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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CSM Flat Dash Conversion Kit Prep & Paint Ready For Peterbilt 379 & 389

CHROME SHOP MAFIA

MSRP:

$1,639.99

Was:

Flat Dash Conversion Kit By Chrome Shop MafiaRetrofit your truck's interior with this high-quality flat dash conversion kit, engineered for durability, performance, and a clean custom look. This...

01-15K111

SKU:

01-15K111

Product Type:

Interior

Ready To Ship:

Yes

MSRP:

$1,639.99

Was:

Qty in Cart: 0

Price:

MSRP:

$1,639.99

Was:

Subtotal:
Paintable Battery Box For Peterbilt

TWELVE GAUGE

MSRP:

$1,115.99

Was:

Peterbilt Battery Box- PaintableKeep your Peterbilt battery secure and corrosion-free with the Paintable Battery Box, made from premium stainless steel. This 1-piece box measures 31 inches in length...

01-05010094

SKU:

01-05010094

Material Options:

Stainless Steel

Finish Options:

Paintable

Product Type:

Frame & Chassis

Make:

Peterbilt

MSRP:

$1,115.99

Was:

Qty in Cart: 0

Price:

MSRP:

$1,115.99

Was:

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Paintable Battery Box Slip Cover For Peterbilt 359, 379 & 389

TWELVE GAUGE

MSRP:

$653.99

Was:

Peterbilt Battery Box Slip Cover- PaintableProtect your truck's battery box while adding a custom touch with the Paintable Battery Box Slip Cover, designed for Peterbilt 359, 379, and 389 models...

01-050100040

SKU:

01-050100040

Material Options:

Stainless Steel

Finish Options:

Paintable

Product Type:

Frame & Chassis

Make:

Peterbilt

MSRP:

$653.99

Was:

Qty in Cart: 0

Price:

MSRP:

$653.99

Was:

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CSM Tank Chair Or Couch Cushion

CHROME SHOP MAFIA

MSRP:

$142.99

Was:

Choose Option(s) to see description.CSM Tank Chair Or Couch Bottom CushionBottom Cushion For CSM Tank Chair Or CouchAdd comfort and style back to your seating setup with this CSM Tank Chair or Couch...

PPR_300371

SKU:

PPR_300371

Product Type:

Apparel

Make:

Universal Items

Color:

Black

Location:

Made In USA

MSRP:

$142.99

Was:

Qty in Cart: 0

Price:

MSRP:

$142.99

Was:

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Powder Coated Steel Power Drill Organizer Bracket

JONES MFG

MSRP:

Now: $25.90 - $46.90

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksPowder Coated Steel 2 Bay Power Drill Organizer Bracket2 Bay Power Drill Organizer BracketMaximize...

PPR_300370

SKU:

PPR_300370

Length Options:

14 Inch

Product Type:

Cargo Control

Finish Options:

Black Powder Coat

Length Options:

6 1/2 Inch

Width Options:

5 Inch

Height Options:

1 1/2 Inch

Material Options:

Steel

Make:

Universal Items

MSRP:

Now: $25.90 - $46.90

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $25.90 - $46.90

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Chrome Projector Headlight For Kenworth W900 & Peterbilt 379

AFTERMARKET

MSRP:

$524.99

Was:

Choose Option(s) to see description.Fitment* Fits Kenworth W900A 1967 thru 1982* Fits Kenworth W900B 1982 thru 2025* Fits Kenworth W900B 1994 thru 2025* Fits Kenworth W900L 1990 thru 2026* Fits...

PPR_300367

SKU:

PPR_300367

Material Options:

Plastic/Poly

Color:

White

Style Options:

LED

Finish Options:

Chrome-Plated

Position:

Driver Side

Position:

Passenger Side

Width Options:

16 Inch

Height Options:

7 Inch

Product Type:

Lighting

Make:

Kenworth

Make:

Peterbilt

MSRP:

$524.99

Was:

Qty in Cart: 0

Price:

MSRP:

$524.99

Was:

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Stop, Turn, Tail Box LED Light

AUTOMANN USA

MSRP:

Now: $81.99 - $83.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksStop, Turn, Tail Box LED Light- Driver Side Replaces 53640Driver Side Stop, Turn, Tail Box LED Light- 3...

