{"product_id":"performance-head-gasket-kit-for-gmc-savana-2004-2008-4-8l-5-3l","title":"Performance Head Gasket Kit for GMC Savana (2004-2008) 4.8L 5.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eMulti-Layer Steel Engine Overhaul Head Gasket Set for 2004-2008 GMC Savana (GMT610)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Head Gasket Kit replaces degraded factory seals on the 2004-2008 GMC Savana to eliminate combustion blow-by, prevent oil-coolant cross-contamination, and maintain cylinder pressure under severe duty cycles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Savana Sealing Limitations\u003c\/h3\u003e\n\u003cp\u003eThe 4.8L and 5.3L Vortec platforms installed in the \u003cstrong\u003eGMT610\u003c\/strong\u003e Savana endure demanding fleet cycles, extended idling, and high-heat hauling. Factory graphite or composite head gaskets are susceptible to bore fatigue and micro-scrubbing caused by differing expansion rates between cast-iron blocks and aluminum cylinder heads. Over time, severe thermal cycling degrades the OEM fire rings and oil seals, triggering coolant loss into cylinders, valley cover leaks, and rear main seal seepage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis master engine overhaul set features Multi-Layer Steel (\u003cstrong\u003eMLS\u003c\/strong\u003e) head gaskets built to absorb lateral thermal shear while maintaining combustion sealing under extreme cylinder pressures. Embossed viton-coated outer layers provide micro-sealing against minor block or head surface irregularities. Complete with high-temperature fluoroelastomer valve stem seals and reinforced intake and exhaust manifold gaskets, this kit delivers a high-integrity, leak-free mechanical seal that resists high-temperature degradation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Multi-Layer Steel (MLS) Head Gaskets\u003c\/li\u003e\n  \u003cli\u003e1 Rear Crankshaft Gasket 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 Gaskets\u003c\/li\u003e\n  \u003cli\u003eExhaust Manifold Gaskets\u003c\/li\u003e\n  \u003cli\u003eKnock Sensor Grommets\u003c\/li\u003e\n  \u003cli\u003eDamping Plug Heads\u003c\/li\u003e\n  \u003cli\u003eValve Stem Seals\u003c\/li\u003e\n  \u003cli\u003eFiber Base Plates\u003c\/li\u003e\n  \u003cli\u003eAssorted O-Rings and Ancillary Gaskets\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: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2004-2008 GMC Savana\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) \/ 5.3L (LM7\/LMF) \/ GMT610\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;\"\u003e275-295 hp \/ 290-335 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\u003e2004-2008 GMC Savana 1500 (4.8L \/ 5.3L V8)\u003c\/li\u003e\n  \u003cli\u003e2004-2008 GMC Savana 2500 (4.8L \/ 5.3L V8)\u003c\/li\u003e\n  \u003cli\u003e2004-2008 GMC Savana 3500 (4.8L V8)\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 GMT610 Savana?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2008 GMC Savana equipped with the \u003cstrong\u003eLR4\u003c\/strong\u003e (4.8L) or \u003cstrong\u003eLM7\u003c\/strong\u003e\/\u003cstrong\u003eLMF\u003c\/strong\u003e (5.3L) Small Block V8 engine. \u003cstrong\u003eNote: Piston rings and head bolts are not included in this kit and must be purchased separately.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre cylinder head bolts reusable on these engines?\u003c\/h4\u003e\n\u003cp\u003eNo, the GM Gen III\/IV V8 engines use Torque-to-Yield (TTY) head bolts that stretch permanently upon initial torquing and must be replaced during reassembly.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Commercial Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-mileage commercial fleets and heavy-duty towing applications, this full gasket overhaul ensures maximum fluid containment and reliability under demanding payload conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551501811960,"sku":"DS-E12W6438R","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-gmc-savana-2004-2008-4-8l-5-3l-1.jpg?v=1790797756","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-head-gasket-kit-for-gmc-savana-2004-2008-4-8l-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}