2004.5-2010 Duramax LLY/LBZ/LMM PPE Cylinder Head (One) Cast Iron (110100113)
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.
- Specially alloyed gray cast iron liquid-cooled cylinder head
- 5-Axis CNC ported intake and exhaust ports for smooth, unrestricted airflow
- Increased thermal efficiency compared to aluminum heads
- Reduced noise and vibration, better ride
- Eliminates head gasket scrubbing issue (blown head gasket)
- Higher fatigue strength and heat resistance
- Premium 21-4N, Stellite-reinforced exhaust valves
- Fully nitridated valves, better abrasion resistance
- Ready to install - comes with all valvetrain components, rocker arm dowels, and freeze plugs
GM Duramax
2004.5-2010 LLY/LBZ/LMM
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