New 2026 Peterbilt 520 Call For Price Specifications Engine Model PACCAR MX-11 Wheelbase 210 HP | Torque 400 | 1600 Front Axle PACCAR 20,000 Transmission Allison 4500 RDS-P Rear Axle Dana Spicer 46,000 Cab Configuration Front Loader Rear Axle Ratio 4.56 Trim Level Probilt - Black/Gray Rear Suspension Hendrickson HMX EX460 Paint Color White Tires Front | Rear 315/80R22.5 | 11R22.5 Body Manufacturer Heil