Peterbilt 365
Severe-duty vocational truck • Production 2007–present
About the Peterbilt 365
The Peterbilt 365 is Peterbilt's heaviest production-line severe-duty vocational truck. Used for the most demanding dump applications, oilfield service, concrete mixers, and heavy-haul work. Set-back front axle, heavy chassis, optional Tri-Drive for permit heavy-haul up to 120,000 lb GVWR. Smaller cab footprint than 567 — better for tight construction sites. Direct competitor to Western Star 49X, Mack Granite, Kenworth T880.
Overview
The Peterbilt 365 is Peterbilt's heaviest production-line severe-duty vocational truck. Used for the most demanding dump applications, oilfield service, concrete mixers, and heavy-haul work. Set-back front axle, heavy chassis, optional Tri-Drive for permit heavy-haul up to 120,000 lb GVWR. Smaller cab footprint than 567 — better for tight construction sites. Direct competitor to Western Star 49X, Mack Granite, Kenworth T880.
Specifications
- Manufacturer
- Peterbilt
- Class
- Class 8
- Vehicle type
- Severe-duty vocational truck
- Cab type
- Day cab
- Production years
- 2007–present
- Applications
- Dump, concrete mixer, oilfield, severe-duty vocational, heavy haul
- Typical engines
- PACCAR MX-13, Cummins X15, Cummins L9
- Typical transmissions
- Eaton manual, Allison automatic
- GVWR range
- 44,000-120,000 lb
Design and engineering
Set-back front axle for vocational weight distribution. Heavy-duty steel-aluminum cab construction. Reinforced frame rails up to 0.5" thick. Multiple GVWR upgrade packages. Optional crew cab for work crews. Smaller BBC than 567 makes it more maneuverable.
Generations and major changes
Market position and popularity
Steady vocational seller — popular in oilfield (Permian Basin, Bakken) and heavy-haul markets. Owner-operators in vocational specialties prefer the 365 over 567 for tighter sites. Used market is strong, with 2015-2020 units in $80K-180K range depending on chassis spec.
Who buys this truck
Oil-field service, heavy-haul specialists, severe-duty dump contractors, owner-operators in vocational markets.
Common problems and reliability notes
PACCAR MX-13 EGR cooler issues at 400K+ miles. Cummins X15 emissions complexity (DEF heater failures, NOx sensor degradation). Severe-duty wear on suspension and steering components.
Pros and cons
✓ Pros
- • Heaviest production Peterbilt vocational
- • Heavy-haul capability
- • Owner-operator brand cachet
- • Cummins X15 option
⚠ Cons
- • Higher cost than Freightliner SD or Mack Granite
- • Smaller cab than 567
- • PACCAR engine known issues
Recalls and complaints by model year
Browse recalls and complaints by model year:
| Year | Recalls | Complaints | Links |
|---|---|---|---|
| 2020 | 1 | 0 | Recalls |