{"product_id":"billet-aluminum-valve-cover-for-2004-5-2010-gm-6-6l-duramax-spelab","title":"Billet Aluminum Valve Cover for 2004.5-2010 GM LLY LBZ LMM Chevrolet\/GMC 2500HD 3500HD 6.6L Duramax | SPELAB","description":"\u003cp\u003e---tab Description---\u003c\/p\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eWhen you are pushing serious horsepower or building a show-quality truck, the factory cast aluminum valve covers just don't cut it. Under extreme heat and high-boost conditions, stock covers are notorious for warping and leaking.\u003c\/p\u003e\n\u003cp\u003eThe SPELAB Billet Aluminum Valve Cover is engineered specifically for \u003cstrong\u003e2004.5–2010 GM 6.6L Duramax (LLY, LBZ, LMM)\u003c\/strong\u003e performance builds. Boasting a massive \u003cstrong\u003e19.5mm thickness\u003c\/strong\u003e, this CNC-machined masterpiece provides absolute rigidity and an unbreakable seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe \"Shaved\" Advantage:\u003c\/strong\u003e\u003cbr\u003eWe designed this cover with a sleek, shaved profile, intentionally omitting the bulky factory standoffs. This makes it the ultimate upgrade for trucks running aftermarket fuel systems (like FASS or AirDog) that have deleted the factory fuel filter housing. It eliminates the clutter, giving your Duramax that ultra-clean, custom-built look while offering versatile PCV routing options.\u003c\/p\u003e\n\u003ch3\u003eFitments\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e2004.5–2010 GM LLY LBZ LMM Chevrolet\/GMC 2500HD 3500HD 6.6L Duramax Diesel Engines\u003cbr\u003e\u003cem\u003eNote: Ideal for trucks utilizing aftermarket lift pumps (FASS\/AirDog) with the factory fuel filter housing removed.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMassive 19.5mm Billet Profile\u003c\/strong\u003e\u003cbr\u003eMachined from a solid block of aerospace-grade aluminum. Zero flex, zero warping, and a perfect mating surface that cures chronic high-pressure oil leaks common in high-horsepower applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShaved \"Show-Truck\" Design\u003c\/strong\u003e\u003cbr\u003eA smooth, streamlined exterior without the ugly factory bracket standoffs. Perfect for trucks with relocated or aftermarket fuel filters, providing a much cleaner, aggressive engine bay aesthetic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCustomizable PCV Routing\u003c\/strong\u003e\u003cbr\u003eEquipped with dual fittings for total PCV flexibility. Allows you to easily run a custom reroute or connect to an external catch-can system, keeping oil vapor out of your turbo and intake.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Thermal Capacity\u003c\/strong\u003e\u003cbr\u003eBillet aluminum dissipates extreme engine heat far more efficiently than the porous factory cast covers, protecting your top-end components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePremium Anodized Finish\u003c\/strong\u003e\u003cbr\u003eAvailable in deep Black, striking Red, or classic Silver. Resists corrosion, oil stains, and fading, ensuring your engine looks as good as it performs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 117.563px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.574%; height: 39.1875px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"width: 66.065%; height: 39.1875px;\"\u003eCNC-Machined Billet Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.574%; height: 19.5938px;\"\u003eThickness\u003c\/td\u003e\n\u003ctd style=\"width: 66.065%; height: 19.5938px;\"\u003e19.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.574%; height: 19.5938px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"width: 66.065%; height: 19.5938px;\"\u003e6.19 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.574%; height: 19.5938px;\"\u003eInstallation Location\u003c\/td\u003e\n\u003ctd style=\"width: 66.065%; height: 19.5938px;\"\u003eEngine top – replaces factory valve cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.574%; height: 19.5938px;\"\u003ePCV System\u003c\/td\u003e\n\u003ctd style=\"width: 66.065%; height: 19.5938px;\"\u003e Dual Ports (Ready for Catch Can \/ Reroute)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e---tab FAQ---\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why upgrade to a 19.5mm thick billet cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e High-boost, tuned Duramax engines create immense internal pressures and heat. The massive 19.5mm thickness ensures the cover will never warp, flex, or lose its seal under extreme conditions, something stock cast covers struggle with.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this an ideal upgrade if I have a FASS or AirDog fuel system?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. Because aftermarket lift pumps allow you to delete the bulky factory fuel filter, we designed this cover with a \"shaved\" profile (no factory standoffs). It cleans up the engine bay perfectly and removes unnecessary clutter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What type of gasket does this cover use?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Our billet covers are precision-machined to accept standard OEM or high-quality aftermarket rubber Duramax gaskets. This ensures you get a reliable, factory-style seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it work with aftermarket intakes?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes! In fact, it pairs perfectly with aftermarket PCV-less intake horns for the ultimate high-flow, clean-engine setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I route the PCV with this cover?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The cover features dual threaded fittings. You have the freedom to route the gases to an atmosphere dump tube or, for the best results, plumb them into a high-capacity external oil catch can.\u003c\/p\u003e\n\u003cp\u003e---tab Shipping \u0026amp; Returns---\u003c\/p\u003e\n\u003cdiv class=\"policy-container\"\u003e\n\u003cdiv class=\"policy-item\"\u003e\n\u003ch3\u003eFast Shipping Policy\u003c\/h3\u003e\n\u003cp\u003eYour order will be dispatched within \u003cstrong\u003e1-2 business days\u003c\/strong\u003e, and the package will arrive within your order's estimated date. \u003ca href=\"https:\/\/www.spelabautoparts.com\/pages\/shipping-policy\"\u003eClick for Shipping Policy\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"policy-item\"\u003e\n\u003ch3\u003eEasy Return Policy\u003c\/h3\u003e\n\u003cp\u003eEvery order comes with a \u003cstrong\u003e14-day free return\u003c\/strong\u003e, which means you don't have to pay for a return slip. \u003ca href=\"https:\/\/www.spelabautoparts.com\/pages\/refund-policy\"\u003eClick for Return Policy\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SPELAB","offers":[{"title":"Black \/ None","offer_id":47525004083451,"sku":"SPENS16-00127BK-001-L","price":299.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Black","offer_id":47656817590523,"sku":"SPENS16-00127BK-001-L-FS01299BK-SP","price":389.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ None","offer_id":47525004116219,"sku":"SPENS16-00127RD-001-L","price":299.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ Black","offer_id":47656817623291,"sku":"SPENS16-00127RD-001-L-FS01299BK-SP","price":389.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ None","offer_id":47525004148987,"sku":"SPENS16-00127SR-001-L","price":299.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Black","offer_id":47656817656059,"sku":"SPENS16-00127SR-001-L-FS01299BK-SP","price":389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/0609\/9556\/files\/01-ENS16-00127BK-001-L.jpg?v=1757920508","url":"https:\/\/www.spelabautoparts.com\/products\/billet-aluminum-valve-cover-for-2004-5-2010-gm-6-6l-duramax-spelab","provider":"SPELAB","version":"1.0","type":"link"}