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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Domed Baby Moons Tandem Drive 5/8 Inch Axle Kit - No Logo

REALWHEELS

MSRP:

Now: $167.99 - $247.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks With Tandem Rear AxleStainless Steel Rear Domed Baby Moon Tandem Drive Axle Kit- No LogoRear Domed...

PPR_299503

SKU:

PPR_299503

Finish Options:

Mirror

Material Options:

Stainless Steel

Diameter Options:

5/8 Inch

Product Type:

Wheels

Finish Options:

Black Powder Coat

Make:

Universal Items

MSRP:

Now: $167.99 - $247.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $167.99 - $247.99

Was:

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5 - 6 Inch Manual Slack Adjuster

AFTERMARKET

MSRP:

$75.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks5- 6 Inch Manual Slack Adjuster Replaces 278106, 288542, E1116, R823005, M16WR1002, 2121135- 6 Inch...

PPR_299470

SKU:

PPR_299470

Position:

Driver Side

Position:

Passenger Side

Product Type:

Frame & Chassis

Make:

Universal Items

MSRP:

$75.99

Was:

Qty in Cart: 0

Price:

MSRP:

$75.99

Was:

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Mirror Glass Kit 8 x 19 Inch Replacement Glass

AFTERMARKET

MSRP:

Now: $56.99 - $77.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksMirror Glass Kit For Dual Vision, Non- Heated Replaces 613475Replacement Mirror Glass Kit For Dual...

PPR_299481

SKU:

PPR_299481

Material Options:

Glass

Type Options:

Heated

Style Options:

Dual Vision

Style Options:

Flat

Product Type:

Exterior

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $56.99 - $77.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $56.99 - $77.99

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Domed Baby Moon Drive Axle 5/8 Inch Bolts - No Logo

REALWHEELS

MSRP:

Now: $44.78 - $47.21

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks With Single Rear AxleStainless Steel Rear Domed Baby Moon Drive Axle Cover- No LogoRear Domed Baby...

PPR_299499

SKU:

PPR_299499

Material Options:

Stainless Steel

Finish Options:

Mirror

Finish Options:

Black Powder Coat

Diameter Options:

5/8 Inch

Product Type:

Wheels

Make:

Universal Items

MSRP:

Now: $44.78 - $47.21

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $44.78 - $47.21

Was:

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Brake Shoe Return Spring For Steer Axle

AUTOMANN USA

MSRP:

Now: $3.80 - $6.35

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksRed Brake Shoe Spring For Eaton Steer Axle1.16 X 3.50 Inch Brake Shoe Spring* High Quality Brake Shoe...

PPR_299466

SKU:

PPR_299466

Color:

Black

Length Options:

3 1/2 Inch

Diameter Options:

1 Inch

Color:

Red

Product Type:

Frame & Chassis

Length Options:

7 1/4 Inch

Length Options:

7 1/2 Inch

Width Options:

1/8 Inch

Color:

Blue

Length Options:

7 1/16 Inch

Width Options:

1/4 Inch

Make:

Universal Items

MSRP:

Now: $3.80 - $6.35

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $3.80 - $6.35

Was:

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TPHD 60 Inch Wood Handle For Brushes

TPHD

MSRP:

Now: $8.64 - $13.86

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksTPHD 60 X 15/16 Inch Wood Handle W/ Nylon Tip60 Inch Wood Handle W/ Nylon Tip By TPHD* High Quality...

PPR_299487

SKU:

PPR_299487

Product Type:

Polishing

Material Options:

Wood

Length Options:

60 Inch

Diameter Options:

1 Inch

Make:

Universal Items

MSRP:

Now: $8.64 - $13.86

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $8.64 - $13.86

Was:

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3 Way Solenoid Air Valve W/ Solenoid Options

AFTERMARKET

MSRP:

Now: $167.99 - $214.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks3 Way Solenoid Right Angle Air Valve- 1/4 Inch NPT12V Solenoid Right Angle Air Valve- 1/4 Inch NPT*...

