Peterbilt 379 Parts

At 4 State Trucks, you’ll find everything you need to keep your iconic 379 model running strong and looking sharp. From bumpers and exhausts to fuel tanks, fenders, and chrome trim, we’ve got Peterbilt accessories and parts designed to fit your specific model year (87’ – 07’). Whether it’s a full-body restoration, a small component replacement, or a custom upgrade, our lineup has what you need.

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6 Inch Oval Strobe Warning Light Kit With Reflector

AUTOMANN USA

MSRP:

Now: $61.99 - $62.99

Was:

Improve vehicle visibility and on-site safety with the 6 Inch Oval Strobe Warning Light Kit With Reflector, designed for dependable warning performance. This LED strobe light features a...

PPR_299956

SKU:

PPR_299956

Color:

Amber/Green

Color:

Green

Style Options:

Grommet Mount

Product Type:

Lighting

Make:

Universal Items

Shape Options:

Oval

Ready To Ship:

Yes

MSRP:

Now: $61.99 - $62.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $61.99 - $62.99

Was:

Subtotal:
Automatic Reset Circuit Breaker With Vertical Mount- 12V/24V

AUTOMANN USA

MSRP:

Now: $4.61 - $4.63

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks15A Circuit Breaker With Vertical Mount 66215, 82219012V - 24V Automatic Reset 15 Amp Circuit Breaker*...

PPR_299959

SKU:

PPR_299959

Product Type:

Air, Electrical, & Safety

Make:

Universal Items

MSRP:

Now: $4.61 - $4.63

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $4.61 - $4.63

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2-Inch Round Reflector

AUTOMANN USA

MSRP:

Now: $2.14 - $2.31

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks2 Inch Amber Round Quick Mount ReflectorQuick Mount Round Amber ReflectorThis compact 2-inch round...

PPR_299958

SKU:

PPR_299958

Product Type:

Lighting

Color:

Red

Width Options:

2 Inch

Color:

Amber

Make:

Universal Items

Diameter Options:

2 Inch

MSRP:

Now: $2.14 - $2.31

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $2.14 - $2.31

Was:

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Mini Warning Slimline 1 Inch LED Strobe Light

AUTOMANN USA

MSRP:

Now: $50.99 - $59.99

Was:

Boost your vehicle's safety with the Mini Warning Slimline 1 Inch LED Strobe Light, available in 3, 3.5, or 4.5-inch sizes with amber or white LEDs and clear lenses. This slimline strobe provides...

PPR_299957

SKU:

PPR_299957

Color:

Amber/Clear

Color:

White

Style Options:

LED

Product Type:

Lighting

Make:

Universal Items

Height Options:

1 Inch

Width Options:

3 Inch

Width Options:

4 1/2 Inch

Shape Options:

Rectangular

Width Options:

4 Inch

Width Options:

3 1/2 Inch

Style Options:

Black Housing

MSRP:

Now: $50.99 - $59.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $50.99 - $59.99

Was:

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4 Inch Back Up Light, Grommet Mount

AUTOMANN USA

MSRP:

Now: $28.44 - $35.97

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks4 Inch Back Up Light, Grommet Mount 17 DiodeUniversal 12V LED Backup LightThis 4-inch LED back-up light...

PPR_299954

SKU:

PPR_299954

Product Type:

Lighting

Length Options:

4 Inch

Style Options:

Grommet Mount

Make:

Universal Items

Diameter Options:

4 Inch

MSRP:

Now: $28.44 - $35.97

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $28.44 - $35.97

Was:

Subtotal:
2.5 Inch Round 7 Diode Reflex Marker Light, Grommet Mount

AUTOMANN USA

MSRP:

$8.08

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks2.5 Inch Round 7 Diode Reflex Marker Light, Grommet Mount - Red LED / Red LensRed 2.5 Inch Round Marker...

PPR_299953

SKU:

PPR_299953

Product Type:

Lighting

Color:

Amber

Style Options:

Grommet Mount

Color:

Red

Length Options:

2 1/2 Inch

Make:

Universal Items

Color:

Various

Shape Options:

Round

Diameter Options:

2 1/2 Inch

MSRP:

$8.08

Was:

Qty in Cart: 0

Price:

MSRP:

$8.08

Was:

Subtotal:
Grease Fitting Assortment Kit - 110 Piece

AUTOMANN USA

MSRP:

$34.62

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksSAE Grease Fitting Assortment Kit - 110 Piece110pc Hydraulic Grease Fitting AssortmentThis 110-piece...

PPR_299948

SKU:

PPR_299948

Product Type:

Tools

Make:

Universal Items

Position:

Kit Full

MSRP:

$34.62

Was:

Qty in Cart: 0

Price:

MSRP:

$34.62

Was:

Subtotal:
Ratcheting Chain Wrench W/ Chain Length Options

AFTERMARKET

MSRP:

Now: $106.99 - $240.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks13 Inch Ratcheting Chain Wrench Fits 0.5 to 4.75 Inch ODRatcheting Chain WrenchThis versatile tool...

PPR_299947

SKU:

PPR_299947

Product Type:

Tools

Length Options:

19 Inch

Length Options:

13 Inch

Make:

Universal Items

Material Options:

Steel

MSRP:

Now: $106.99 - $240.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $106.99 - $240.99

Was:

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FREE SHIPPING OVER $249

Chrome Emergency Deluxe Air Valve Knob W/ Glossy Trailer Sticker, Screw On

UNITED PACIFIC

MSRP:

$23.92

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksChrome Emergency Deluxe Air Valve Knob W/ Black Glossy Sticker, Screw OnScrew On Emergency Deluxe Air...

PPR_299949

SKU:

PPR_299949

Truck Class:

Heavy Duty

Product Type:

Interior

Finish Options:

Chrome-Plated

Material Options:

Aluminum

Make:

Universal Items

Material Options:

Plastic/Poly

Color:

Various

Style Options:

Thread On

MSRP:

$23.92

Was:

Qty in Cart: 0

Price:

MSRP:

$23.92

Was:

Subtotal:
Torque Socket 1 Inch Drive

AFTERMARKET

MSRP:

Now: $138.99 - $174.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksTorque Socket 1 Inch Drive 1-1/4 Inch Hex 250ft./lbsHeavy-Duty Torque Limiting SocketTake the guesswork...

PPR_299946

SKU:

PPR_299946

Product Type:

Tools

Color:

Black

Diameter Options:

1 1/4 Inch

Length Options:

12 Inch

Color:

Red

Diameter Options:

1 1/2 Inch

Make:

Universal Items

MSRP:

Now: $138.99 - $174.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $138.99 - $174.99

Was:

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Axle Seal Driver Installation Tool Adapter Plate - 0.875 Inch Thickness W/ Major Diameter Options

AUTOMANN USA

MSRP:

Now: $24.28 - $34.85

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksSeal Driver Plate Replaces RD310Axle Seal Installation Tool Adapter PlateThe Seal Installation Adapter...

PPR_299943

SKU:

PPR_299943

Product Type:

Wheels

Truck Class:

Heavy Duty

Diameter Options:

5 1/2 Inch

Diameter Options:

4 3/4 Inch

Shape Options:

Round

Diameter Options:

6 Inch

Diameter Options:

5 3/4 Inch

Color:

Black

Diameter Options:

6 1/4 Inch

Make:

Universal Items

MSRP:

Now: $24.28 - $34.85

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $24.28 - $34.85

Was:

Subtotal:
Retro Fender Light For Kenworth

TPHD

MSRP:

$49.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksTPHD Retro Fender Light Amber LED / Amber Lens For KenworthKenworth Style Light Assembly With Single...

PPR_299945

SKU:

PPR_299945

Product Type:

Lighting

Color:

Amber/Clear

Color:

Amber

Make:

Kenworth

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$49.99

Was:

Qty in Cart: 0

Price:

MSRP:

$49.99

Was:

Subtotal:
T-Tap Electrical Wire Connectors W/ Gauge Options

AUTOMANN USA

MSRP:

Now: $6.60 - $10.40

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks22-18 Gauge Red T-Tap Connectors - 50 PCST-Tap Electrical Wire Connectors* High Quality Tap* Red* 22-18...

