Compare Quick view COMETIC GASKETS Top End Gasket Kit GM 6.6L Duramax 04-07 COMETIC GASKETS MSRP: Now: $616.36 Was: Engine Gasket Set - Street Pro - Top End - 4.100 in Bore - GM Duramax - Kit MSRP: Now: $616.36 Was: Compare Quick view Qty in Cart: 0 Price: MSRP: Now: $616.36 Was: Subtotal: