View 6 Photos View 0 Videos 2004 Cummins ISX 450ST Engine Oil Pump for a Peterbilt 378 Newly Listed $59.95 USD Cummins ISX Oil Pump, Take off 2004 Peterbilt 378 with a Cummins ISX450ST Engine with 535,578 miles, P/N: 237320C ConditionUsedFits To Make(s)PETERBILTFits To Model(s)378Stock Number16266 MLS Number14094734CategoryEngine Oil Pumps Last Updated1/16/2026 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info