{"product_id":"performance-head-gasket-kit-for-chevrolet-silverado-2002-2011-4-8l-5-3l","title":"Performance Head Gasket Kit for Chevrolet Silverado (2002-2011) 4.8L 5.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Full Engine Head Gasket Kit for 2002-2011 Chevrolet Silverado (GMT800 \/ GMT900)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Head Gasket Kit restores compression integrity and fluid isolation across the cylinder heads, crankcase, and valvetrain on 2002-2011 Silverado trucks to eliminate internal fluid crossover and combustion blow-by.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Silverado Gasket Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory cylinder head and ancillary gaskets on GM \u003cstrong\u003eGen III\u003c\/strong\u003e and \u003cstrong\u003eGen IV Vortec\u003c\/strong\u003e engines face severe thermal fatigue over prolonged operating cycles. The combination of a cast-iron cylinder block mated to aluminum cylinder heads creates differing thermal expansion rates. Over time, scrubbing wear erodes factory sealing fire rings, causing coolant to seep into combustion chambers or engine oil galleries. Additionally, age-hardened valve stem seals and brittle valley cover gaskets lead to unmetered vacuum leaks, excessive oil consumption, and external oil seepage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive overhaul kit features Multi-Layer Steel (\u003cstrong\u003eMLS\u003c\/strong\u003e) head gaskets designed to withstand high peak cylinder pressures and resist thermal shearing between mismatched alloys. Coated with high-temperature fluoroelastomer, each layer provides micro-sealing against minor deck surface variations. Precision-molded intake and exhaust manifold gaskets eliminate exhaust leaks and unmetered air intrusion, while a complete complement of Viton valve stem seals, oil pan gaskets, and rear main seals restore crankcase vacuum and oil retention to factory specifications.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Multi-Layer Steel (MLS) Cylinder Head Gaskets\u003c\/li\u003e\n  \u003cli\u003e1 Rear Crankshaft Main Seal\u003c\/li\u003e\n  \u003cli\u003e1 Engine Oil Pan Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Valley Cover Gasket\u003c\/li\u003e\n  \u003cli\u003eIntake Manifold Gasket Set\u003c\/li\u003e\n  \u003cli\u003eExhaust Manifold Gasket Set\u003c\/li\u003e\n  \u003cli\u003eKnock Sensor Grommets\u003c\/li\u003e\n  \u003cli\u003eDamping Plug Heads\u003c\/li\u003e\n  \u003cli\u003eViton Valve Stem Seals\u003c\/li\u003e\n  \u003cli\u003eFiber Base Plates\u003c\/li\u003e\n  \u003cli\u003eAssorted O-Rings and Ancillary Sealing Washers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2002-2011 Chevrolet Silverado\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.8L (LR4, LY2, L20), 5.3L (LM7, L59, LM4, L33, LY5, LMG, LC9, LH6) \/ GMT800, GMT900\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e270-315 hp \/ 285-338 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eCS9284, HS26191PT, HS26190PT-2, HS26191PT-1, HGS3168, ES72220, GS33449, HSGM10448L, LGS3165, MIS16340\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002-2011 Chevrolet Silverado 1500 4.8L V8 OHV\u003c\/li\u003e\n  \u003cli\u003e2002-2011 Chevrolet Silverado 1500 5.3L V8 OHV\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT800 and GMT900 Silverado?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2002-2011 Chevrolet Silverado equipped with the \u003cstrong\u003eVortec 4.8L\u003c\/strong\u003e and \u003cstrong\u003eVortec 5.3L\u003c\/strong\u003e V8 engines. \u003cstrong\u003eThis kit does not fit 6.0L, 6.2L, or big-block applications, and does not include replacement piston rings.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre head bolts included with this gasket set?\u003c\/h4\u003e\n\u003cp\u003eNo, cylinder head bolts are torque-to-yield (TTY) single-use fasteners on GM LS-based engines and must be purchased separately prior to reassembly.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Durability Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned for demanding truck duty cycles, this overhaul sealing kit delivers the high-tensile resilience required to maintain full compression when towing, hauling, or enduring prolonged high-heat highway operations.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551495913720,"sku":"DS-EYQUEVZPD","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-head-gasket-kit-for-chevrolet-silverado-2002-2011-4-8l-5-3l-1.jpg?v=1790797546","url":"https:\/\/performancechiptuning.com\/es\/products\/performance-head-gasket-kit-for-chevrolet-silverado-2002-2011-4-8l-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}