PPR_299477

SKU:

PPR_299477

Product Type:

Air, Electrical, & Safety

Length Options:

4 1/4 Inch

Make:

Universal Items

MSRP:

Now: $167.99 - $214.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $167.99 - $214.99

Was:

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Rear Domed Baby Moon Tandem Drive Axle Cover- Real Logo Floater

REALWHEELS

MSRP:

Now: $281.99 - $530.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks W/ Tandem Rear AxleRealWheels Stainless Steel Single Axle Real Logo Baby Moons- 4 PieceSingle Axle...

PPR_299495

SKU:

PPR_299495

Material Options:

Stainless Steel

Finish Options:

Mirror

Diameter Options:

5/8 Inch

Product Type:

Wheels

Make:

Universal Items

MSRP:

Now: $281.99 - $530.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $281.99 - $530.99

Was:

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Hose End 1/2 X 5/8 Inch Female

AFTERMARKET

MSRP:

Now: $53.99 - $80.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksHose End 5/8 X 3/4 Inch Female Replaces 187751212, FGSFFX12125/8 ID X 1-1/16 Inch-14 Female Hose End*...

PPR_299462

SKU:

PPR_299462

Length Options:

3 1/2 Inch

Length Options:

3 1/16 Inch

Diameter Options:

5/8 Inch

Diameter Options:

1/2 Inch

Product Type:

Cargo Control

Make:

Universal Items

MSRP:

Now: $53.99 - $80.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $53.99 - $80.99

Was:

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15 x 7 Inch Brake Drum W/ Bolt Hole Options

AFTERMARKET

MSRP:

Now: $521.99 - $537.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks15 x 7 Inch 8 Hole Brake Drum Replaces TDA03123276002, 2121123276, 031232760028 Hole 15 x 7 Inch Brake...

PPR_299473

SKU:

PPR_299473

Product Type:

Frame & Chassis

Make:

Universal Items

MSRP:

Now: $521.99 - $537.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $521.99 - $537.99

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Dump Lower Hinge Assembly For 1.25 Inch Diameter Post

AFTERMARKET

MSRP:

Now: $45.03 - $51.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks2.5 Inch Dump Lower Hinge Assembly For 1 Inch Diameter Post2.5 Inch Dump Lower Hinge Assembly* High...

PPR_299458

SKU:

PPR_299458

Width Options:

2 1/2 Inch

Diameter Options:

1 1/4 Inch

Product Type:

Cargo Control

Width Options:

4 Inch

Make:

Universal Items

MSRP:

Now: $45.03 - $51.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $45.03 - $51.99

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Stainless Steel Constant Torque Clamp

AUTOMANN USA

MSRP:

Now: $6.36 - $8.87

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks3.75 to 4.62 Inch Stainless Steel Constant Torque Clamp Replaces CT450LSS, P532928, 32645, HK450,...

PPR_299479

SKU:

PPR_299479

Product Type:

Engine Parts

Material Options:

Stainless Steel

Make:

Universal Items

MSRP:

Now: $6.36 - $8.87

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $6.36 - $8.87

Was:

Subtotal:
4.5 - 5.5 Inch Manual Slack Adjuster

AUTOMANN USA

MSRP:

$30.91

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks4.5 - 5.5 Inch Manual Slack Adjuster Replaces 278294, E2762, L1379, R822013, R824013, 035131, AX323824...

PPR_299469

SKU:

PPR_299469

Position:

Driver Side

Product Type:

Frame & Chassis

Position:

Passenger Side

Make:

Universal Items

MSRP:

$30.91

Was:

Qty in Cart: 0

Price:

MSRP:

$30.91

Was:

Subtotal:
Hydraulic Hose Fitting ORFS Female Thread 3/4 Inch ID

AFTERMARKET

MSRP:

Now: $55.99 - $57.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksHydraulic Hose Fitting ORFS Female Thread 3/4 ID X 1 Inch - 14 X 3.56 InchHydraulic Hose Fitting ORFS...

