PPE Ported Cast Iron Cylinder Head Set For 2004.5-2010 GMC Chevy 6.6L Duramax 1993-2008 Toyota Corolla Muffler Included: No (Muffler Delete)

Muffler Included: No (Muffler Delete)

65-RFE and 66-RFE Transmission

Rally Armor believes important tools should be made from quality materials so they can extend the life and prevent further damage to vehicles

(1) Differential Drop Kit

PPE Ported Cast Iron Cylinder Head Set For 2004.5-2010 GMC Chevy 6.6L Duramax 1993-2008 Toyota Corolla Muffler Included: No (Muffler Delete)The 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 new ported Cast Iron Cylinder Head is the ultimate upgrade to your