PPR_299940

SKU:

PPR_299940

Product Type:

Air, Electrical, & Safety

Color:

Yellow

Size Options:

12 Gauge

Color:

Blue

Size Options:

18 Gauge

Color:

Red

Size Options:

22 Gauge

Make:

Universal Items

MSRP:

Now: $6.60 - $10.40

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $6.60 - $10.40

Was:

Subtotal:
On Sale

Limited Quantity Available

Wheel Oil Seal, Stemco Type W/ Axle Position Options

AFTERMARKET

MSRP:

Now: $31.43 - $87.99

Was: $66.99

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks4.552 Inch OD Front Axle Wheel Oil Seal 370132AReplacement Front Steer Axle Oil Bath Wheel Seal* High...

PPR_299942

SKU:

PPR_299942

Truck Class:

Heavy Duty

Product Type:

Wheels

Ready To Ship:

Yes

Diameter Options:

5 1/2 Inch

Color:

Black

Shape Options:

Round

Diameter Options:

4 1/2 Inch

Make:

Universal Items

MSRP:

Now: $31.43 - $87.99

Was: $66.99

Qty in Cart: 0

Price:

MSRP:

Now: $31.43 - $87.99

Was: $66.99

Subtotal:
Hub Odometer - Displays in Kilometers W/ RPK

AFTERMARKET

MSRP:

$112.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksHub Odometer 311 RPK - Displays in KilometersHub Odometer 311 RPK* High Quality Hub Odometer* Displays...

PPR_299941

SKU:

PPR_299941

Product Type:

Interior

Truck Class:

Heavy Duty

Make:

Universal Items

MSRP:

$112.99

Was:

Qty in Cart: 0

Price:

MSRP:

$112.99

Was:

Subtotal:
Brass Union Tee DOT - Air Brake Fitting W/ Size Options

AUTOMANN USA

MSRP:

Now: $7.62 - $13.98

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1/2 Inch Brass Union TeeAir Brake Fitting Fits 1/2 Inch Tubes* High Quality Union Tee- Dot Compression*...

PPR_299939

SKU:

PPR_299939

Product Type:

Air, Electrical, & Safety

Diameter Options:

3/8 Inch

Material Options:

Brass

Diameter Options:

1/2 Inch

Diameter Options:

1/4 Inch

Make:

Universal Items

MSRP:

Now: $7.62 - $13.98

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $7.62 - $13.98

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Subtotal:
Brass Compression Sleeve DOT - Air Brake Adapter For Nylon Tubing

AUTOMANN USA

MSRP:

Now: $0.45 - $2.88

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks3/8 Inch Brass Compression Sleeve DOT 1460X6, 1686765C1, 60NTA6Air Brake Adapter for 3/8 Inch Nylon...

PPR_299936

SKU:

PPR_299936

Product Type:

Air, Electrical, & Safety

Diameter Options:

1/2 Inch

Material Options:

Brass

Diameter Options:

1/4 Inch

Diameter Options:

3/16 Inch

Diameter Options:

3/8 Inch

Make:

Universal Items

MSRP:

Now: $0.45 - $2.88

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $0.45 - $2.88

Was:

Subtotal:
Brass Compression Fitting Union DOT W/ Size Options

AUTOMANN USA

MSRP:

Now: $2.05 - $6.35

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1/2 Inch Brass Compression Union DOTBrake Line Compression Union for Nylon Tubing UnionHigh-Quality...

PPR_299938

SKU:

PPR_299938

Product Type:

Air, Electrical, & Safety

Diameter Options:

1/8 Inch

Material Options:

Brass

Diameter Options:

1/2 Inch

Diameter Options:

1/4 Inch

Make:

Universal Items

MSRP:

Now: $2.05 - $6.35

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $2.05 - $6.35

Was:

Subtotal:
Brass Compression Tube Nut Fitting DOT W/ Size Options

AUTOMANN USA

MSRP:

Now: $1.01 - $2.47

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks3/8 Inch Brass Compression Nut DOT3/8 Inch Brass Compression Tube Nut Fitting* High Quality Compression...

PPR_299937

SKU:

PPR_299937

Product Type:

Air, Electrical, & Safety

Diameter Options:

3/8 Inch

Diameter Options:

1/2 Inch

Material Options:

Brass

Diameter Options:

1/4 Inch

Diameter Options:

1/8 Inch

Make:

Universal Items

MSRP:

Now: $1.01 - $2.47

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $1.01 - $2.47

Was:

Subtotal:
Driver/Passenger Side 10 X 2.25 Inch Electric Brake Assembly 023-026-00/023-027-00

AFTERMARKET

MSRP:

Now: $69.99 - $79.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trailers10 X 2.25 Inch Electric Brake Assembly Driver Side 023-026-00Electric Trailer Brake Assembly - 3,500...

