{"product_id":"manatee-mls-cylinder-head-gasket-set-for-gm-ls-v8-4-8l-5-3l-5-7l-2-pcs-multi-layer-steel-seal","title":"MANATEE MLS Cylinder Head Gasket Set for GM LS V8 4.8L\/5.3L\/5.7L – 2 PCS, Multi-Layer Steel Seal","description":"\u003cp\u003e\u003cstrong\u003eMANATEE MLS Cylinder Multi-Layer Head Gasket 2PCS 12589226 is a direct-fit multi-layer steel head gasket engineered for GM LS-series V8 4.8L, 5.3L and 5.7L engines to restore a reliable head-to-block seal.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement head gasket kit is designed to meet OEM form and function for a wide range of Chevrolet, GMC, Buick, Pontiac, Cadillac, Saab and Hummer models from the early 2000s through mid-2010s. Manufactured with multi-layer steel construction and precision-cut sealing beads, the set aims to deliver consistent compression sealing, improved durability over single-layer materials, and compatibility with factory torque sequences and surfaces.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and part numbers does this gasket replace?\u003c\/h3\u003e\n\u003cp\u003eThis kit covers GM LS-family V8 engines, including 4.8L, 5.3L and 5.7L variants. It is cross-referenced to several OEM numbers so you can match it to your original gasket.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect cross-references: 12589226, 12498544, 12565390, 12573949, 98544.\u003c\/li\u003e\n  \u003cli\u003eFits vehicle applications across Chevrolet, GMC, Buick, Pontiac, Cadillac, Saab, and Hummer model years listed by OEM fitment.\u003c\/li\u003e\n  \u003cli\u003eIntended for LS1\/LS6 style heads used in many 2002–2017 GM V8s.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the multi-layer steel (MLS) design benefit sealing and engine life?\u003c\/h3\u003e\n\u003cp\u003eMLS gaskets use alternating layers of steel with coated sealing beads to maintain a uniform clamp load and resist blowouts where combustion pressure is highest. This construction handles the thermal cycles and cylinder pressures typical of high-output V8s better than older single-layer designs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMultiple steel layers reduce deformation under heat and torque.\u003c\/li\u003e\n  \u003cli\u003eCoated sealing beads concentrate sealing where cylinder pressure is greatest.\u003c\/li\u003e\n  \u003cli\u003eImproved resistance to coolant and oil leakage at head interfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before installation to ensure correct fitment?\u003c\/h3\u003e\n\u003cp\u003eConfirming engine family, model year, and original part number is the quickest way to avoid mistakes. Also inspect the cylinder head and block mating surfaces for flatness and cleanliness—MLS gaskets require proper surface prep and correct bolt torque to seal effectively.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify OEM or replacement part numbers against your vehicle's service manual.\u003c\/li\u003e\n  \u003cli\u003eResurface or dress head\/block faces if warped or damaged before installing.\u003c\/li\u003e\n  \u003cli\u003eUse recommended torque sequence and specifications from the manufacturer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there durability or warranty considerations I should know?\u003c\/h3\u003e\n\u003cp\u003eThis kit is manufactured to match OEM geometry and materials for reliable service when installed correctly. The product typically comes with seller-backed support; inspect the gasket set upon receipt and follow recommended installation practices to maximize life span.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProduced to OEM-style standards for form, fit, and function.\u003c\/li\u003e\n  \u003cli\u003eSeller provides after-sales support and technical assistance if needed.\u003c\/li\u003e\n  \u003cli\u003eLongevity is tied to installation quality, head\/block condition, and proper torqueing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, experienced DIYers, and fleet maintenance teams replacing head gaskets on GM LS-series V8 engines who need a multi-layer steel (MLS) solution that matches OEM specifications. Choose this kit if you require direct-fit part number cross-references, improved sealing over older gasket technologies, and a replacement intended for the 4.8L, 5.3L and 5.7L LS-family engines commonly found in Chevrolet, GMC, Buick, Pontiac, Cadillac, Saab and Hummer vehicles.\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 gasket fit LS1 and LS6 engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is designed for LS1\/LS6 family V8 4.8L, 5.3L and 5.7L engines and cross-references GM part numbers listed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to resurface the heads before installing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If the head or block mating surfaces are warped, pitted, or damaged, resurfacing is recommended for a proper MLS seal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MANATEE","offers":[{"title":"Default Title","offer_id":48086744531102,"sku":"B08F76QQHF","price":58.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/manatee-front-packaging.jpg?v=1785903472","url":"https:\/\/northtrailauto.ca\/products\/manatee-mls-cylinder-head-gasket-set-for-gm-ls-v8-4-8l-5-3l-5-7l-2-pcs-multi-layer-steel-seal","provider":"North Trail Auto","version":"1.0","type":"link"}