2025 Peterbilt 537, PACCAR, PX-9, 330HP, Allison 6 Speed Transmission, Day Cab, , , Stock # 1785375 Looking for a truck that can handle the toughest jobs? We ve got it for you. This Peterbilt Model 537 features the powerful PACCAR PX-9 engine with 330 HP, Allison 6-speed 3500 RDS automatic transmission, 190 inch wheelbase and 33,000 GVWR. Don t hesitate to call or come by Rush Truck Center - Tolleson and let one of our sales professionals find the right body option to get this truck on the road for you! Financing options are available.