PPR_299935

SKU:

PPR_299935

Truck Class:

Heavy Duty

Product Type:

Trailer

Make:

Trailer

Position:

Driver Side

Position:

Passenger Side

Rating:

3500 LBS

Make:

Universal Items

MSRP:

Now: $69.99 - $79.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $69.99 - $79.99

Was:

Subtotal:

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Shop for Repair & Performance Parts for the Peterbilt 379

We stock aftermarket parts from top-tier brands, each engineered to meet or exceed classic OEM Peterbilt 379 parts for both newer and older 379 model years. Replacement parts reduce downtime and can enhance the efficiency of your big rig. Easily swap out worn-out or broken mechanical components: - Turbochargers and exhaust manifolds. - Radiators, heater hoses, and electrical components. -Peterbilt 379 front shocks, air-ride suspension hardware and drivetrain or powertrain replacements. Installing high-quality aftermarket performance upgrades can lead to a positive ROI and stronger performance. Whether your Peterbilt needs an exhaust system upgrade or an extensive suspension rebuild, we've got the parts to get the job done.

Add Polished Chrome Upgrades

Elevate your truck's look with exterior chrome parts: stainless steel visors, grilles, rear fenders, and front bumpers for Peterbilt 379. Add larger Peterbilt diesel fuel storage tanks and a new set of Peterbilt 379 chrome stack tops.

Customize the Interior with Peterbilt 379 Accessories

Our Peterbilt 379 interior accessories let you mix and match designs to fit your truck's theme. For decades, we've helped source parts for drivers to build their custom show trucks. Customizing the interior? If you can dream it, there's likely a product to help you build it. Browse through dash trims, upholstery, dual-tone interior cab lights, vent trim covers, custom foot pedals, and more. Interior accessories help to customize the entirety of your rig. You can add unique rear sleeper window shapes, chrome-polished mirror accessories, cabin doors, and in-cab vinyl flooring kits. When it comes to fine-tuning your custom interior, there are endless options. Filter through a vast selection of products via the materials, design features, sizes, and aftermarket brands that truckers trust. At the bottom of the page, you can review the item details, check for product specs, search for limited-time discounts on popular items, and add the order to cart. Easy.

Frequently Asked Questions About Peterbilt 379 Parts

What years are Peterbilt 379 parts compatible with, and will they fit my specific model?

Most Peterbilt 379 parts fit 1987–2007 trucks, but fitment depends on the exact part and your setup (standard vs extended hood, trim packages, modifications). Always confirm OEM specs and model details before ordering. For custom builds, contact support with your truck info.

What's the difference between aftermarket and OEM Peterbilt 379 parts in terms of quality and durability?

OEM parts match factory specs and usually cost more. Quality aftermarket parts can perform similarly for 30–50% less, especially for chrome and accessories. Look for strong materials (ex: 16-gauge+ bumpers), good plating/finishing, and a warranty—avoid ultra-cheap parts that rust or peel quickly.

How difficult is it to install Peterbilt 379 bumpers and what tools do I need?

Most installs take 2–4 hours with basic tools: socket set (especially 3/4" and 7/8"), torque wrench, jack stands/lift, and ideally a helper. Many bumpers use factory mounts; some may need minor drilling. Rusted hardware and alignment are the usual challenges. Pro install is often $200–$400.

What chrome and finish options are available for Peterbilt 379 parts, and how do they hold up?

Triple chrome: best shine, needs regular upkeep (especially in winter). Powder coat: tough and chip-resistant, less mirror-like. Polished stainless: higher upfront cost, won’t rust, low maintenance. Choose based on climate and how much maintenance you want to do.

Which Peterbilt 379 parts should I prioritize replacing for both appearance and functionality?

Start with safety items (headlights/marker lights). Next, replace rust-prone parts like bumpers, battery boxes, and step plates. Then move to high-impact upgrades like air cleaners and exhaust. Interior items (dash panels, handles) improve daily comfort. Prices can vary. Budget $2,000-5,000 for a comprehensive exterior refresh, or tackle projects individually starting with the most visible or damaged components.