{"title":"LLY Duramax Head Gaskets","description":"\u003cp\u003eDirect-fit head gaskets for the LLY Duramax diesel. Every part here is matched to the LLY Duramax platform — confirm your model year before ordering to be sure of fitment. Orders ship fast, free over $70.\u003c\/p\u003e","products":[{"product_id":"lly-duramax-head-gasket-set-2004-5-2005","title":"LLY Duramax Head Gasket Set 2004.5-2005","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a diesel head gasket set for the Chevrolet, GMC LLY Duramax diesel (2004.5-2005). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade LLY Duramax repair or service. Every order ships fast and is backed by our support team.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion pressure, coolant and oil between the block and cylinder head — the hardest-working seal in the engine. Under the extreme cylinder pressures of a turbo diesel it can fail and let coolant and combustion gases cross over, producing overheating, white exhaust, coolant loss and oil\/coolant intermixing. A fresh, correct-thickness head gasket set restores a proper combustion and cooling seal and is the foundation of any head job or rebuild. Fresh head studs or bolts are strongly recommended alongside it.\u003c\/p\u003e\u003ch4\u003eWhat's Included\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ehead gasket(s) matched to the engine\u003c\/li\u003e\n\u003cli\u003erelated head-set sealing components where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eFits Chevrolet, GMC trucks equipped with the LLY Duramax diesel engine, 2004.5-2005. Please confirm your engine and year before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms \u0026amp; When to Use\u003c\/h4\u003e\u003cp\u003eConsider this LLY Duramax part when you experience:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ecoolant loss or oil and coolant intermixing\u003c\/li\u003e\n\u003cli\u003ewhite exhaust smoke and overheating\u003c\/li\u003e\n\u003cli\u003ea combustion leak or failed head gasket\u003c\/li\u003e\n\u003cli\u003ea head gasket job or rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e LLY Duramax\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear Range:\u003c\/strong\u003e 2004.5-2005\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eQuality \u0026amp; Service\u003c\/h4\u003e\u003cp\u003eFast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LLY Duramax diesel parts.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":48812282937569,"sku":"CDP-HG-lly-duramax-01","price":225.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/lly-duramax-head-gasket-set-2004-5-2005-1.jpg?v=1784997343"},{"product_id":"lly-duramax-head-gasket-set-2004-5-2007","title":"LLY Duramax Head Gasket Set 2004.5-2007","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a diesel head gasket set for the Chevrolet, GMC LLY Duramax diesel (2004.5-2007). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade LLY Duramax repair or service. Every order ships fast and is backed by our support team.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion pressure, coolant and oil between the block and cylinder head — the hardest-working seal in the engine. Under the extreme cylinder pressures of a turbo diesel it can fail and let coolant and combustion gases cross over, producing overheating, white exhaust, coolant loss and oil\/coolant intermixing. A fresh, correct-thickness head gasket set restores a proper combustion and cooling seal and is the foundation of any head job or rebuild. Fresh head studs or bolts are strongly recommended alongside it.\u003c\/p\u003e\u003ch4\u003eWhat's Included\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ehead gasket(s) matched to the engine\u003c\/li\u003e\n\u003cli\u003erelated head-set sealing components where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eFits Chevrolet, GMC trucks equipped with the LLY Duramax diesel engine, 2004.5-2007. Please confirm your engine and year before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms \u0026amp; When to Use\u003c\/h4\u003e\u003cp\u003eConsider this LLY Duramax part when you experience:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ecoolant loss or oil and coolant intermixing\u003c\/li\u003e\n\u003cli\u003ewhite exhaust smoke and overheating\u003c\/li\u003e\n\u003cli\u003ea combustion leak or failed head gasket\u003c\/li\u003e\n\u003cli\u003ea head gasket job or rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e LLY Duramax\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear Range:\u003c\/strong\u003e 2004.5-2007\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eQuality \u0026amp; Service\u003c\/h4\u003e\u003cp\u003eFast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LLY Duramax diesel parts.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":48895814402273,"sku":"CDP-HG-lly-duramax-02","price":1385.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/lly-duramax-head-gasket-set-2004-5-2007-1.jpg?v=1786365399"},{"product_id":"lly-duramax-head-gasket-set-2004-5-2007-arp","title":"LLY Duramax Head Gasket Set 2004.5-2007 - ARP","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a diesel head gasket set for the Chevrolet, GMC LLY Duramax diesel (2004.5-2007). