PPE CAST IRON PORTED CYLINDER HEAD 110100113 | 2004.5-2010 6.6L Duramax LLY/LBZ/LMM

Upgrade the reliability and performance of your GM 6.6L Duramax LLY, LBZ, or LMM with the PPE 110100113 Cast Iron Ported Cylinder Head. Designed to address the common shortcomings of the factory aluminum cylinder heads, this premium replacement combines heavy-duty cast iron construction with precision CNC porting to deliver exceptional durability, airflow, and long-term performance.

Manufactured from specially alloyed gray cast iron, this cylinder head offers superior resistance to heat, fatigue, and thermal cycling. Unlike factory aluminum heads, the PPE cylinder head expands at a similar rate to the cast iron engine block, helping eliminate head gasket scrubbing and reducing the likelihood of blown head gaskets.

Each cylinder head features precision 5-axis CNC-ported intake and exhaust runners designed to improve airflow characteristics. The enhanced port design promotes increased horsepower, improved throttle response, greater fuel efficiency, and reduced turbo lag while maintaining the durability needed for demanding applications.

Key Benefits:

• Eliminates common factory cylinder head cracking and warping concerns
• Helps prevent head gasket scrubbing and failure
• Improves airflow for increased performance and efficiency
• Provides superior durability in towing and performance applications

Features:

• Specially alloyed gray cast iron construction
• 5-axis CNC-ported intake and exhaust ports
• Fully nitrided valves for improved wear resistance
• Premium 21-4N Stellite-reinforced exhaust valves
• Increased thermal efficiency compared to aluminum heads
• Higher fatigue strength and heat resistance
• Reduced engine noise and vibration
• Liquid-cooled cylinder head design
• Includes rocker arm dowels and freeze plugs
• Ready-to-install configuration

Fitment:

• 2004.5–2005 GM 6.6L Duramax LLY
• 2006–2007 GM 6.6L Duramax LBZ
• 2007.5–2010 GM 6.6L Duramax LMM

Note:

• Sold individually. Two cylinder heads are required per engine.