2003-2007 Cummins Stage 1 Cummins Performance Head (DJPCH100026)

Fits

This CR Stage 1 Cummins Performance Head is a step up in performance without the extra expense and work involved with an aftermarket intake. Featuring 105 pound valve springs, 5 axis port job while retaining the factory intake plenum. This increases the flow on the intake from around 155 CFM stock to 220 CFM, additionally; low end performance, decreases boost pressure and lowers EGT's, increasing the amount of fuel you can burn and make more power. 

Part Number: DJPCH100026

• Head is disassembled and all soft plugs are removed
• Cleaned and blasted
• Crack check performed
• All new bronze guides are installed
• Heavy Duty extra large seats placed in intake and exhaust side
• 5 axis CNC port with stock intake shelf in place
• High performance valve job performed
• Resurfaced
• Cleaned
• Painted
• Assembled with all new valve seals, soft plugs and HD springs
• Valves and Coolant Passages are pressure checked
• 23% flow increase

Cores must be good with no cracks must be a rebuildable core. D&J Precision will inspect your core on arrival and determine if it is a good core.