PPR_299454

SKU:

PPR_299454

Product Type:

Cargo Control

Length Options:

3 3/4 Inch

Length Options:

3 1/2 Inch

Make:

Universal Items

Diameter Options:

3/4 Inch

MSRP:

Now: $55.99 - $57.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $55.99 - $57.99

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Hydraulic Hose Fitting ORFS Female W/ Hose ID Options

AUTOMANN USA

MSRP:

Now: $19.82 - $35.33

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksHydraulic Hose Fitting ORFS Female, Thread 5/8 Inch ID X 1 Inch - 14ORFS Female Hydraulic Hose Fitting...

PPR_299465

SKU:

PPR_299465

Length Options:

3 1/4 Inch

Diameter Options:

3/8 Inch

Length Options:

2 3/4 Inch

Length Options:

3 Inch

Product Type:

Cargo Control

Diameter Options:

1/2 Inch

Length Options:

3 1/8 Inch

Make:

Universal Items

Diameter Options:

5/8 Inch

MSRP:

Now: $19.82 - $35.33

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $19.82 - $35.33

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8 X 19 Inch Mirror W/ No CB Antenna Or Temp Sensor

AFTERMARKET

MSRP:

Now: $194.99 - $431.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks8 X 19 Inch Chrome Mirror For Single Vision- Motorized, Heated Replaces 613413Chrome Mirror For Single...

PPR_299480

SKU:

PPR_299480

Color:

Black

Style Options:

Heated

Product Type:

Exterior

Finish Options:

Chrome-Plated

Color:

Red

Width Options:

8 Inch

Style Options:

Dual Vision

Color:

Amber

Height Options:

19 Inch

Type Options:

Heated

Make:

Universal Items

MSRP:

Now: $194.99 - $431.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $194.99 - $431.99

Was:

Subtotal:
Hydraulic Hose Male NPT UT Fitting W/ Length Options

AUTOMANN USA

MSRP:

Now: $14.88 - $17.61

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks3/8 Inch- 18 Male NPT UT Fitting3/8 Inch- 18 X 1.89 Inch Male NPT UT Fitting* High Quality UT Fitting*...

PPR_299450

SKU:

PPR_299450

Length Options:

1 3/4 Inch

Product Type:

Cargo Control

Make:

Universal Items

MSRP:

Now: $14.88 - $17.61

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $14.88 - $17.61

Was:

Subtotal:
6 - 7 Inch Manual Slack Adjuster

AFTERMARKET

MSRP:

$65.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks6- 7 Inch Manual Slack Adjuster Replaces 279947, E2669, 2121146- 7 Inch Manual Slack Adjuster- Driver...

PPR_299471

SKU:

PPR_299471

Product Type:

Frame & Chassis

Position:

Driver Side

Position:

Passenger Side

Make:

Universal Items

MSRP:

$65.99

Was:

Qty in Cart: 0

Price:

MSRP:

$65.99

Was:

Subtotal:
Hydraulic Hose Fitting SAE 45 IN Male 1/4 ID

AUTOMANN USA

MSRP:

$20.92

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksHydraulic Hose Fitting SAE 45 IN Male 1/4 ID X 7/16 Inch -24SAE 45 IN Male Hydraulic Hose Fitting...

PPR_299461

SKU:

PPR_299461

Product Type:

Cargo Control

Length Options:

2 3/4 Inch

Length Options:

2 5/8 Inch

Diameter Options:

1/4 Inch

Make:

Universal Items

MSRP:

$20.92

Was:

Qty in Cart: 0

Price:

MSRP:

$20.92

Was:

Subtotal:
Stainless Steel License Plate Holder

AFTERMARKET

MSRP:

Now: $64.99 - $136.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of Trucks14 Inch Stainless Steel Single License Plate Holder14 Inch Single License Plate Holder* High Quality...

PPR_299446

SKU:

PPR_299446

Material Options:

Stainless Steel

Width Options:

27 1/2 Inch

Style Options:

Hinge Mount

Height Options:

8 Inch

Width Options:

14 Inch

Product Type:

Bumpers

Make:

Universal Items

MSRP:

Now: $64.99 - $136.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $64.99 - $136.99

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.