
Peterbilt 357/378 Parts
Find the best Peterbilt 378 aftermarket parts in the business here at 4 State. The Peterbilt 378 semi truck represents all of the characteristics of the Peterbilt brand, and was a popular model with similar features to the Peterbilt 379. Pete truck models are a brand of choice for experienced truckers who need dependable semi trucks. 4 State Trucks has all the semi truck parts and accessories you need to make your Pete 378 stand out to showcase your unique personality. Whether you need aftermarket bumpers, exhaust, or fuel tanks, we've got you covered. Hit the open road in style and comfort with the best custom gear for your Peterbilt heavy duty truck or 18 wheeler.
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High Performance Stage 2 Turbocharger For Caterpillar 3406B, C, E, C15 & C16
BULLY DOG
$2,050.00Bully Dog High Performance Stage 2 Turbocharger Fits Caterpillar 3406B/C/E/C15/C16Increase horsepower and decrease fuel costs of your class 8 vehicle with this high performance Stage 2 Turbocharger with a billet wheel by Bully Dog. This upgrade has a...$2,050.00 -
22 Inch Chrome American Eagle Bumper, 10 Gauge W/ Tow, 9 Oval Light Holes For Peterbilt 378, 379
VALLEY CHROME PLATING
$1,482.99Valley Chrome American Eagle Bumper W/ Tow, 9 Oval Light Holes Fits Peterbilt 378 & 379If you are in the market for a new or replacement bumper, look no further than this 10-gauge (1/8 inch thick) chrome-plated steel blind mount bumper from Valley Chrome...$1,482.99 -
Peterbilt 378, 379, 386, 388, 389 Extended Basic Flat Panel Day Cab Conversion Kit
FIBERTECH
$2,567.99Peterbilt 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...$2,567.99 -
Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab
FIBERTECH
$2,637.99Day 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...$2,637.99 -
Day Cab Flat Panel Complete Conversion Kit With Dark Gray Interior For Peterbilt 378, 379, 386, 388, 389 Regular Cab
FIBERTECH
$2,637.99Peterbilt 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...$2,637.99 -
Peterbilt 378, 379, 386, 388, & 389 Day Cab Extended Basic Conversion Kit
FIBERTECH
$2,585.99Peterbilt 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...$2,585.99 -
Day Cab Flat Panel Complete Conversion Kit With Tan Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
$2,663.99Peterbilt 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 -...$2,663.99 -
Day Cab Flat Panel Complete Conversion Kit With Light Gray Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
$2,663.99Peterbilt 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 -...$2,663.99 -
Day Cab Flat Panel Complete Conversion Kit With Dark Gray Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
$2,663.99Peterbilt 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 -...$2,663.99 -
Day Cab Flat Panel Complete Conversion Kit With Black Interior For Peterbilt 378, 379, 386, 388, 389 Ultra Cab
FIBERTECH
$2,663.99Peterbilt 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 -...$2,663.99 -
Dual Heated & Motorized Mirrors With Harness
AFTERMARKET
$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...$2,305.99 -
Jones Performance Fiberglass Hood For Peterbilt 357 & 378
JONES PERFORMANCE
$2,419.99Jones Performance Hood Shell Fits PeterbiltJones Performance is a leading manufacturer of aftermarket truck hoods that boast high strength and durability. Each hood is meticulously inspected to ensure an exceptional fit and long-lasting performance. They...$2,419.99