Cast Iron Cylinder Head

Features:

• Heavy duty cast iron
• Heat resistant
• Fuel injector cups cast in cylinder head eliminating leaks
• Upgraded valve train components
• Upgraded tapered valve springs for faster response
• Reduces engine clatter
• Eliminates blown head gaskets
• 3 year limited warranty
• Sold individually

Extreme Duty Cylinder Head

The 2011-2016 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 is equipped with enhanced valve train components. The valves are crafted from high-quality materials and are fully nitrided. The tapered valve springs feature a higher spring rate and lighter retainers/locators, allowing for quicker response at higher RPMs and preventing valve float. Powder metal valve seats offer exceptional wear and heat resistance. The cast-iron construction's denser and stiffer properties significantly reduce engine noise. Whether you need to replace a damaged aluminum cylinder head or seek improved reliability and longevity for your Duramax engine, the PPE Cast Iron Cylinder Head is the optimal choice.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

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