T380 Medium Duty

Kenworth T380 — Aftermarket Seating Overview

Class 7–8 | 109" BBC | 2.1-Meter Cab | Medium-Duty to Heavy-Duty Vocational

The Kenworth T380 is a versatile and powerful medium- to heavy-duty truck built on the 2.1-meter wide cab platform, like the T180 and T280. Designed for durability and driver comfort, it serves in demanding regional, vocational, and municipal applications. Upgrading to an aftermarket seat can enhance comfort, reduce fatigue, and support safety across long and varied workdays.

Common Applications for the T380

• Tow and Recovery

• Utility and Service Fleets

• Construction Support

• Box and Reefer Trucks

• Tankers and Dump Bodies

• Municipal Snow Plows and Street Maintenance

These applications often involve long hours, variable terrain, and frequent stops — making a high-quality seat an essential component for driver well-being.

OEM Seating & Why Upgrade

The Kenworth T380 typically comes equipped with an OEM Air-Cushion or Air-Cushion Plus Driver Seat.

Why Upgrade:

• Enhanced lumbar and side support for long shifts

• Shock-isolating suspensions reduce fatigue

• Heated or cooled seats increase all-season comfort

• Wider cushions or deeper seat pans improve fit for larger drivers

• Memory foam, dual shock suspensions, and custom controls for higher-end comfort

Fitment & Compatibility

Built on the 2.1-meter cab, the T380 shares mounting layouts with other modern Kenworth models like the T680 and T880.

Fitment Details:

• Standard Kenworth bolt pattern

• Supports low-profile and standard-profile suspension seats

• Full clearance for intermediate and high-back seats

• OEM seatbelt location may affect adapter needs

Replacing Tethered Seats:

• If your truck includes a Gramag seat (post-2013) with integrated seatbelt, you will need:

  • A seat adaptor plate with integrated tethers

  • This ensures compliance with FMVSS regulations for seatbelt anchoring

Installation Tips

• Always confirm:

  • Seat base clearance, backrest height

  • Bolt hole compatibility with OEM rails

  • Adaptor needs if replacing a tethered seat

• Consider compact base options if truck includes aftermarket flooring or additional cab hardware

Pro Tip:

For vocational work like snow plowing, dump operations, or tankers — look for seats with durable covers (vinyl or HD cloth) and mechanical suspension options that withstand shock and debris better than standard air systems.