{"product_id":"alternator-v-belt-fits-mercruiser-3-0l-3-0l-mpi-replaces-57-862054q-57-862054","title":"Alternator V-Belt – Fits MerCruiser 3.0L\/3.0L MPI (Replaces 57-862054Q, 57-862054)","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  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis replacement \u003cstrong\u003eAlternator V-Belt – Fits MerCruiser 3.0L\/3.0L MPI 1999 \u0026amp; Up\u003c\/strong\u003e is engineered for reliable power transmission to the alternator on MerCruiser 3.0L and 3.0L MPI (135 HP) 4-stroke engines from 1999 and newer, ensuring your vessel's electrical system performs correctly.\u003c\/p\u003e\n  \u003cp\u003eThis belt is a direct interchange for several part numbers, including Mercury 57-862054Q, MerCruiser 57-862054, Quicksilver 57-862054Q, and Sierra 18-15114, offering a precise fit and function.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstalls as a key component of the engine's accessory belt system.\u003c\/li\u003e\n    \u003cli\u003eDesigned specifically for marine gasoline engine environments.\u003c\/li\u003e\n    \u003cli\u003ePackage contains a single V-belt for a complete replacement.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\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\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e57-862054Q\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e57-862054\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e57-862054Q\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e57-862054\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eQuicksilver\u003c\/td\u003e\n        \u003ctd\u003e57-862054Q\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-15114\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\u003eConfirm your engine model and year in the table below to ensure correct fitment.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models for MerCruiser\"\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\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2008\u003c\/td\u003e\n        \u003ctd\u003e57-862054Q\u003c\/td\u003e\n        \u003ctd\u003eFor engines with serial number 0L382122 \u0026amp; up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L MPI\u003c\/td\u003e\n        \u003ctd\u003e135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2008\u003c\/td\u003e\n        \u003ctd\u003e57-862054Q\u003c\/td\u003e\n        \u003ctd\u003eFor engines with serial number 0L382122 \u0026amp; up\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\u003eV-Belt (Alternator Belt)\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eEngine Accessory Belt System\u003c\/dd\u003e\n    \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e1003 mm (39.49 in) length\u003c\/dd\u003e\n    \u003cdt\u003eWorking Pressure\u003c\/dt\u003e\n\u003cdd\u003eStandard tension per engine specification\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eReplacement for alternator drive V-belt on MerCruiser engines\u003c\/dd\u003e\n  \u003c\/dl\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x V-Belt (57-862054Q)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery's negative terminal to ensure safety.\u003c\/li\u003e\n    \u003cli\u003eLocate the alternator and identify the belt tensioner mechanism.\u003c\/li\u003e\n    \u003cli\u003eLoosen the tensioner to create slack in the old belt.\u003c\/li\u003e\n    \u003cli\u003eCarefully remove the old belt from all pulleys.\u003c\/li\u003e\n    \u003cli\u003eRoute the new belt according to your engine's diagram, ensuring it is properly seated in each pulley groove.\u003c\/li\u003e\n    \u003cli\u003eApply tension to the new belt as specified in your engine's service manual. Avoid over-tightening.\u003c\/li\u003e\n    \u003cli\u003eSecure the tensioner and any other loosened components.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, start the engine, and verify the belt is running smoothly and quietly.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n\u003csummary\u003eHow do I confirm this belt fits my specific engine?\u003c\/summary\u003e\n\u003cp\u003eThis V-belt fits MerCruiser 3.0L and 3.0L MPI models from 1999–2008 with serial number 0L382122 and higher. Always compare your old part number to the references in our Part Number Matrix, such as 57-862054Q, to guarantee fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the signs of a failing alternator belt?\u003c\/summary\u003e\n\u003cp\u003eKey indicators include a loud squealing noise from the engine, visible glazing or cracks on the belt surface, a battery warning light on the dashboard, or engine overheating. Any of these signs suggest an immediate inspection is needed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should I replace my alternator belt?\u003c\/summary\u003e\n\u003cp\u003eRefer to your engine's service manual for specific maintenance intervals. As a general guideline, inspect the belt annually for signs of wear, such as fraying or cracking, and replace it proactively to avoid failure.\u003c\/p\u003e\n\u003c\/details\u003e\n  \u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n  \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  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718268588347,"sku":"23BL228(return)","price":15.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/seasierra.com\/products\/alternator-v-belt-fits-mercruiser-3-0l-3-0l-mpi-replaces-57-862054q-57-862054","provider":"SeaSierra","version":"1.0","type":"link"}