Shop with Blessed Performance for the PPE Cast Iron Cylinder Head for 2004.5 to 2010 6.6L Duramax diesel pickups.
HIGHLIGHTS:
- Specially alloyed gray cast iron liquid-cooled cylinder head with elevated strength in high temperatures and creep resistance
- Cast iron cylinder head offers the same heat expansion rate as the OEM iron block which completely resolves the common head gasket scrubbing issue (blown head gasket)
- Fuel injector cups are cast in the cylinder head, eliminating leaks caused by the original fuel injector cup seals
- Higher fatigue strength and heat resistance significantly extends cylinder head lifespan
- Premium 21-4N, Stellite-reinforced exhaust valves, and chrome-silicon alloy intake valves
- All valves are fully nitridated with increased abrasion resistance
- High-strength Chromoly steel CNC machined spring retainers and spring locators
- Upgraded tapered valve springs provide faster response and eliminate valve float at high RPMs
- Powdered metal valve seats offer superior wear and heat resistance
- Each head comes complete with BRAND NEW springs, spring retainers, spring locators, valves, valve seals, valve keepers, valve seats, valve guides, rocker arm dowels, and freeze plugs
- Significantly reduced diesel engine clatter compared to the factory aluminum cylinder heads
- Increased thermal efficiency compared to aluminum heads
- 3-Year Unlimited Mileage Warranty