
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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Peterbilt Leak Defender Anti-Siphon BRCS
HEAVY TRUCK SOLUTIONS
$120.82Leak Defender Anti-Siphon BRCS For PeterbiltProtect your vehicle from fuel theft with the Anti-Siphon Tube, made from durable billet aluminum. Designed to prevent unauthorized siphoning, this tube is essential for safeguarding your fuel. Suitable for...$120.82 -
Lower Coolant Radiator Pipe for Peterbilt 357 and 377 with Cummins Engines
DAYTON / DORMAN
$125.65Enhance Your Peterbilt's Cooling System with a Durable Lower Coolant Radiator PipeUpgrade your Peterbilt 357 (1987-2007) or Peterbilt 377 (1988-2000) equipped with a Cummins engine with this lower coolant radiator pipe. Designed for both Set-Back Axle...$125.65 -
Peterbilt Leak Defender Anti-Siphon Kit
HEAVY TRUCK SOLUTIONS
$409.89Peterbilt 3-Piece Fuel Neck Adapter Set W/ Collar, Fuel Cap, and Anti-Siphon DeviceEnhance your vehicle's fuel security with our Anti-Siphon Kit, crafted from billet aluminum for durability. This kit includes an anti-siphon mechanism, collar, fuel cap,...$409.89 -
Peterbilt 357, 365, 367, 378 & 379 30 Diode Amber LED Turn Signal Replaces 38550, P546063
AUTOMANN USA
$65.03- LED Turn Signal - 3 Wire Leads With Male Bullet Connector/Terminal - PC Lens With Epoxy Sealed Circuit Board - 3 Inch Height - Mounts On Side Of Driver Or Passenger Side Headlight Housing - 31 Diodes LED, 12V -...$65.03 -
Holes for 2-7 Way Merritt Connection Box
MERRITT
$570.99Merritt Connection Box With Holes for 2-7 Way - Connection Box - 2- 7 Way - Sold Individually - Aftermarket Replacement Part (Not OEM)$570.99 -
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 -
Fibertech Rear Frame Fiberglass Cover With 4 Rnd 4 Inch And 3 Rnd 2 Inch Light Cutouts
FIBERTECH
$395.99Fiberglass Rear Frame Cover With 4 Rnd 4 Inch And 3 Rnd 2 Inch Light CutoutsFiberglass Rear Frame Cover With 4 Rnd 4 Inch And 3 Rnd 2 Inch Light Cutouts$395.99 -
Fibertech Fiberglass Rear Frame Cover
FIBERTECH
$342.99Fiberglass Rear Frame Cover By Fibertech - Rear Frame Cover - Fiberglass - Blank- No Light Cutouts - Trimming May Be Necessary For Proper Fit - Sold Individually - Aftermarket Replacement Part (Not OEM)*** - This Item...$342.99 -
Peterbilt 2 X 24 Inch Stainless Accent Step Strips 16 Gauge With Double Sided Tape For 01-050100002 Battery Box Cover
FIBERTECH
$149.992 X 24 Inch Stainless Accent Step Strips 16 Gauge With Double Sided Tape For 01-050100002 Battery Box Cover For Peterbilt 379These stainless accent step strips are designed to fit the 01-050100002 battery box cover, providing a sleek and durable finish...$149.99 -
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