{"product_id":"timing-cover-gasket-18-0887-for-volvo-penta-marine-engines-cam-gear-cover-gasket","title":"Sierra 18-0887 Timing Cover Gasket for GM 4.3L, 5.0L \u0026 5.7L Engines, Replaces 3852654, 3853512","description":"\u003cp\u003eThe Sierra 18-0887 Timing Cover Gasket seals the timing cover against the engine block on GM 4.3L, 5.0L, and 5.7L marine engines, preventing oil leaks at this critical junction. It is a direct-fit replacement gasket designed to restore a proper seal when the original gasket has hardened, cracked, or begun leaking from age and heat cycling. Installing a fresh timing cover gasket during a timing cover removal, timing chain service, or general engine reseal helps ensure the cover seats correctly and holds oil pressure without seepage.\u003c\/p\u003e\u003cp\u003eThis gasket is manufactured to match the mounting pattern and sealing surface of the OEM GM timing cover gasket, cross-referencing directly to OEM part numbers 3852654 and 3853512. Because it is a precise fit replacement, no modification to the timing cover or engine block is required during installation. Boat owners and marine mechanics use it as a maintenance part whenever the timing cover is removed for inspection, repair, or replacement of related timing components.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-0887\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Timing Cover Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e GM 4.3L, 5.0L \u0026amp; 5.7L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 3852654, 3853512\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM 4.3L engines\u003c\/li\u003e\n\u003cli\u003eGM 5.0L engines\u003c\/li\u003e\n\u003cli\u003eGM 5.7L engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3852654\u003c\/li\u003e\n\u003cli\u003e3853512\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0887 timing cover gasket fit?\u003c\/strong\u003e The Sierra 18-0887 timing cover gasket fits GM 4.3L, 5.0L, and 5.7L marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this gasket replace?\u003c\/strong\u003e Sierra 18-0887 replaces OEM GM part numbers 3852654 and 3853512.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-0887 a direct OEM replacement?\u003c\/strong\u003e Yes, the Sierra 18-0887 is a direct cross-reference replacement for OEM timing cover gaskets 3852654 and 3853512, so no modification is needed for installation on compatible GM engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the timing cover gasket weigh?\u003c\/strong\u003e The Sierra 18-0887 timing cover gasket weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this gasket be replaced?\u003c\/strong\u003e This gasket should be replaced any time the timing cover is removed from a GM 4.3L, 5.0L, or 5.7L marine engine, such as during timing chain service or if the original gasket is leaking oil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this gasket be reused after removing the timing cover?\u003c\/strong\u003e No, a timing cover gasket like the Sierra 18-0887 should be replaced with a new one any time the timing cover is removed, since reusing a compressed gasket can result in oil leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-0887 fit both carbureted and fuel-injected GM 4.3L, 5.0L, and 5.7L engines?\u003c\/strong\u003e The Sierra 18-0887 is listed as fitting GM 4.3L, 5.0L, and 5.7L engines generally, based on displacement rather than fuel delivery type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand is part number 18-0887?\u003c\/strong\u003e Part number 18-0887 is manufactured by Sierra.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this gasket seal correctly without additional sealant?\u003c\/strong\u003e The Sierra 18-0887 is designed to match the OEM sealing surface and pattern of gaskets 3852654 and 3853512 for proper sealing when installed per standard timing cover installation procedures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0887 gasket sold individually?\u003c\/strong\u003e The Sierra 18-0887 timing cover gasket is a single gasket part matched to GM 4.3L, 5.0L, and 5.7L timing covers.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086141147,"sku":"SIE-18-0887","price":4.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0887_lg_1__71421.1558121132.500.750.jpg?v=1785329144","url":"https:\/\/www.goodvibesmarina.com\/products\/timing-cover-gasket-18-0887-for-volvo-penta-marine-engines-cam-gear-cover-gasket","provider":"Good Vibes Marina","version":"1.0","type":"link"}