2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7 Idle Kits and Parts " S&M Diesel "Black Smoke Matters"

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

5 inch of lift over factory ride height

Associated Comments:No Drilling Required

5'' rear gear axles

the transfer case needs to be indexed to allow use of the factory front driveshaft so an indexing ring and new transmission crossmember are supplied

2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7 Idle Kits and Parts " S&M Diesel "Black Smoke Matters"50 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