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384

384

The Peterbilt 384 is a Class 8 aerodynamic conventional truck produced from 2008 to around 2015, designed as a lighter-duty sibling to the 386 and 387. Built with fuel efficiency in mind, the 384 was popular among regional and vocational fleets seeking a balance between maneuverability, weight savings, and driver comfort.

The Peterbilt 384 is well-suited for:

  • Regional and short-haul freight
  • Dry van and reefer transport
  • Flatbed work
  • Bulk commodities and tanker
  • Vocational applications with a need for lighter curb weight

Its short bumper-to-back-of-cab (BBC) length and aerodynamic styling made it a cost-effective fleet performer.

Cab Type

  • Cab Style: Aerodynamic conventional
  • Cab Width: ~1.9 meters (narrow cab)
  • Configurations:
    • Day cab
    • Mid-roof sleeper
  • Shares the narrow-body cab structure with the 386, 385, 378, and 379

Aftermarket Seat Compatibility

The Peterbilt 384 uses the standard vocational/narrow cab bolt pattern:4.68" x 12"

This means that no adaptor plate is required for most aftermarket seat installations.

 

Installation Notes

  • No adaptor needed unless cab has been modified
  • Watch for dash clearance on Legacy High Back or tall Knoedler models in day cab setups
  • Flat floor and modern electrical connectors simplify installation compared to older Peterbilts