2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7 Idle Kits and Parts " 5'' rear gear axles

5'' rear gear axles

S&M Diesel "Black Smoke Matters" Shirts are the perfect choice

Limits Up-Shifts

-Injector comes with nozzle washer and body o-ring for installation

and Cayman models to shorten the throw by up to 35% over the factory shifter

2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7 Idle Kits and Parts " 5'' rear gear axles50 States Emissions Legal (E. O. D 701 38) 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. PPE's new LB7 Cast Iron Cylinder