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade LLY Duramax repair or service. Every order ships fast and is backed by our support team.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion pressure, coolant and oil between the block and cylinder head — the hardest-working seal in the engine. Under the extreme cylinder pressures of a turbo diesel it can fail and let coolant and combustion gases cross over, producing overheating, white exhaust, coolant loss and oil\/coolant intermixing. A fresh, correct-thickness head gasket set restores a proper combustion and cooling seal and is the foundation of any head job or rebuild. Fresh head studs or bolts are strongly recommended alongside it.\u003c\/p\u003e\u003ch4\u003eWhat's Included\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ehead gasket(s) matched to the engine\u003c\/li\u003e\n\u003cli\u003erelated head-set sealing components where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eFits Chevrolet, GMC trucks equipped with the LLY Duramax diesel engine, 2004.5-2007. Please confirm your engine and year before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms \u0026amp; When to Use\u003c\/h4\u003e\u003cp\u003eConsider this LLY Duramax part when you experience:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ecoolant loss or oil and coolant intermixing\u003c\/li\u003e\n\u003cli\u003ewhite exhaust smoke and overheating\u003c\/li\u003e\n\u003cli\u003ea combustion leak or failed head gasket\u003c\/li\u003e\n\u003cli\u003ea head gasket job or rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e LLY Duramax\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear Range:\u003c\/strong\u003e 2004.5-2007\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eQuality \u0026amp; Service\u003c\/h4\u003e\u003cp\u003eFast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LLY Duramax diesel parts.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":48895814533345,"sku":"CDP-HG-lly-duramax-03","price":1900.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/lly-duramax-head-gasket-set-2004-5-2007-1_b51b781b-08fb-4725-8c5e-38c6d51fb9de.jpg?v=1786365404"},{"product_id":"lly-duramax-head-gasket-set-2004-5-2006","title":"LLY Duramax Head Gasket Set 2004.5-2006","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a diesel head gasket set for the Chevrolet, GMC LLY Duramax diesel (2004.5-2006). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade LLY Duramax repair or service. Every order ships fast and is backed by our support team.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion pressure, coolant and oil between the block and cylinder head — the hardest-working seal in the engine. Under the extreme cylinder pressures of a turbo diesel it can fail and let coolant and combustion gases cross over, producing overheating, white exhaust, coolant loss and oil\/coolant intermixing. A fresh, correct-thickness head gasket set restores a proper combustion and cooling seal and is the foundation of any head job or rebuild. Fresh head studs or bolts are strongly recommended alongside it.\u003c\/p\u003e\u003ch4\u003eWhat's Included\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ehead gasket(s) matched to the engine\u003c\/li\u003e\n\u003cli\u003erelated head-set sealing components where applicable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eFits Chevrolet, GMC trucks equipped with the LLY Duramax diesel engine, 2004.5-2006. Please confirm your engine and year before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms \u0026amp; When to Use\u003c\/h4\u003e\u003cp\u003eConsider this LLY Duramax part when you experience:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ecoolant loss or oil and coolant intermixing\u003c\/li\u003e\n\u003cli\u003ewhite exhaust smoke and overheating\u003c\/li\u003e\n\u003cli\u003ea combustion leak or failed head gasket\u003c\/li\u003e\n\u003cli\u003ea head gasket job or rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e LLY Duramax\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYear Range:\u003c\/strong\u003e 2004.5-2006\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eQuality \u0026amp; Service\u003c\/h4\u003e\u003cp\u003eFast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LLY Duramax diesel parts.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":48895814664417,"sku":"CDP-HG-lly-duramax-04","price":737.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/lly-duramax-head-gasket-set-2004-5-2006-1.jpg?v=1786365410"},{"product_id":"lly-duramax-head-gasket","title":"LLY Duramax Head Gasket - New Direct-Fit Diesel Replacement","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a direct-fit head gasket for the LLY Duramax diesel. It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion, coolant, and oil between the block and cylinder head. When it fails you get white smoke, coolant loss, overheating, and oil-coolant mixing. A quality gasket set restores a sealed, reliable engine.