PPE CNC Ported Cast Iron Cylinder Head For 2004.5-2010 GMC Chevy 6.6L Duramax load control Unlike factory bolts

Unlike factory bolts

then the root cause is in the high pressure oil rail

1990-2005 Mitsubishi Eclipse

Durable one-piece ring gear ensures long-lasting performance

Surface Design Symmetrical slots facilitate the exit of friction dust and gasses

PPE CNC Ported Cast Iron Cylinder Head For 2004.5-2010 GMC Chevy 6.6L Duramax load control Unlike factory boltsThe 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