PPE Upgraded Cast Iron Cylinder Head Set For 2004.5-2010 GMC Chevy 6.6L Duramax 2010-2018 Explorer Sport 3.5L Raybestos GPZ clutches

Raybestos GPZ clutches

and even improve fuel mileage by roughly 1 MPG

PPE Brushed Heavy Duty Aluminum Transmission Deep Pan

Nearly all other exhaust manifolds on the market for 6

PPE Upgraded Cast Iron Cylinder Head Set For 2004.5-2010 GMC Chevy 6.6L Duramax 2010-2018 Explorer Sport 3.5L Raybestos GPZ clutchesThe OEM Duramax cast aluminum cylinder heads fall short over time the different heat expansion rates between cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting and or cracking in high performance applications where excessive heat is introduced PPEs Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and