Fleece Performance LB7 Duramax Cylinder Head with Cupless Injector Bore – Driver Side

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) Freedom Series Duramax Cylinder Head with Cupless Injector Bore for 2001-2004 LB7 (Driver Side) Recommended Cross Sell Skus - FPE-BRAB-D1/FPE-DUR-S2-PROD/FPE-LB7-63

• Cupless injector bore - no injector cups to leak again ever!
• New valves, valve guides, new springs, and new valve seals
• Precision ground valves with a 45 degree angle
• Pressure and leak tested
• New aluminum casting
• CNC cut

Upgrade 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.

The 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.

Whether 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.

Features:

• Cupless injector bore eliminates injector cups, preventing leaks forever

• New valves, valve guides, springs, and valve seals for reliable operation

• Precision ground valves with a 45-degree multi-angle valve job for optimal airflow

• Pressure and leak tested for quality assurance

• Constructed from new aluminum casting and CNC machined for precision

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1