View 9 Photos View 0 Videos 2004 Cummins ISX 450ST Engine Block / Cylinder Block for a Peterbilt 378 Newly Listed $3,195 USD Cummins ISX Cylinder / Engine Short Block with Crankshaft, Pistons and Rods, Take off 2004 Peterbilt 378 with a Cummins ISX450ST Engine with 535,578 miles , Only Guaranteed as a... ConditionUsedFits To Make(s)PETERBILTFits To Model(s)378Stock Number16256 MLS Number14094713CategoryEngine Blocks / Cylinder Blocks Last Updated1/16/2026 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info