2004.5-2010 Duramax Cylinder Head Cast Iron (110100103)

Fits

The Duramax's OEM cast-aluminum cylinder heads fall short over time - the varying heat expansion rates between the cast-iron engine block and cast-aluminum cylinder head can lead to head gasket wear and, eventually, blown head gaskets. In high-performance settings with intense heat, the aluminum heads can also bend, melt, or crack.

PPE’s newest addition to their line of upgrades for the Duramax engine - the Cast Iron Cylinder Head! Eliminating head gasket and cracking worries with this high-quality gray iron casting. With elevated fatigue strength and impressive resistance to heat and creep, this head will significantly extend your engine's lifespan. Plus, its heat expansion rate matches the stock cast-iron cylinder block, meaning no more blown head gaskets!

Each head includes upgraded valve train parts. All valves are crafted from premium materials and fully nitridated. The tapered valve springs feature a higher spring rate and lighter retainers/locators, improving response at higher RPMs and preventing valve float. Powder metal valve seats offer exceptional durability and heat resistance. The cast-iron composition also reduces engine noise with its denser, sturdier properties.

Whether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.

Part Number: 110100103

• Cast Iron Construction
• Resistant to bending, melting or cracking
• Upgraded valve train parts
• Valves fully nitidated
• Tapered valve springs feature a higher spring rate
• Lighter retainers/locators
• Improved response at higher RPMs

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• The valve seats of the PPE Heavy Cast Iron Cylinder Heads are installed with an interference that maximizes the durability and lifespan of the cylinder heads. Such interference might not be optimal for extreme-performance applications where a significant amount of heat is created. For those applications, PPE suggests that the exhaust valve seats be replaced with higher interference (+0.006'' to +0.008'') oversized exhaust valve seats (Nominal size 34mm).
• Requires the use of LBZ/LMM glow plugs on LLY engines
• 50 States Emissions Legal (E.O. D-701-38)