PPR_300366

SKU:

PPR_300366

Color:

Red/White

Position:

Driver Side

Height Options:

3 Inch

Width Options:

5 3/4 Inch

Length Options:

6 3/4 Inch

Position:

Passenger Side

Product Type:

Lighting

Material Options:

Plastic/Poly

Style Options:

Black Housing

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $81.99 - $83.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $81.99 - $83.99

Was:

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36 Inch Blue Poly Coolant Hose

AUTOMANN USA

MSRP:

Now: $71.99 - $76.99

Was:

Replace worn or cracked hoses with this high-quality 36-inch Blue Poly Coolant Hose, available in 2.50-inch and 3-inch diameters. They are made from resilient poly material for superior durability...

PPR_300363

SKU:

PPR_300363

Diameter Options:

3 Inch

Style Options:

Sleeve

Material Options:

Silicone

Length Options:

36 Inch

Color:

Blue

Diameter Options:

2 1/2 Inch

Product Type:

Engine Parts

Make:

Universal Items

Material Options:

Polyester

MSRP:

Now: $71.99 - $76.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $71.99 - $76.99

Was:

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Nylon Hose Connector- 5 Pack

AFTERMARKET

MSRP:

Now: $10.51 - $12.34

Was:

Choose Option(s) to see description.1/2 Inch Nylon Hose Connector- 5 Pack Replaces 65623, 286031/2 Inch Hose Connector- 5 PackEnsure your fluid systems operate efficiently with the 1/2 Inch Nylon...

PPR_300369

SKU:

PPR_300369

Material Options:

Nylon

Length Options:

1/2 Inch

Product Type:

Cargo Control

Length Options:

5/8 Inch

Make:

Universal Items

MSRP:

Now: $10.51 - $12.34

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $10.51 - $12.34

Was:

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Drive Axle Flange Gasket W/ Size Options

AUTOMANN USA

MSRP:

Now: $1.98 - $2.02

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksDrive Axle Flange Gasket Replaces 6823, R002431, 7284, 476075, 7167435.625 ID X 8.50 OD 8 Hole Drive...

PPR_300362

SKU:

PPR_300362

Diameter Options:

8 1/2 Inch

Product Type:

Wheels

Make:

Universal Items

MSRP:

Now: $1.98 - $2.02

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $1.98 - $2.02

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Multi V - Serpentine Belt

AFTERMARKET

MSRP:

Now: $31.95 - $115.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMulti V - 6 Rib Serpentine Belt 51.50 Inch Replaces 4060515, 3579001C151.50 Inch Multi V- Serpentine...

PPR_300368

SKU:

PPR_300368

Length Options:

89 Inch

Product Type:

Engine Parts

Length Options:

51 1/2 Inch

Length Options:

52 Inch

Make:

Universal Items

MSRP:

Now: $31.95 - $115.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $31.95 - $115.99

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4-Inch Flex Tubing

AFTERMARKET

MSRP:

Now: $32.31 - $56.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks4 X 18 Inch Black Stainless Steel Flex Tubing Replaces SF418, P2065544 X 18 Inch Black 304 Stainless...

PPR_300364

SKU:

PPR_300364

Length Options:

18 Inch

Product Type:

Exhaust

Diameter Options:

4 Inch

Color:

Black

Material Options:

Stainless Steel

Length Options:

24 Inch

Finish Options:

Galvanized

Material Options:

Steel

Make:

Universal Items

MSRP:

Now: $32.31 - $56.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $32.31 - $56.99

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On Sale

Limited Quantity Available

14-16 Gauge Terminal- 56 Series

OPP - ORIGINAL PARTS PROGRAM

MSRP:

Now: $0.25

Was: $0.36

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks14-16 Gauge Female Terminal - 56 Series14-16 Gauge Female TerminalThe 14-16 Gauge Female Terminal - 56...

PPR_300353

SKU:

PPR_300353

Product Type:

Lighting

Size Options:

16 Gauge

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $0.25

Was: $0.36

Qty in Cart: 0

Price:

MSRP:

Now: $0.25

Was: $0.36

Subtotal:
Female Hose End

AUTOMANN USA

MSRP:

Now: $10.17 - $26.59

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFemale 13/32 X 1/2 Inch Hose End Replaces 24708N608, 206208813/32 X 1/2 Inch Female Hose End* High...

