View 4 Photos View 0 Videos Cummins ISX Engine for a 2009 Peterbilt 387 $5,900 USD Truck is running, parted out due to electrical issues, engine still in the truck Engine replaced by cummins 12/15/15 see pictures, Serial#: 79392278, Core Charge: 1000, Horse Power: 450,... ConditionUsedHorse Power450 HPFits To Make(s)PeterbiltFits To Model(s)387Will Fit Year(s)2009Part Number79392278Stock NumberP-20 MLS Number12482311CategoryEngines Last Updated12/18/2025 LocationBlue Island, IL, US Sold ByDMC Logistics (833) 657-___ SHOWNUMBERCall Seller Email Seller Save More Info