PPE 110100103 Cast Iron Cylinder Head | 2004.5-010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Heavy duty cast iron
• Heat resistant
• Upgraded valve train components
• Reduces engine clatter
• Eliminates blown head gaskets
• 3 year limited warranty
• Sold individually

Extreme Duty Cylinder Head

The 2004.5-2010 GM 6.6L Duramax is a great engine, however one of its weak points is the cast aluminum cylinder heads. The aluminum cylinder heads are prone to blown head gaskets, warping, melting and cracking in high-performance applications with excessive heat. PPE's Cast Iron Cylinder Head is the solution to preventing these issues thus adding reliability and strength to your Duramax. The Cast Iron Cylinder Head is the ultimate upgrade, eliminating head gasket or cracking issues, heat resistance, and elevated fatigue strength. Never again worry about a blown head gasket, with PPE's heavy-duty Cast-Iron Cylinder Head for your Duramax.

Upgraded and Enhanced Cylinder Head

Each Cast Iron Head comes complete with upgraded valve train components. All valves are made of superior materials and fully nitridated. The tapered valve springs’ higher spring rate and lighter retainers/locators enable faster response during higher RPMs and eliminate valve float. Powder metal valve seats provide superior wear and heat resistance. The denser and stiffer material properties from the cast-iron construction also significantly reduce engine clatter. 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.

Fits: 2004.5-2010 GM 6.6L Duramax

Application Notes:

• Important Note: 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).

Installation Instructions

Year Ranges	Make	Model	Series	Engine
2004.5	GM/Chevrolet/GMC	Silverado/Sierra	2500HD/3500HD	6.6L Duramax LB7/6.6L Duramax LLY

Property	Values
Year Ranges	2004.5
Make	GM/Chevrolet/GMC
Model	Silverado/Sierra
Series	2500HD/3500HD
Engine	6.6L Duramax LB7/6.6L Duramax LLY