{"product_id":"mnjws-timing-cover-gasket-set-for-gm-v8-4-8l-6-2l-direct-fit-replacement-for-12633904-heat-resistant-seal","title":"MNJWS Timing Cover Gasket Set for GM V8 4.8L–6.2L — Direct-Fit Replacement for 12633904, Heat-Resistant Seal","description":"\u003cp\u003e\u003cstrong\u003eMNJWS Timing Cover Gasket Set is a complete replacement gasket kit engineered to seal the timing cover to the engine block on 4.8L, 5.3L, 5.7L, 6.0L and 6.2L GM Vortec engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your GM truck or SUV is showing oil seepage near the front of the engine, making unusual noises, or losing pressure around the timing cover area, the gasket set is the component most often responsible. This MNJWS kit is a direct-fit aftermarket alternative for OE part numbers 12633904 and TCS45993, designed to restore a reliable fluid and air seal and keep contaminants away from the timing gear and shaft.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gasket set stop oil leaks at the timing cover?\u003c\/h3\u003e\n\u003cp\u003eThe MNJWS gasket kit combines form-fit profiles and durable sealing materials to create a consistent compression surface between the timing cover and engine block. Proper installation prevents oil from weeping past the cover and collects where it can damage belts or accessories.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-cut gaskets matching factory contact points for even sealing\u003c\/li\u003e\n  \u003cli\u003eDurable elastomer and composite materials resist heat and oil breakdown\u003c\/li\u003e\n  \u003cli\u003eIncludes all pieces needed to rebuild the timing cover joint for a single service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and engines are compatible with this set?\u003c\/h3\u003e\n\u003cp\u003eThis kit is intended for GM vehicles equipped with Vortec V8 engines in the 4.8L through 6.2L range. Coverage includes many Chevrolet, GMC, Cadillac and Buick models from late-1990s through mid-2010s that use the referenced OE part number.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChevrolet: Silverado, Suburban, Tahoe, Avalanche, Camaro, Colorado, Express, Impala, Caprice\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra, Yukon, Savana, Envoy, Canyon\u003c\/li\u003e\n  \u003cli\u003eCadillac Escalade and Buick Rainier when fitted with compatible V8 engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this replace GM part 12633904 or TCS45993 exactly?\u003c\/h3\u003e\n\u003cp\u003eYes — the MNJWS kit is made to replace GM 12633904 and aftermarket reference TCS45993, offering the same mounting points and sealing surfaces for a direct fit. Although it is an aftermarket product and not a GM-branded part, it is manufactured to meet or exceed OEM function and longevity expectations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to match OEM dimensions and bolt patterns\u003c\/li\u003e\n  \u003cli\u003eManufactured from high-temperature resistant materials\u003c\/li\u003e\n  \u003cli\u003eBacked by a 12-month limited warranty for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what comes in the kit?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable disassembling front-end engine components; follow a vehicle-specific repair manual for torque specs and sealing procedures. The kit contains all timing cover gasket components needed to reseal the timing cover during a single service event.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete set of timing cover gaskets designed for one install\u003c\/li\u003e\n  \u003cli\u003eStraightforward direct-replacement design reduces fitment adjustments\u003c\/li\u003e\n  \u003cli\u003eRecommended: clean mating surfaces and replace seals as directed in service manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The MNJWS Timing Cover Gasket Set is suited for professional mechanics, experienced DIY technicians, and fleet maintenance teams working on GM Vortec V8 engines (4.8L–6.2L) in trucks, SUVs, and vans. Choose this kit if you're replacing a leaking or damaged timing cover gasket, need a direct-fit substitute for OE 12633904\/TCS45993, and want an aftermarket part built to withstand heat and prolonged exposure to oil.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit my 2007 Chevy Silverado 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The MNJWS kit is compatible with 5.3L Vortec engines, including 2007 Silverado models that use OE 12633904.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this an OEM GM part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It's an aftermarket replacement designed to match or exceed OEM fit and performance for part 12633904\/TCS45993.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MNJWS","offers":[{"title":"Default Title","offer_id":48084596850846,"sku":"B08F2GTC3X","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mnjws-timing-cover-gasket-front-packaging.jpg?v=1785860468","url":"https:\/\/northtrailauto.ca\/products\/mnjws-timing-cover-gasket-set-for-gm-v8-4-8l-6-2l-direct-fit-replacement-for-12633904-heat-resistant-seal","provider":"North Trail Auto","version":"1.0","type":"link"}