Machine description: Exterior Color: White, Engine: DD13, Engine HP: 505, Transmission: Allison 4700 RDS Automatic, Front Suspension: Flat Leaf, Front Axle:, MFS-20-133A, Rear Axle: RT-46-160, Ratio 4.30, Wheelbase: 279&q... more info about the 2023 Western Star 49X SB.