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About the Peterbilt 378
The Peterbilt 378 is a heavy-duty Class 8 conventional truck built for demanding haulage and vocational jobs. Celebrated for its rugged construction, flexible configurations and driver-focused ergonomics, it’s a popular choice for fleets and owner-operators needing dependable long-haul performance.

2004 PETERBILT 378
- Manufacturer: Peterbilt
- Model: 378
- Horsepower: 550 hp
- Gross weight: 26,308,357 kg
Steel Coolant Pipe 2 1/2" Diameter Take off 2004 Peterbilt 378 with a Cummins ISX450 Engine OEM# F66-6021 / F666021
Spokane Valley, WA
2007 PETERBILT 378
- Manufacturer: Peterbilt
- Model: 378
- Horsepower: 550 hp
- Mileage: 368,000 mi
Super dump, CAT C13, 18 spd, 368,000 miles, price on request.
Everett, WA

