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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5 X 7 Inch Headlight Inner Lamp Bucket For Peterbilt 330, 379 & Kenworth T300-T450
UNITED PACIFIC
$41.805 X 7 Inch Headlight Inner Lamp Bucket * High Quality Inner Lamp Bucket* 5 X 7 Headlight Bucket* May Fit Other Makes & Models With Modification* Sold Individually* Warranty On Inner Lamp Buckets Against Defects In Workmanship & Material From Date Of...$41.80 -
Stainless Steel 5 X 7 Inch Retaining Ring
UNITED PACIFIC
$8.25SS 5 X 7 Inch Retaining Ring W/ 4 Screw Tabs * High Quality Retaining Ring* Made Of 304 Stainless Steel* 5 Inch X 7 Inch* With 4 Screw Tabs* Sold Individually* Warranty On Retaining Rings Against Defects In Workmanship & Material From Date Of Purchase***...$8.25 -
Chrome AC Control Knob For Peterbilt 330, 335, 377, 378 & 379
UNITED PACIFIC
$5.41Chrome A/C Control Knob Fits PeterbiltUpgrade your vehicle's interior controls with our premium Control Knob, meticulously crafted from chrome-plated plastic. Sold individually, this knob provides a sleek and stylish accent to your dashboard or console...$5.41 -
Chrome Ashtray For Peterbilt
UNITED PACIFIC
$19.47Chrome Ash Tray Trim Fits PeterbiltEnhance the look of your vehicle's interior with our Ash Tray Trim, crafted from chrome-plated plastic. Please note that the ash tray insert is sold separately. Each trim piece is sold individually and is designed as an...$19.47 -
Chrome Ashtray Trim For Peterbilt
UNITED PACIFIC
$15.48Chrome Ash Tray Trim Fits PeterbiltUpgrade your vehicle's interior with our Ash Tray Trim, crafted from durable chrome-plated plastic. Please note that the ash tray insert is sold separately. Each trim piece is sold individually and is designed as an...$15.48 -
Chrome Classic Style Small Gauge Cover W/ Visor For Peterbilt 300 Series
UNITED PACIFIC
$3.31Chrome Small Gauge Cover W/ Visor Fits PeterbiltUpgrade your 2005-older Peterbilt model's dashboard with our chrome-plated plastic small gauge cover. Designed specifically for small gauges, this cover features a classic style and includes a visor for...$3.31 -
BESTfit Cab And Sleeper Seal For Peterbilt 359
BESTFIT TRUCK PARTS
$169.99BESTfit Cab & Sleeper Boot SealThe sleeper seal is constructed from factory-style flexible rubber designed specifically for the Unibilt sleeper to cab opening, suitable for large Unibilt openings only. It measures 3.250 inches in width, 0.750 inches in...$169.99 -
BESTfit Aluminum Frame Step Mill Finish
BESTFIT TRUCK PARTS
$109.99BESTfit Mill Finish Aluminum Frame StepUpgrade your vehicle with our Aluminum Frame Step, designed for durability and style. With a sleek mill finish, this frame step adds a touch of elegance to your ride. Measuring 13.75 inches in width and 27.25 inches...$109.99 -
5 Inch Aluminized Taper Lock Y Pipe For BESTfit Long 90 Degree Elbow For Peterbilt 378, 379,389 Glider
BESTFIT TRUCK PARTS
$192.99BESTfit 5 Inch Aluminized Taper Lock T-Pipe For Long Drop Elbows For Use Without Flex PipeUpgrade your exhaust system with our T-Pipe, crafted from durable aluminized steel for longevity and performance. Featuring 5-inch tapered ends, this T-Pipe is...$192.99 -
BESTfit Day Cab Conversion Kit For Peterbilt Unibilt
BESTFIT TRUCK PARTS
$905.99BESTfit Day Cab Conversion Kit Fits PeterbiltTransform your truck with our Day Cab Conversion Kit, crafted from quality fiberglass for durability and longevity. This kit includes a one-piece fiberglass panel with a pre-installed 19 x 36 rear window,...$905.99 -
Peterbilt BESTfit 5 Inch Aluminized Y-Pipe Exhaust W/5 Inch O.D. Inlet Replaces 14-15353-0150
BESTFIT TRUCK PARTS
$289.99BESTfit Aluminized Steel Exhaust Y-Pipe, Replaces 14-15353-0150Crafted from durable aluminized steel, this Exhaust Y Pipe is designed to deliver reliable performance. With a 5-inch outer diameter inlet and outlet, it promotes efficient exhaust flow...$289.99 -
BESTfit 23 Inch Fuel Tank End Cap For Peterbilt
BESTFIT TRUCK PARTS
$211.99BESTfit Fuel Tank End Cap Fits Peterbilt * High Quality Fuel Tank End Cap* 23 Inch* DOT Compliant* Sold Individually* Warranty On Fuel Tank End Cap Against Defects In Workmanship & Material From Date Of Purchase***High Quality Aftermarket Replacement...$211.99