{"product_id":"mahle-hs54580-without-head-gasket-2001-2004-gm-6-6l-duramax-lb7","title":"MAHLE HS54580 (Without Head Gasket) | 2001–2004 GM 6.6L Duramax LB7","description":"\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:4104ad87-a21a-4ce6-876e-58aaf6898192-2\" data-testid=\"conversation-turn-6\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\r\\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\r\\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\r\\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\r\\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"39adb6ce-31ab-497e-b6fe-404c4769f40b\" data-message-model-slug=\"gpt-5-5\" data-turn-start-message=\"true\"\u003e\r\\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\r\\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\r\\n\u003cp data-start=\"24\" data-end=\"310\"\u003eThe \u003cstrong data-start=\"28\" data-end=\"54\"\u003eMAHLE HS54580 Head Set\u003c\/strong\u003e delivers a reliable sealing solution for 2001–2004 GM 6.6L Duramax LB7 engines. This premium upper engine gasket kit includes the seals, O-rings, RTV, and top-end gaskets needed for cylinder head service, leak repairs, and complete upper engine resealing.\u003c\/p\u003e\r\\n\u003cp data-start=\"312\" data-end=\"603\"\u003eMAHLE designs these gaskets to meet or exceed OEM standards. As a result, you get precise fitment, dependable sealing, and long-lasting durability in high-heat diesel applications. The kit also features quality intake and exhaust manifold gaskets built to handle demanding engine conditions.\u003c\/p\u003e\r\\n\u003cp data-start=\"605\" data-end=\"871\"\u003eWhether you are completing a stock rebuild or repairing a leaking top end, the HS54580 provides the components needed for a professional repair. In addition, MAHLE’s reputation for quality makes this kit a trusted choice among diesel technicians and engine builders.\u003c\/p\u003e\r\\n\u003cp data-start=\"873\" data-end=\"985\"\u003ePlease note: this kit does \u003cstrong data-start=\"900\" data-end=\"907\"\u003enot\u003c\/strong\u003e include head gaskets or head bolts. Those items must be purchased separately.\u003c\/p\u003e\r\\n\r\\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"987\" data-end=\"999\"\u003eFeatures\u003c\/h3\u003e\r\\n\u003cul data-start=\"1000\" data-end=\"1351\"\u003e\r\\n \t\u003cli data-section-id=\"1v2h6oc\" data-start=\"1000\" data-end=\"1044\"\u003eFits 2001–2004 GM 6.6L Duramax LB7 engines\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"880jyj\" data-start=\"1045\" data-end=\"1101\"\u003eIncludes upper engine gaskets, seals, O-rings, and RTV\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"11idtwq\" data-start=\"1102\" data-end=\"1152\"\u003eDelivers OEM-quality fit and sealing performance\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"l87fu7\" data-start=\"1153\" data-end=\"1201\"\u003eHandles high heat and pressure with confidence\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"rfwm8o\" data-start=\"1202\" data-end=\"1250\"\u003eIdeal for resealing and top-end engine repairs\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"3imamb\" data-start=\"1251\" data-end=\"1305\"\u003eManufactured by trusted diesel gasket supplier MAHLE\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"1vv2sal\" data-start=\"1306\" data-end=\"1351\"\u003eHead gaskets and head bolts sold separately\u003c\/li\u003e\r\\n\u003c\/ul\u003e\r\\n\u003ch3 data-section-id=\"6xec53\" data-start=\"1353\" data-end=\"1372\"\u003eVehicle Fitment\u003c\/h3\u003e\r\\n\u003cul data-start=\"1373\" data-end=\"1637\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\r\\n \t\u003cli data-section-id=\"187g6sm\" data-start=\"1373\" data-end=\"1437\"\u003e2001 Chevy\/GMC Silverado \u0026amp; Sierra 2500HD\/3500 6.6L Duramax LB7\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"pp1a91\" data-start=\"1438\" data-end=\"1502\"\u003e2002 Chevy\/GMC Silverado \u0026amp; Sierra 2500HD\/3500 6.6L Duramax LB7\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"1snwa5g\" data-start=\"1503\" data-end=\"1567\"\u003e2003 Chevy\/GMC Silverado \u0026amp; Sierra 2500HD\/3500 6.6L Duramax LB7\u003c\/li\u003e\r\\n \t\u003cli data-section-id=\"1qkak9j\" data-start=\"1568\" data-end=\"1637\" data-is-last-node=\"\"\u003e2004 Chevy\/GMC Silverado \u0026amp; Sierra 2500HD\/3500 6.6L Duramax LB7 only\u003c\/li\u003e\r\\n\u003c\/ul\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003c\/div\u003e\r\\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\r\\n\u003cdiv class=\"text-center\"\u003e\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/div\u003e\r\\n\u003c\/section\u003e\r\\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e\u003c\/div\u003e","brand":"Sidepiece Motorsports","offers":[{"title":"Default Title","offer_id":45356832030806,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/sidepiecemotorsports.com\/products\/mahle-hs54580-without-head-gasket-2001-2004-gm-6-6l-duramax-lb7","provider":"Sidepiece Motorsports","version":"1.0","type":"link"}