View 0 Photos View 0 Videos 2017 Paccar PX-9 Engine for a Peterbilt 337 $16,610 USD (USED) Paccar PX9 Warranty: 180 Day Parts Only Assembly#: GCEXH0540LAV Serial#: 74048162 Horsepower: 300 ConditionUsedAssembly NumberGCEXH0540LAVFits To Make(s)PeterbiltFits To Model(s)337Stock Number25970231 MLS Number14295128CategoryEngines Last Updated4/24/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info