{"product_id":"gibson-replacement-header-gasket-chevrolet-4-8l-5-3l-gm-5-3l-6-0l","title":"Gibson Replacement Header Gasket - Chevrolet 4.8L - 5.3L \u0026 GM 5.3L\/6.0L","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e9241\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 677418004373\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGibson Replacement Header Gasket Chevrolet 4.8L 5.3L GM 5.3L 6.0L 1999-2007\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGibson replacement header gaskets deliver a precise seal for Chevrolet 4.8L and 5.3L Vortec engines plus GM 5.3L and 6.0L LS engines in trucks and SUVs like Silverado Sierra Tahoe and Yukon. These MLS gaskets pair perfectly with Gibson performance headers for improved exhaust flow. Expect reliable sealing that supports average 5-10 horsepower gains when installed with compatible headers and backed by Lifetime Limited Warranty.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMLS Multi-Layer Steel Construction:\u003c\/strong\u003e Forms a durable leak-proof barrier that handles extreme cylinder pressures and exhaust heat over 2000 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Port Matching:\u003c\/strong\u003e Square exhaust ports match Gibson headers and OEM manifolds on cathedral port LS engines for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as Pair:\u003c\/strong\u003e Includes two gaskets for left and right headers with 040 inch thickness for stock or performance setups\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Resistant:\u003c\/strong\u003e Maintains integrity under boost or high RPM conditions without cracking or blowing out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt-On Direct Fit:\u003c\/strong\u003e No trimming or modifications required for hassle-free replacement on 1999-2007 GM LS applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm engine code LR4 LM7 L59 LY5 LQ4 or LQ9 prior to purchase\u003c\/li\u003e\n\u003cli\u003eClean cylinder head and header surfaces thoroughly for best results\u003c\/li\u003e\n\u003cli\u003eStandard ground shipping with tracking provided\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eTorque header bolts to manufacturer specs in 3 stages using moly lube\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM ARP or aftermarket header bolts and studs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 1500\u003c\/td\u003e\n\u003ctd\u003e4.8L V8 5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSierra 1500\u003c\/td\u003e\n\u003ctd\u003e4.8L V8 5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2006\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTahoe\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2006\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eYukon\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2006\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eAvalanche 1500\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2006\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 1500 HD\u003c\/td\u003e\n\u003ctd\u003e6.0L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2006\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSierra 1500 HD\u003c\/td\u003e\n\u003ctd\u003e6.0L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2006\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSuburban 1500\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2006\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eYukon XL 1500\u003c\/td\u003e\n\u003ctd\u003e5.3L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2007\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eExpress 2500\u003c\/td\u003e\n\u003ctd\u003e6.0L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Gibson?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven leader in performance exhaust components since 1969\u003c\/li\u003e\n\u003cli\u003eEngineered and tested for GM LS engines in real-world conditions\u003c\/li\u003e\n\u003cli\u003ePrecision manufacturing ensures exact fit and long-term durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this gasket fit a 2004 Chevy Silverado 1500 with 5.3L LM7 engine?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes it fits 1999-2006 Silverado 1500 5.3L V8 models with cathedral port heads including LM7 L59 and Vortec variants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are these header gaskets made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Multi-layer steel MLS with 040 inch thickness designed for high-pressure sealing on LS engines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty coverage does this product have?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Backed by Gibson Lifetime Limited Warranty against defects in materials and workmanship\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Standard Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective box 12 x 9 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.38 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Gibson","offers":[{"title":"Default Title","offer_id":39763807567951,"sku":"GIB9241","price":38.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/gibson-replacement-header-gasket-chevrolet-4_8l-5_3l-gm-5_3l6_0l-gibson.webp?v=1766516228","url":"https:\/\/www.blackopsautoworks.com\/products\/gibson-replacement-header-gasket-chevrolet-4-8l-5-3l-gm-5-3l-6-0l","provider":"Black Ops Auto Works","version":"1.0","type":"link"}