2013 Peterbilt 337, Truck Delivery, Intercoolers, Fits to: Peterbilt 337, (Used) 2013 Peterbilt 337, INTERCOOLER, For a Paccar PX-6 Engine, For more information about this item, gives us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON,MD 21921, Truck Year 2013, VIN 2NP2HM6X4DM197821, Engine Make PACCAR 2NP2HM6X4DM197821