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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BESTfit 100 Gallon Center Fill Fuel Tank 26 X 48 Inch For Peterbilt Early Style
BESTFIT TRUCK PARTS
$739.99BESTfit 26 Inch 100 Gallon Fuel Tank Fits PeterbiltThis BESTftit 100 gallon fuel tank has a 26 inch diameter and measures 43 inches seam to seam. Designed to integrate seamlessly with early style manifolds, this center-fill tank maintains the use of...$739.99 -
BESTfit 100 Gallon Center Fill Fuel Tank 23 X 60 Inch For Peterbilt Early Style
BESTFIT TRUCK PARTS
$959.99BESTfit 23 Inch 100 Gallon Fuel Tank Fits PeterbiltThis BESTfit Fuel Tank Is Manufactured To OE Specifications With The Same Materials As Used In OE Manufacturing, Is Rigorously Tested Under FMSCA Regulations And ISO Certified. We are So Confident In The...$959.99 -
BESTfit Gabriel Shock Stud Assembly - 402041
GABRIEL
$20.35BESTfit Gabriel Shock Stud Assembly Replaces 402041 * High Quality Stud Assembly* Sold Individually* Warranty On Stud Assemblies Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)****...$20.35 -
Over-Inflate Kit For PACCAR Rear Air Suspension - Includes 12V Air Solenoid, 25 Ft 1/2 Inch Air Line & Fittings
AFTERMARKET
$133.99Over-Inflate Kit For Peterbilt & Kenworth Rear Air Suspension * High Quality Over-Inflate Kit* Over Inflate Kit* For Paccar Rear Air Suspension* Contains Air Solenoid* 12 Volt* 25 Ft 1/2 Airline And Fittings* Does Not Come With Switch* Sold As Kit***High...$133.99 -
304 Stainless Steel On-Top Air Line Box Sectionalized Deck Plate W/ Trailer Air, 7-Way, Hydraulic Hookups
IOWA CUSTOMS
$499.99On-Top Air Line Box Sectionalized Deck Plate W/ Trailer Air, 7-Way & Hydraulic Hookups * High Quality Deck Plate Accessories* Made Of Polished Stainless Steel* On-Top Airline Box * With Trailer Air Hydraulic And One 7 Way Hook Up* Made In USA* Sold...$499.99 -
Stainless Steel 8.25 X 3.00 Inch Air Tank Straps For Peterbilt 379, 378, 386 & 389 - Straight Design
PHOENIX DESIGN
$105.993 X 8.25 Inch Stainless Steel Air Tank Straps * High Quality Air Tank Strap* Made Of Stainless Steel* 8.25 Inches Diameter X 3.0 Inches Wide* Sold As Pair * Made In USA* Warranty On Air Tank Strap Against Defects In Workmanship & Material From Date Of...$105.99 -
5 Inch Plain Economy Exhaust Elbow BOM For Peterbilt 357, 378 Passenger Side W/ Hi Mount Exhaust
AUTOMANN USA
$373.995 Inch Exhaust Elbow Bottom Of Muffler Fits Peterbilt 357 & 378 Passenger Side * Economy Exhaust Elbow* Aluminized Steel * Above The Frame* Single Exhaust* Thickness 0.062 Inch* 5 Inch OD* Sold Individually* Warranty On Exhaust Elbow Against Defects In...$373.99 -
Transmission Cooler Mounting Block Kit
OPP - ORIGINAL PARTS PROGRAM
$7.44Transmission Cooler Mounting Block Kit * High Quality Transmission Mounting Block Kit* Fits 29-07050406 Coolers* Sold Individually*** High Quality Aftermarket Replacement Part (Not OEM)***This Original Parts Program item is not aftermarket and is an...$7.44 -
Breezeway Window Screen, Snap In 18 x 30 Inch For Freightliner, International, Kenworth, Mack, Peterbilt, Volvo W/ Out Vent Post
AFTERMARKET
$70.52Snap In Window ScreenEnjoy natural air flow while driving your full-sized truck with Breezeway Screens. These innovative screens snap easily onto the window of your truck, providing a simple and effective to way to cool off your cab when it is not ready...$70.52 -
Stainless Steel Rear Frame Cover With Notch Cutout For Steel Crossmembers For Peterbilt
TURNPIKE TRUCK TRIM
$83.99Rear Frame Cover With Notch Cutout * High Quality Rear Frame Covers* With Cut Out* Fits Steel Cross Members* Sold Individually* Warranty On Cross Members Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$83.99 -
Belmor Bug Screen & Winter Front Hardware Kit For Peterbilt 300 Series
BELMOR
$36.71Bug Screen & Winter Front Hardware Kit Fits Peterbilt With 12 Turn BucklesQuickly change between your Belmor Bug Screen and Winter Front with this hardware kit. It includes 12 turn buckles, 12 screws, 12 lock washers, 12 flat washers and 12 nuts. It fits...$36.71 -
Rockwood Stainless Steel Switch Guard Front Full Locking Diff For Peterbilt
ROCKWOOD
$18.99SS Front Full Locking Diff Switch GuardElite Truck Accessoriesoffers this quality stainless steel blank front full locking differential switch guard cover by Rockwood Products. Sold individually, it is designed for various Peterbilt models and is made in...$18.99