View 0 Photos View 0 Videos 2016 Paccar PX-7 Engine for a Peterbilt 337 $6,485 USD (USED) Paccar PX7 Warranty: 180 Day Parts Only Assembly#: 4517 Serial#: 73864462 Horsepower: 280 ConditionUsedAssembly Number4517Fits To Make(s)PeterbiltFits To Model(s)337Stock Number25951544 MLS Number14228217CategoryEngines Last Updated5/20/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info