Your Cart (0)
Thumbnail Filmstrip of LLY/LBZ/LMM Duramax Cast Iron Cylinder Head PPE 110100103 Images
PPE 110100103 Cast Iron Cylinder Head for 2004.5–2010 LLY/LBZ/LMM Duramax
Upgrade the durability and reliability of your 2004.5–2010 GM 6.6L Duramax with the PPE Cast Iron Cylinder Head (part #110100103). Factory aluminum heads are a well-known weak point—the mismatched heat expansion rates between the aluminum head and cast-iron block cause head gasket scrubbing that eventually leads to blown gaskets. Aluminum heads are also prone to warping, cracking, or melting under high heat or performance use.
PPE solves these issues with a specialty alloyed gray cast iron cylinder head that matches the expansion rate of the OEM iron block. The result is dramatically improved resistance to heat, fatigue, and creep, eliminating the common failure points of the stock heads while delivering longer service life and greater peace of mind.
Key Features
- Specialty alloyed gray cast iron construction for superior strength and thermal stability
- Same heat expansion rate as the Duramax iron block — no more head gasket scrubbing
- Fully assembled and ready to install
- Premium nitrided valves: chromoly-silicon alloy intake valves and 21-4N (Stellite-reinforced) exhaust valves
- Upgraded 125 lb conical/tapered valve springs with CNC-machined chromoly retainers and spring seats/locators
- Powdered metal valve seats for excellent wear and heat resistance
- Includes new valve seals, keepers, guides, rocker arm dowels, and freeze plugs
- Reduced engine clatter compared to factory aluminum heads
- Improved thermal efficiency
- 3-year unlimited mileage warranty
Fitment: 2004.5–2010 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax LLY, LBZ, or LMM engines. Fits either side of the engine. Sold individually (two required for a complete engine).
Important Notes:
- LLY engines require LBZ/LMM-style glow plugs when using these heads.
- Upgraded pushrods are recommended for best results.
- Ground shipping only on this heavy item.
Whether you’re replacing a failed factory head or building a more reliable daily driver or performance Duramax, the PPE 110100103 Cast Iron Cylinder Head is one of the strongest upgrades available.
PPE 110100103 Cast Iron Cylinder Head for 2004.5–2010 LLY/LBZ/LMM Duramax
Upgrade the durability and reliability of your 2004.5–2010 GM 6.6L Duramax with the PPE Cast Iron Cylinder Head (part #110100103). Factory aluminum heads are a well-known weak point—the mismatched heat expansion rates between the aluminum head and cast-iron block cause head gasket scrubbing that eventually leads to blown gaskets. Aluminum heads are also prone to warping, cracking, or melting under high heat or performance use.
PPE solves these issues with a specialty alloyed gray cast iron cylinder head that matches the expansion rate of the OEM iron block. The result is dramatically improved resistance to heat, fatigue, and creep, eliminating the common failure points of the stock heads while delivering longer service life and greater peace of mind.
Key Features
Specialty alloyed gray cast iron construction for superior strength and thermal stability
Same heat expansion rate as the Duramax iron block — no more head gasket scrubbing
Fully assembled and ready to install
Premium nitrided valves: chromoly-silicon alloy intake valves and 21-4N ([...]
PPE 110100103 Cast Iron Cylinder Head for 2004.5–2010 LLY/LBZ/LMM Duramax
Upgrade the durability and reliability of your 2004.5–2010 GM 6.6L Duramax with the PPE Cast Iron Cylinder Head (part #110100103). Factory aluminum heads are a well-known weak point—the mismatched heat expansion rates between the aluminum head and cast-iron block cause head gasket scrubbing that eventually leads to blown gaskets. Aluminum heads are also prone to warping, cracking, or melting under high heat or performance use.
PPE solves these issues with a specialty alloyed gray cast iron cylinder head that matches the expansion rate of the OEM iron block. The result is dramatically improved resistance to heat, fatigue, and creep, eliminating the common failure points of the stock heads while delivering longer service life and greater peace of mind.
Key Features
- Specialty alloyed gray cast iron construction for superior strength and thermal stability
- Same heat expansion rate as the Duramax iron block — no more head gasket scrubbing
- Fully assembled and ready to install
- Premium nitrided valves: chromoly-silicon alloy intake valves and 21-4N (Stellite-reinforced) exhaust valves
- Upgraded 125 lb conical/tapered valve springs with CNC-machined chromoly retainers and spring seats/locators
- Powdered metal valve seats for excellent wear and heat resistance
- Includes new valve seals, keepers, guides, rocker arm dowels, and freeze plugs
- Reduced engine clatter compared to factory aluminum heads
- Improved thermal efficiency
- 3-year unlimited mileage warranty
Fitment: 2004.5–2010 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax LLY, LBZ, or LMM engines. Fits either side of the engine. Sold individually (two required for a complete engine).
Important Notes:
- LLY engines require LBZ/LMM-style glow plugs when using these heads.
- Upgraded pushrods are recommended for best results.
- Ground shipping only on this heavy item.
Whether you’re replacing a failed factory head or building a more reliable daily driver or performance Duramax, the PPE 110100103 Cast Iron Cylinder Head is one of the strongest upgrades available.
Fits: Duramax 2006-2016
Fits: LMM | LML Duramax 2007.5-2011
California Restricted
Fits: Universal - 4 Inch Intake Systems
Fits: Universal - 4 Inch Intake Systems