Peterbilt 357/378 Exterior Parts
Maximize the performance of your Peterbilt 357/378 with our assortment of cab panels, fairings, replacement mirrors, and sleeper options
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On Sale
Fibertech 6 Inch Day Cab Extended Basic Conversion Kit For Peterbilt 378, 379, 386, 388, 389
FIBERTECH
Now: $2,198.09Was: $2,585.99Peterbilt Day Cab Extended Basic Conversion Kit - Extended Basic Conversion Kit - Includes: - 3-Piece 6 Inch Fiberglass Cab Extension - Bonded 1 Inch X 2 Inch Aluminum Bracing - Fiberglass Interior Window Trim -...Now: $2,198.09Was: $2,585.99 -
On Sale
Fibertech Day Cab Flat Panel Conversion Kit - Panel Only For Peterbilt 378, 379, 386, 388, 389, & 389 Glider Flat Top
FIBERTECH
Now: $2,182.79Was: $2,567.99Peterbilt Flat Panel Conversion Kit - Flat Panel Conversion Kit - Includes: - One-piece Fiberglass Panel - Mounting Hardware - 3-Piece 6 Inch Fiberglass Cab Extension - Bonded 1 Inch X 2 Inch Aluminum Bracing -...Now: $2,182.79Was: $2,567.99 -
On Sale
Peterbilt 378, 379, 386, 388, 389 Extended Basic Flat Panel Day Cab Conversion Kit
FIBERTECH
Now: $1,775.64Was: $2,088.99Peterbilt Ext. Cab Basic Flat Panel Day Cab Conversion KitGet a comfy ride with this 6-inch fiberglass cab extension for your Peterbilt 378, 379, 386, 388, 389, or 389 Glider. It adds 4 inches of legroom and features a rugged aluminum sub-structure for...Now: $1,775.64Was: $2,088.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab
FIBERTECH
Now: $2,333.19Was: $2,455.99Day Cab Flat Panel Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One-piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing- Fiberglass Interior Window Trim- 19 Inch x 36 Inch Rear Window Glass- Window Seal And...Now: $2,333.19Was: $2,455.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Dark Gray Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab
FIBERTECH
Now: $2,334.14Was: $2,456.99Peterbilt Ultra Cab Flat Panel Day Cab Kit Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One-piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing- Fiberglass Interior Window Trim- 19 Inch x 36 Inch Rear Window...Now: $2,334.14Was: $2,456.99 -
On Sale
Peterbilt 378, 379, 386, 388, & 389 Day Cab Extended Basic Conversion Kit
FIBERTECH
Now: $1,804.54Was: $2,122.99Peterbilt 378, 379, 386, 388, & 389 Day Cab Extended Basic Conversion KitThis Day Cab Extended Basic Conversion Kit is for Peterbilt trucks and adds 4 inches of legroom with a 6-inch fiberglass extension. It has a strong aluminum sub-structure and is...Now: $1,804.54Was: $2,122.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
Now: $2,076.69Was: $2,185.99Peterbilt Ultra Cab Flat Panel Day Cab Kit Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One Piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing - Fiberglass Interior Window Glass- Window Seal And Lockbead -...Now: $2,076.69Was: $2,185.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Light Gray Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
Now: $2,076.69Was: $2,185.99Peterbilt Ultra Cab Flat Panel Day Cab Kit Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One Piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing - Fiberglass Interior Window Glass- Window Seal And Lockbead -...Now: $2,076.69Was: $2,185.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Dark Gray Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
Now: $2,076.69Was: $2,185.99Peterbilt Ultra Cab Flat Panel Day Cab Kit Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One Piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing - Fiberglass Interior Window Glass- Window Seal And Lockbead -...Now: $2,076.69Was: $2,185.99 -
On Sale
Day Cab Flat Panel Complete Conversion Kit With Black Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
Now: $2,076.69Was: $2,185.99Peterbilt Ultra Cab Flat Panel Day Cab Kit Complete Conversion Kit * High Quality Flat Panel Conversion Kit* Includes:- One Piece Fiberglass Panel- Bonded 1 Inch x 2 Inch Aluminum Bracing - Fiberglass Interior Window Glass- Window Seal And Lockbead -...Now: $2,076.69Was: $2,185.99 -
On Sale
Dual Heated & Motorized Mirrors With Harness
AFTERMARKET
Now: $2,190.69Was: $2,305.99Dual Heated & Motorized Mirrors With Harness * High Quality Motorized Mirror* Heated * With Harness And Switch Kit* Sold As Pair* Warranty On Motorized Mirrors Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...Now: $2,190.69Was: $2,305.99 -
On Sale
Flat Top Roof Cap, 63 Inch For Peterbilt Flat Top Models Only
FIBERTECH
Now: $1,813.04Was: $2,132.9963 Inch Flat Top Replacement Roof Cap * High Quality Roof Cap* 63 Inch* Flat Top Factory* Sold Individually* Warranty On Roof Caps Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)****...Now: $1,813.04Was: $2,132.99