Cylinder Head (One) Cast Iron LB7 Ported

Upgrade your 2001-2004 GM 6.6L Duramax LB7 with PPE's Ported Cast Iron Cylinder Heads for superior durability and performance. OEM cast-aluminum cylinder heads can fail due to mismatched heat expansion rates with the cast-iron block, leading to head gasket issues, warping, or cracking. These PPE cast iron heads, made from high-quality alloyed gray iron, eliminate these problems by matching the heat expansion rate of the engine block. They offer superior fatigue strength, heat resistance, and creep resistance. Cast-in fuel injector cups prevent OEM injector cup leaking. CNC porting improves airflow, enhancing power, fuel efficiency, throttle response, and reducing turbo lag. Each head is tailored for consistent, optimized airflow dynamics. Sold individually with a 3-year unlimited mileage warranty.