{"product_id":"yovobs-mls-exhaust-manifold-gasket-12-bolt-kit-for-ls-engines-high-temp-mls-gaskets-corrosion-resistant-bolts","title":"YOVOBS MLS Exhaust Manifold Gasket \u0026 12-Bolt Kit for LS Engines — High-Temp MLS Gaskets, Corrosion-Resistant Bolts","description":"\u003cp\u003e\u003cstrong\u003eThe YOVOBS 12617944 MLS Exhaust Manifold Gasket \u0026amp; 12-Bolt Kit is a complete, high-temperature replacement set engineered to restore a leak-free seal on most LS-series V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit replaces worn or damaged exhaust manifold gaskets with high-density multi-layer steel (MLS) parts and supplies a full set of corrosion-resistant flange bolts for a reliable, long-lasting seal. Designed to meet original equipment dimensions and function, the package is meant for mechanics and DIYers who need a straightforward swap for Chevrolet, GMC, Cadillac and other compatible vehicles that use LS family engines (excluding LS7). The components are optimized to handle heat, pressure and vibration typical in performance and heavy-use applications.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and vehicles will this gasket kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe kit matches OE part numbers and fits the majority of LS-series V8 engines, covering a broad range of General Motors platforms. It suits many model years and trims for trucks, SUVs and performance cars that use LS-family cylinder heads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with LS1, LS2, LS3, LS6, LQ4, LQ9, LM7, LR4, L59, LM4, L33 and similar LS engines (not LS7).\u003c\/li\u003e\n  \u003cli\u003eWorks with 4.8L, 5.3L, 5.7L, 6.0L and 6.2L V8 applications.\u003c\/li\u003e\n  \u003cli\u003eFits vehicles like Silverado, Sierra, Camaro, Corvette, Tahoe, Escalade, CTS, Firebird, H2\/H3, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the MLS construction improve performance and longevity?\u003c\/h3\u003e\n\u003cp\u003eMulti-layer steel gaskets deliver consistent sealing under extreme temperatures and repeated thermal cycling. They’re less prone to blowout or permanent deformation than single-layer or composite gaskets, which helps prevent exhaust leaks and reduces noise and vibration from the manifold area.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-density steel layers maintain clamp load across heat cycles for a stable seal.\u003c\/li\u003e\n  \u003cli\u003eResistant to high exhaust temperatures found in performance or towing scenarios.\u003c\/li\u003e\n  \u003cli\u003eReduces the chance of exhaust leak-related check-engine or drivability symptoms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included in the kit and why are the bolts different from stock?\u003c\/h3\u003e\n\u003cp\u003eThis kit supplies two MLS header gaskets plus twelve stainless-steel flange bolts sized for a precise fit. The bolts include built-in washers and a corrosion-resistant finish to improve clamping reliability and durability compared with typical OEM fasteners.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2 exhaust manifold\/header gaskets matched to OE contours and bolt patterns.\u003c\/li\u003e\n  \u003cli\u003e12 M8 x 1.25 flange bolts, 25mm underhead length, with integrated washers for uniform clamp force.\u003c\/li\u003e\n  \u003cli\u003eBolts offer superior rust resistance—ideal for humid, salted-road or high-heat environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation straightforward and what should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard exhaust manifold replacement steps but may require basic hand tools, torque wrench and safety precautions. Verify your engine variant and OEM part numbers before ordering to prevent fitment issues, and inspect mounting surfaces for warpage or damage during replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm compatibility with vehicle year, engine code and OE part numbers (12617944, 12558573, 12600530, 12620947, MS16124).\u003c\/li\u003e\n  \u003cli\u003eUse a torque wrench to achieve correct clamping sequence and values for a leak-free seal.\u003c\/li\u003e\n  \u003cli\u003eReplace any damaged studs or warped flange surfaces to ensure proper gasket function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The YOVOBS MLS Exhaust Manifold Gasket \u0026amp; 12-Bolt Kit is aimed at professional technicians, experienced DIYers and performance enthusiasts working on LS-family GM engines who need a dependable replacement that matches OE fitment. It’s particularly suited for vehicles exposed to heavy loads, high temperatures or frequent thermal cycling—any application where a robust, corrosion-resistant gasket and high-quality fasteners are required to restore or maintain exhaust integrity.\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 LS1 and LS3 engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit fits most LS-series engines including LS1 and LS3, excluding LS7. Verify your OE part number to confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the supplied bolts corrosion resistant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes stainless-steel flange bolts with built-in washers for improved rust resistance and even clamping.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YOVOBS","offers":[{"title":"Default Title","offer_id":55165577298263,"sku":"B0FNWQ6HJC","price":32.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/yovobs-front-packaging-gasket-kit.jpg?v=1790355946","url":"https:\/\/britishgarage.co.uk\/products\/yovobs-mls-exhaust-manifold-gasket-12-bolt-kit-for-ls-engines-high-temp-mls-gaskets-corrosion-resistant-bolts","provider":"British Garage","version":"1.0","type":"link"}