{"product_id":"fleece-performance-lb7-duramax-cylinder-head-with-cupless-injector-bore-driver-side","title":"Fleece Performance LB7 Duramax Cylinder Head with Cupless Injector Bore – Driver Side","description":"ALL NEW! Freedom Series cylinder heads for the LB7 6.6L Duramax now with a cupless injector bore - save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valves, valve guides, springs, and valve seals. Perfect for the daily driver or towing application. Features Cupless injector bore - no injector cups to leak again ever! New aluminum casting New valves, valve guides, new springs, and new valve seals Pressure and leak tested Precision ground valves with a 45 degree angle CNC cut, multi-angle valve job Installation Notes We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)\nFreedom Series Duramax Cylinder Head with Cupless Injector Bore for 2001-2004 LB7 (Driver Side)\nRecommended Cross Sell Skus - FPE-BRAB-D1\/FPE-DUR-S2-PROD\/FPE-LB7-63\n\u003cul\u003e\n  \u003cli\u003eCupless injector bore - no injector cups to leak again ever!\u003c\/li\u003e\n  \u003cli\u003eNew valves, valve guides, new springs, and new valve seals\u003c\/li\u003e\n  \u003cli\u003ePrecision ground valves with a 45 degree angle\u003c\/li\u003e\n  \u003cli\u003ePressure and leak tested\u003c\/li\u003e\n  \u003cli\u003eNew aluminum casting\u003c\/li\u003e\n  \u003cli\u003eCNC cut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your 2001-2004 LB7 Duramax engine with the Fleece Performance Freedom Series Cylinder Head, designed for enhanced durability and performance. This cylinder head features a new aluminum casting, meticulously assembled in our state-of-the-art shop, ensuring it meets or exceeds factory specifications. Each unit is pressure and leak tested, and equipped with new valves, valve guides, springs, and valve seals for reliable operation. The innovative cupless injector bore eliminates the need for injector cups, providing a permanent seal that prevents leaks and simplifies installation, saving both time and money. This design is perfect for daily drivers and towing applications, offering enhanced reliability and efficiency.\u003c\/p\u003e \u003cp\u003eThe CNC cut, precision-ground valves with a 45-degree multi-angle valve job ensure optimal airflow and combustion efficiency. Use recommended gaskets GM 12637788 (Right) and GM 12637785 (Left) for proper sealing during installation. This cylinder head is not CARB approved but is manufactured to high standards for performance and longevity. Its robust construction and rigorous testing make it a reliable choice for serious Duramax enthusiasts looking to improve engine performance while reducing maintenance concerns related to injector cup leaks.\u003c\/p\u003e \u003cp\u003eWhether you're rebuilding your engine or enhancing its performance, the Fleece Performance LB7 cylinder head offers a cost-effective, durable, and innovative solution. Designed specifically for the LB7 model, it provides a seamless upgrade path with proven quality and craftsmanship. Trust in Fleece Performance’s commitment to high-quality automotive components to deliver a product that meets your engine’s demands and keeps your Duramax running smoothly for years to come.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eCupless injector bore eliminates injector cups, preventing leaks forever\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNew valves, valve guides, springs, and valve seals for reliable operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision ground valves with a 45-degree multi-angle valve job for optimal airflow\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePressure and leak tested for quality assurance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed from new aluminum casting and CNC machined for precision\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":53602386575633,"sku":"FPE-61-10001-D-CL","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/ee2fb9326e53952068deba1506a1da6c.jpg?v=1779939766","url":"https:\/\/shoprenegade.com\/products\/fleece-performance-lb7-duramax-cylinder-head-with-cupless-injector-bore-driver-side","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}