\u003c\/p\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eConfirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.\u003c\/p\u003e\u003ch4\u003eOrdering \u0026amp; Shipping\u003c\/h4\u003e\u003cp\u003eThis part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":49029550342369,"sku":"CDP-HEAD-264818","price":552.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/s-l1600_85697aae-2694-478a-9a43-b39c0876266d.jpg?v=1788475983"},{"product_id":"lly-duramax-head-gasket-2005-10","title":"LLY Duramax Head Gasket 2005-10 - New Direct-Fit Diesel Replacement","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a direct-fit head gasket for the LLY Duramax diesel (2005-10). It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion, coolant, and oil between the block and cylinder head. When it fails you get white smoke, coolant loss, overheating, and oil-coolant mixing. A quality gasket set restores a sealed, reliable engine.\u003c\/p\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eConfirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.\u003c\/p\u003e\u003ch4\u003eOrdering \u0026amp; Shipping\u003c\/h4\u003e\u003cp\u003eThis part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":49029560664289,"sku":"CDP-HEAD-441283","price":389.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/s-l1600_7a105973-591c-44cb-90ca-ed62fb6debf7.jpg?v=1788475989"},{"product_id":"lly-duramax-head-gasket-2004-2010","title":"LLY Duramax Head Gasket 2004-2010 - New Direct-Fit Diesel Replacement","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a direct-fit head gasket for the LLY Duramax diesel (2004-2010). It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion, coolant, and oil between the block and cylinder head. When it fails you get white smoke, coolant loss, overheating, and oil-coolant mixing. A quality gasket set restores a sealed, reliable engine.\u003c\/p\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eConfirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.\u003c\/p\u003e\u003ch4\u003eOrdering \u0026amp; Shipping\u003c\/h4\u003e\u003cp\u003eThis part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":49029564629217,"sku":"CDP-HEAD-911393","price":458.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/s-l1600_c601ffa2-6ed6-4ab5-93e1-65f4d32fd7d7.jpg?v=1788475997"},{"product_id":"lly-duramax-head-gasket-new-direct-fit-diesel-replacement","title":"LLY Duramax Head Gasket - New Direct-Fit Diesel Replacement","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a direct-fit head gasket for the LLY Duramax diesel. It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion, coolant, and oil between the block and cylinder head. When it fails you get white smoke, coolant loss, overheating, and oil-coolant mixing. A quality gasket set restores a sealed, reliable engine.\u003c\/p\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eConfirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.\u003c\/p\u003e\u003ch4\u003eOrdering \u0026amp; Shipping\u003c\/h4\u003e\u003cp\u003eThis part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":49035379966177,"sku":"CDP-HEAD-405187","price":358.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/s-l1600_ff8996c8-0745-4e87-a900-6e84b1f9bbad.jpg?v=1788586542"},{"product_id":"lly-duramax-head-gasket-new-direct-fit-diesel-replacement-1","title":"LLY Duramax Head Gasket - New Direct-Fit Diesel Replacement","description":"\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis is a direct-fit head gasket for the LLY Duramax diesel. It is a quality new, direct-fit replacement built to OEM-equivalent specification for a professional-grade repair that restores proper function and reliability to your truck.\u003c\/p\u003e\u003ch4\u003eWhat It Does \u0026amp; How It Helps\u003c\/h4\u003e\u003cp\u003eThe head gasket seals combustion, coolant, and oil between the block and cylinder head. When it fails you get white smoke, coolant loss, overheating, and oil-coolant mixing. A quality gasket set restores a sealed, reliable engine.\u003c\/p\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eConfirm your engine and model year before ordering. Not sure it fits? Email sales@coredieselparts.com with your VIN or engine and year and we will confirm the correct unit.\u003c\/p\u003e\u003ch4\u003eOrdering \u0026amp; Shipping\u003c\/h4\u003e\u003cp\u003eThis part is made to order and typically ships within 2–5 business days. Orders ship fast with tracking. Questions about fitment or your order? Email sales@coredieselparts.com and we are happy to help.\u003c\/p\u003e","brand":"CoreDieselParts.com","offers":[{"title":"Default Title","offer_id":49043739214049,"sku":"CDP-HEAD-010865","price":332.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/6593\/4817\/files\/s-l1600_05df53a5-22cc-4ab6-b40b-993fe23b5bde.jpg?v=1788703478"}],"url":"https:\/\/www.coredieselparts.com\/collections\/lly-duramax-head-gaskets.oembed","provider":"CoreDieselParts.com","version":"1.0","type":"link"}