{"product_id":"lynshine-exhaust-manifold-gasket-bolt-kit-12617944-for-gm-ls-engines-mls-gaskets-12-bolts","title":"LYNSHINE Exhaust Manifold Gasket \u0026 Bolt Kit 12617944 for GM LS Engines — MLS Gaskets + 12 Bolts","description":"\u003cstrong\u003eLYNSHINE 12617944 is a complete exhaust manifold gasket and bolt kit engineered to restore a tight, durable seal on GM LS-series V8 engines.\u003c\/strong\u003e\n\nThis kit supplies the main multilayer steel (MLS) header gasket, three exhaust manifold gaskets and a full set of 12 replacement bolts designed for a wide range of Chevy, GMC, Cadillac and related GM models that use LS1, LS2, LS3, LS6, LQ4 and LQ9 families. The components are built to resist heat and pressure typical of factory exhaust ports, making it a practical service kit when you’re repairing leaks, replacing manifolds or doing a head service.\n\n\u003ch3\u003eWhich vehicles and engines does this gasket kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe LYNSHINE kit lists multiple OEM part numbers and fits many GM trucks, SUVs and passenger cars equipped with small- and big-block GM V8s from late 1990s through 2013 and beyond. Compatible models include Silverado\/Sierra, Suburban, Tahoe, Avalanche, Camaro, Corvette, Escalade, Yukon, Hummer H2\/H3, and several Isuzu and Saab rebadged GM platforms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM references: 12617944, 12558573, 12600530, 12620947 for cross-checking.\u003c\/li\u003e\n  \u003cli\u003eEngine families: LS1, LS2, LS3, LS6, LQ4, LQ9 and similar V8s (4.8L, 5.3L, 5.7L, 6.0L, 6.2L).\u003c\/li\u003e\n  \u003cli\u003eVehicle examples: Silverado\/Sierra 1500-3500, Suburban, Tahoe, Avalanche, Hummer H2\/H3, Camaro, Corvette.\u003c\/li\u003e\n  \u003cli\u003eAlways verify OEM part number against your VIN or service manual before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes these gaskets and bolts suitable for exhaust use?\u003c\/h3\u003e\n\u003cp\u003eThe primary gasket in this kit is a layered steel design that maintains sealing under repeated thermal cycling and exhaust backpressure without quickly deforming. The included bolts are intended to replace corroded or stretched fasteners, restoring proper clamp load and preventing leaks caused by loose manifolds.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMultilayer steel (MLS) construction resists high heat and prevents blowouts.\u003c\/li\u003e\n  \u003cli\u003eBolt set replaces worn or rusted fasteners for accurate torque and fit.\u003c\/li\u003e\n  \u003cli\u003eManufactured and inspected to meet typical OE fit and function standards.\u003c\/li\u003e\n  \u003cli\u003ePackaged as a matched kit: 2 main header gaskets + 3 manifold gaskets + 12 bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain this exhaust manifold gasket kit?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a standard exhaust manifold service: remove the old manifold, clean mating surfaces thoroughly, fit the new gaskets, and torque the new bolts to OEM specifications in the recommended sequence. Regular visual inspections after the first heat cycles and at routine service intervals help catch any settling or fastener loosening early.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean flange surfaces to bare metal; remove carbon and old gasket residue.\u003c\/li\u003e\n  \u003cli\u003eUse proper torque specs and tightening sequence per the vehicle service manual.\u003c\/li\u003e\n  \u003cli\u003eRetorque after initial heat cycles if specified by manufacturer guidance.\u003c\/li\u003e\n  \u003cli\u003eInspect for exhaust leaks by sound or smoke at startup and idle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose this LYNSHINE replacement kit over single parts?\u003c\/h3\u003e\n\u003cp\u003eBuying the matched kit gives you all the gaskets and bolts needed for a complete manifold reinstall or repair, preventing repeat trips to the parts store and ensuring compatibility across the mating surfaces. The kit approach reduces the risk of mismatched parts and saves time during a repair or engine rebuild.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne purchase contains all required gaskets and fasteners for the job.\u003c\/li\u003e\n  \u003cli\u003eCost-effective compared with buying each piece separately.\u003c\/li\u003e\n  \u003cli\u003ePre-inspected components reduce variability and installation surprises.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nThis LYNSHINE 12617944 kit is ideal for mechanics, DIY enthusiasts and fleet technicians working on GM LS-series V8s who need a reliable, heat-resistant exhaust seal and new hardware for manifold installation. Confirm the OEM reference or your vehicle’s engine code before ordering to ensure correct fitment, and follow factory torque and installation procedures for best results.\n\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 include all bolts and gaskets needed for a full manifold install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it includes 2 header gaskets, 3 manifold gaskets and 12 bolts to complete a standard install.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these gaskets fit my LS-based 5.3L Silverado?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Likely yes if your OEM number matches the listed references; always confirm with VIN or service manual.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"LYNSHINE","offers":[{"title":"Default Title","offer_id":48084587053214,"sku":"B0CX541XD8","price":33.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lynshine-exhaust-gasket-kit-front-packaging.jpg?v=1785860094","url":"https:\/\/northtrailauto.ca\/products\/lynshine-exhaust-manifold-gasket-bolt-kit-12617944-for-gm-ls-engines-mls-gaskets-12-bolts","provider":"North Trail Auto","version":"1.0","type":"link"}