Description
Fibertech Peterbilt 6 Inch Cab Extensions – 379/388/389
Fibertech Peterbilt 6 Inch Cab Extensions. These one-piece fiberglass cab and cowl panels feature a gray primer gel coat for sanding and painting. Multiple fitment options are available for Peterbilt 379, 388 and 389 models.
Product Features
- Brand: Fibertech
- Material: Fiberglass
- Style: One-Piece Cab and Cowl Extensions
- Height: 6 Inches (See Fitment Exceptions)
- Finish: Gray Primer Gel Coat
- Fitment: Select Peterbilt 379, 388 and 389 Models
- Quantity: Sold as a Pair
Important Information
- Trimming may be required depending on exhaust configuration.
- Select the correct model year and exhaust application.
- CP389-20: Passenger-side cowl panel is 1″ to accommodate the DPF; panel stops at 54″ due to exhaust clearance.
Note: Verify fitment and exhaust compatibility before ordering.





