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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4 Inch Stainless Cab Panels W/ 14 Amber/Amber 3/4 Inch Round LED Lights For Peterbilt 378, 379, 388, 389
PHOENIX DESIGN
$333.994 X 43.125 Inch Stainles Steel Cab Panels W/ 6 Inch Light Spacing Fits Peterbilt 378, 379, 388, 389 * High Quality Cab Panels* Made of high quality 430 stainless steel* 4 Inch * Kit Includes:* 7 - 3/4 Inch Round Amber LED Lights Per Side* Amber Lens* 14...$333.99 -
Chrome Rocker Switch Trim For Kenworth & Peterbilt - 3 Pack
UNITED PACIFIC
$7.26Chrome Rocker Switch TrimUpgrade your vehicle's interior with our premium Switch Trim, meticulously crafted from durable chrome-plated plastic. Featuring a plain style for a sleek and understated look, these trims are sold as a pack of 3. While not OEM,...$7.26 -
Chrome Mid & Center Column Cover For Peterbilt
UNITED PACIFIC
$15.49Mid/Center Column Cover Fits PeterbiltUpgrade your vehicle's interior with our aftermarket replacement steering column trim. Crafted from chrome-plated plastic, this trim piece replaces the OEM plastic trim, adding a sleek and stylish touch to your...$15.49 -
BESTfit 5 X 51 Inch Aluminized Steel Exhaust Muffler
BESTFIT TRUCK PARTS
$148.99BESTfitHeavy Gauge Steel W/ Aluminized Plating OE Style Exhaust Muffler * High Quality Exhaust Muffler* Made Of Steel With Aluminized Plating* Dimensions- Inner Diameter: 5 Inch- Outlet Diameter: 5 Inch- Muffler Body Diameter: 10 Inch- Muffler Body...$148.99 -
BESTfit Air Spring Replaces Firestone 9448, Goodyear 1R11-150
BESTFIT TRUCK PARTS
$130.99BESTfit Rolling Lobe Airbag - Replaces Firestone 9448, Goodyear 1R11-150Looking for a replacement air spring? Our aftermarket replacement part, sold individually, ensures reliable performance and durability. It effectively replaces OE numbers...$130.99 -
BESTfit Cab & Sleeper Opening Seal For Peterbilt 359
BESTFIT TRUCK PARTS
$129.99BESTfit Sleeper Boot Seal For Opening Between Cab And SleeperLooking for a reliable seal for your sleeper to cab opening? Our Flexible Rubber Seal is designed to fit standard sleepers and cabs, providing a factory-style fit. With dimensions of 3.250...$129.99 -
BESTfit Square To Round AC Compressor Mounting Bracket Kit
BESTFIT TRUCK PARTS
$44.87BESTfit AC Compressor Mounting Bracket Kit * High Quality Compressor Mounting Bracket Kit* 13.00 Inch x 10.00 Inch x 2.625 Inch* Converts Existing Mounting Brackets On York 209 / 210 Or Tecumseh HG850, HG1080, Compressors To A Sanden SD508, SD508HD,...$44.87 -
BESTfit Polished Aluminum 9.5 Inch Diameter Air Tank For Peterbilt
BESTFIT TRUCK PARTS
$399.99BESTfit 9.5 Inch Air Tank Fits PeterbiltThis Air Tank is constructed from polished aluminum and features a 33 1/2-inch overall length with a 9 1/2-inch diameter. It has a maximum pressure rating of 150 PSI and is equipped with several threaded ports for...$399.99 -
BESTfit Aluminum Flywheel Housing Replaces OE Numbers 1694153, 2234739, 3044156 For C15 CAT Engines
BESTFIT TRUCK PARTS
$1,121.99BESTfit Flywheel Housing Fits CAT C15Upgrade your vehicle's flywheel housing with our durable aluminum construction. Designed to SAE #1 specifications, this housing accommodates a 20-inch ring gear flywheel and features a starter location on the driver's...$1,121.99 -
BESTfit 5 Inch O.D. 12 X 18 Inch 90 Degree Miter Cut Exhaust Stack
BESTFIT TRUCK PARTS
$205.99BESTfit 5 Inch Chrome Miter Cut Exhaust Stack 12 X 18 InchIntroducing our Chrome-Plated Steel Exhaust Stack, meticulously crafted to elevate your vehicle's performance and style. Constructed with premium chrome-plated steel, this stack boasts exceptional...$205.99 -
Peterbilt 377, 378, 379 BESTfit 5 Inch I.D./O.D. 90 Degree Exhaust Elbow Pipe, Replaces 14-13394-202
BESTFIT TRUCK PARTS
$189.99BESTfit Aluminized Steel 90 Degree Exhaust Elbow PipeUpgrade your exhaust system with our Aluminized Steel Elbow Pipe, featuring a sturdy construction for long-lasting durability. With a convenient 90-degree angle design, this pipe ensures optimal fit...$189.99 -
TPHD Air Ride Suspension Height Control Leveling Valve - Midland Type
TPHD
$111.99Height Control Leveling Valve - Midland TypeUpgrade your vehicle's suspension system with our Suspension Height Control Leveling Valve! Crafted from durable metal, this valve features two 1/4 inch suspension ports and offers immediate response (IR) with...$111.99