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
• CNC cut, multi-angle valve job

Install Instructions:

• For Instructions CLICK HERE!

Fitments:

• GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax 2001-2004

Notes:

• We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)