









2001-2004 Duramax Cylinder Head (One) Cast Iron (110100111)
Description
Fits
| Year | Make | Model | Engine |
|---|---|---|---|
| 2001-2004 | GM | Silverado/Sierra 2500/3500 HD | 6.6L |
The factory cast-aluminum Duramax heads blow gaskets and warp in high-performance applications because the differing expansion rates between the aluminum head and iron block scrub the head gasket over time. PPE's ported cast-iron replacement heads eliminate that thermal mismatch and are built for builds that repeatedly push past OEM heat limits.
Manufacturer Description
The OEM Duramax cast-aluminum cylinder heads fall short over time - the differing heat expansion rates between the cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and/or cracking in high-performance applications where excessive heat is introduced.
PPE's new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for your Duramax engine, eliminating any concerns about head gaskets or cracking. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers superior fatigue strength, heat resistance, and creep resistance, significantly prolonging its lifespan.
The cast-iron material also shares the same heat expansion rate as the stock engine block, eliminating blown head gaskets. Additionally, the PPE Cylinder Head features cast-in fuel injector cups, solving the OEM injector cup leaking issue.
Our CNC porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability.
Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or seek better reliability and longevity for your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.
Important Note:
Original: $1,340.61
-65%$1,340.61
$469.21Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description
Fits
| Year | Make | Model | Engine |
|---|---|---|---|
| 2001-2004 | GM | Silverado/Sierra 2500/3500 HD | 6.6L |
The factory cast-aluminum Duramax heads blow gaskets and warp in high-performance applications because the differing expansion rates between the aluminum head and iron block scrub the head gasket over time. PPE's ported cast-iron replacement heads eliminate that thermal mismatch and are built for builds that repeatedly push past OEM heat limits.
Manufacturer Description
The OEM Duramax cast-aluminum cylinder heads fall short over time - the differing heat expansion rates between the cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and/or cracking in high-performance applications where excessive heat is introduced.
PPE's new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for your Duramax engine, eliminating any concerns about head gaskets or cracking. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers superior fatigue strength, heat resistance, and creep resistance, significantly prolonging its lifespan.
The cast-iron material also shares the same heat expansion rate as the stock engine block, eliminating blown head gaskets. Additionally, the PPE Cylinder Head features cast-in fuel injector cups, solving the OEM injector cup leaking issue.
Our CNC porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability.
Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or seek better reliability and longevity for your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.
Important Note:












