carburetor from the engine.\u003c\/li\u003e\n\u003cli\u003eDisassemble the carburetor on a clean workbench and note the position of each part.\u003c\/li\u003e\n\u003cli\u003eClean suitable metal components with carburetor cleaner. Keep cleaner away from non-metal parts and rubber components.\u003c\/li\u003e\n\u003cli\u003eReplace the old gaskets, float valve and other worn components with the corresponding parts in the kit.\u003c\/li\u003e\n\u003cli\u003eReassemble the carburetor and ensure that all parts are correctly seated.\u003c\/li\u003e\n\u003cli\u003eReinstall the carburetor and reconnect all lines and linkages.\u003c\/li\u003e\n\u003cli\u003eRestore the fuel supply, reconnect the battery and check carefully for leaks before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm that this kit fits my Onan engine?\u003c\/summary\u003e\u003cp\u003eConfirm both the engine model and the carburetor identification. This kit is listed for the Onan applications and Nikki carburetor numbers shown on this page, but model variations may exist. Compare your original carburetor and gasket before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs that a carburetor needs rebuilding?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include hard starting, stalling at low speed, rough idling, black exhaust smoke from an overly rich mixture, and visible fuel leakage around the carburetor.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eMy carburetor bowl gasket looks different. What should I do?\u003c\/summary\u003e\u003cp\u003e\u003cstrong\u003eDo not install the kit.\u003c\/strong\u003e The listed applications may use different gasket styles. Compare the existing bowl gasket with the product images and confirm the correct style before purchase. Do not operate the engine if the gasket does not seat correctly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this kit for my Onan generator?\u003c\/summary\u003e\u003cp\u003eThis listing is not intended for Onan generator or genset applications unless the exact engine and carburetor identification confirms a match. Confirm the application before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement kit intended for the compatible applications and carburetors listed on this page.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eWorldwide shipping is available. Typical transit time is 5–15 days, and standard shipping is free for most regions. Expedited options, when available, are shown at checkout based on destination.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThe product is listed with a 6-month warranty against manufacturing defects under normal use, based on seller information. Contact support with your order details if a problem occurs. Returns are subject to the applicable policy and generally require the item to be unused and in its original condition.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the engine model, carburetor number, gasket style and product images before purchase.\u003c\/li\u003e\n\u003cli\u003eIf any identification detail differs, do not install the kit until compatibility has been confirmed.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement component, not an OEM part.\u003c\/li\u003e\n\u003cli\u003eWork in a well-ventilated area, keep fuel away from ignition sources and follow the engine manufacturer's safety procedures.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when servicing fuel-system components.\u003c\/li\u003e\n\u003c\/ul\u003e\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 designed for dependable real-world service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery is available to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing with attention to materials and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723786424635,"sku":"JCR-24-456","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/JCR-24-456.png?v=1763031727"}],"url":"https:\/\/seasierra.com\/collections\/onan-24hp-4-stroke-marine-engine-components.oembed","provider":"SeaSierra","version":"1.0","type":"link"}