View 26 Photos View 0 Videos 2021 Peterbilt 337 Single Axle Day Cab Truck - Paccar 300HP, 6 Speed Allison Hs Automatic Newly Listed Contact for price 2021 Peterbilt 337 Single Axle Day Cab Tractor, Paccar PX9 8.9L Turbo Diesel Engine, 300 HP, Engine Brake, Allison 3000HS 6 Speed Automatic Transmission, Only 80,199 ECM Verified Miles ... ConditionUsedUsage2,563 HoursDuty ClassHeavy Duty Day Cab TruckHorse Power300 HPEngine ModelPaccar PX9Drivetrain4x2Transmission6 Speed Allison HS AutomaticSuspensionAir RideRear AxleSingle AxleRear End21,000 lb 5.57 ratioStock Number18028D MLS Number14164868CategoryDay Cab Semi Trucks Last Updated2/26/2026 LocationThorton, CO, US Sold ByDTI Trucks (855) 653-___ SHOWNUMBERCall Seller Email Seller Save More Info