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