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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Shock Bolt With Shoulder For Front Air Ride Kits
LOAD-SHARE SUSPENSIONS
$59.155/8 Inch Diameter Shock Bolt With Shoulder Includes Nuts & Washers * High Quality Steel Bolt* 5/8 Inch Diameter* Used in Air Ride Kits And Other Applications* Includes Nuts And Washers* Sold Individually***High Quality Aftermarket Replacement Part (Not...$59.15 -
CSM Air Line Box Trough Style W/ Holes For Single Plug And Two 4 Inch Lights
CHROME SHOP MAFIA
$313.99Single Electric Air Line Trough Box For Deck Plate W/ 4 Inch Light Holes By Chrome Shop Mafia * High Quality Air Line Box* Made Of 304 Stainless Steel* Designed to Fit Flush In Your Deck Plate* Outside Dimensions:- 21.125 Inch - Length- 13.000 Inch -...$313.99 -
Fast Flap Quick Mount & Release Mud Flap Mount Kit
MINIMIZER
$171.95Minimizer Fast Flap Quick Mount And Release Mud Flap Mount KitThis high quality Fast Flap quick mount and release mount kit includes 4 brackets to mount a pair of mud flaps and is easy to install. The kit should not be used with spring loaded mud flap...$171.95 -
Air Bag Replaces C81-1003, C81-1012, C81-6000 & W01-358-8813 For Flex Air, AG380 & Airglide Suspensions
AFTERMARKET
$198.99Replacement Air Spring Rolling Lobe For Peterbilt & Kenworth * High Quality Air Spring * Sold Individually* Warranty On Air Spring Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)****...$198.99 -
1 1/4 Inch Bullet Style Chrome Plastic Nut Cover Without Flange
LIFETIME NUT COVERS
$2.341 1/4 Inch Bullet Style Chrome Plastic Nut Cover Without Flange By Lifetime Nut Covers * High Quality Nut Cover* Made Of Chrome Plated Plastic* 1 1/4 Inch* Bullet Style * Without Flange* Sold Individually* Warranty On Nut Covers Against Defects In...$2.34 -
Single Side Air Bag With Controller And Bracket
LOAD-SHARE SUSPENSIONS
$485.99Single Side Air Bag With Controller And Bracket * High Quality Air Bag* Single Side * With Controller And Bracket* Sold Individually* Warranty On Air Bags Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$485.99 -
Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute
LOAD-SHARE SUSPENSIONS
$573.99Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute * High Quality Air Bag Replacement Kit* Single Side * Replacement Kit For 4 Inch Round Top U Bolt* Sold Individually* Warranty On Air Bag Replacement Kit Against Defects...$573.99 -
On Sale
Seal Input Shaft For Rockwell RD20145 - Replaces A1205R2592 & 100494
OPP - ORIGINAL PARTS PROGRAM
Now: $10.90Was: $41.94Seal Input Shaft * High Quality Seal Tail Shaft* For Rockwell RD20145* Replaces OEM # A1205R2592, 100494* Sold Individually* Warranty On Seal Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...Now: $10.90Was: $41.94 -
Seal Tail Shaft For Rockwell RD20145 - Replaces A1205P2590
OPP - ORIGINAL PARTS PROGRAM
$41.95Seal Tail Shaft * High Quality Seal Tail Shaft* For Rockwell RD20145* Replaces OEM # A1205P2590, 100495* Sold Individually* Warranty On Seal Tail Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...$41.95 -
Seal Pinion For Rockwell RR20145 - Replaces A1205N2588
OPP - ORIGINAL PARTS PROGRAM
$52.37Seal Pinion * High Quality Seal Pinion* For Rockwell RR20145* Replaces OEM # A1205N2588, 100263* Sold Individually* Warranty On Seal Pinion Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...$52.37 -
Nut For Pinion & Tail Shaft Rockwell RD-RR2014 - Replaces KIT2637
OPP - ORIGINAL PARTS PROGRAM
$20.89Nut Pinion And Tail Shaft * High Quality Nut Pinion And Tail Shaft* For Rockwell RD-RR2014* Replaces OEM # KIT2637* Sold Individually* Warranty On Nut Pinion And Tail Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...$20.89 -
On Sale
Nut For Input Shaft Rockwell RD20145 - Replaces KIT2638
OPP - ORIGINAL PARTS PROGRAM
Now: $9.00Was: $27.27Nut Input Shaft * High Quality Nut Input Shaft* For Rockwell RD20145* Replaces OEM # KIT2638* Sold Individually* Warranty On Nut Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...Now: $9.00Was: $27.27