View 1 Photo View 0 Videos 1999 Peterbilt 378 Day Cab Truck - Detroit 500HP Newly Listed At auction May. 14 1999 PETERBILT 378 Non-Sleeper Conventional, Detroit Series 60 12.7 Liter Engine, 500 H.P., Engine Brake, 18 Speed Transmission, (Manual), 40,000 Lb. Rear Ends, 3.90 Ratio, Air Ride... ConditionUsedDuty ClassHeavy Duty Day Cab TruckHorse Power500 HPEngine ModelDetroit SeriesSuspensionAir RideRear End40,000 lb 3.90 ratio MLS Number14335528CategoryDay Cab Semi Trucks Last Updated4/28/2026 LocationKersey, CO, US Listed ByTaylor & Martin LLC (855) 546-___ SHOWNUMBERCall Seller Email Seller Save More Info