PPR_300361

SKU:

PPR_300361

Product Type:

Air, Electrical, & Safety

Make:

Universal Items

MSRP:

Now: $10.17 - $26.59

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $10.17 - $26.59

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Fiberglass Full Radius Fender With Lip

SHIFT PRODUCTS

MSRP:

Now: $1,298.99 - $1,463.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFiberglass Full Radius Fender With 1 Inch LipFull Radius Fender With 1 Inch Lip- 36 Inch HeightProtect...

PPR_300360

SKU:

PPR_300360

Material Options:

Fiberglass

Product Type:

Rear Fenders

Style Options:

Single Axle

Height Options:

36 Inch

Make:

Universal Items

MSRP:

Now: $1,298.99 - $1,463.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $1,298.99 - $1,463.99

Was:

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CSM 101 Inch Polished 304 Stainless Steel Full Fenders

CHROME SHOP MAFIA

MSRP:

Now: $2,249.99 - $2,306.99

Was:

Take your rig's exterior to show-level quality with the CSM 101 Inch Stainless Steel Full Fender lineup from Chrome Shop Mafia, built for drivers who want unbeatable shine and dependable durability...

PPR_299975

SKU:

PPR_299975

Product Type:

Rear Fenders

Length Options:

144 Inch

Size Options:

14 Gauge

Location:

Made In USA

Material Options:

Stainless Steel

Make:

Universal Items

Type Options:

Full Fender

Style Options:

Quilted

Ready To Ship:

Yes

MSRP:

Now: $2,249.99 - $2,306.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $2,249.99 - $2,306.99

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Subtotal:
Red Satin Airway Buffing Wheel For Angle Grinders

AFTERMARKET

MSRP:

Now: $38.58 - $45.02

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks10 Inch Red Airway Buffing Wheel For Angle Grinders10 Inch Red Airway Buffing WheelThe 9 Inch White...

PPR_300349

SKU:

PPR_300349

Diameter Options:

9 Inch

Diameter Options:

10 Inch

Product Type:

Polishing

Color:

Red

Make:

Universal Items

Shape Options:

Round

MSRP:

Now: $38.58 - $45.02

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $38.58 - $45.02

Was:

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Chrome Plated Aluminum Front Oiler Cap Cover W/ Window

LIFETIME NUT COVERS

MSRP:

Now: $639.99 - $705.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksChrome Plated Aluminum Front Oil Cap Cover W/ Teal WindowFront Oil Cap Cover W/ Teal Window & 6 4 1/2...

PPR_300344

SKU:

PPR_300344

Finish Options:

Chrome-Plated

Material Options:

Billet Aluminum

Make:

Universal Items

Color:

Blue

Position:

Front

Location:

Made In USA

Product Type:

Wheels

Color:

Red

Color:

Clear

Color:

Teal

Style Options:

Smooth

MSRP:

Now: $639.99 - $705.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $639.99 - $705.99

Was:

Subtotal:
White Airway Buffing Wheel For Use On Aluminum And Stainless Steel

AFTERMARKET

MSRP:

Now: $17.23 - $18.96

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks10 Inch White Airway Buffing Wheel For Use On Aluminum And Stainless Steel10 Inch White Airway Buffing...

PPR_300345

SKU:

PPR_300345

Diameter Options:

10 Inch

Color:

White

Product Type:

Polishing

Diameter Options:

9 Inch

Make:

Universal Items

Shape Options:

Round

MSRP:

Now: $17.23 - $18.96

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $17.23 - $18.96

Was:

Subtotal:
Mag N Wire Wheel Acid

AFTERMARKET

MSRP:

Now: $32.57 - $94.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMag N Wire Wheel Acid- 5 GallonMag N Wire Wheel AcidMaintain your wheels in pristine condition with Mag...

PPR_300350

SKU:

PPR_300350

Product Type:

Polishing

Capacity:

5 Gallons

Capacity:

1 Gallon

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $32.57 - $94.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $32.57 - $94.99

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.