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.

Product
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Bostrom Tan Cloth Armrest For Captain Series Seat

BOSTROM TRUCK SEATS

MSRP:

$64.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksBostrom Tan Cloth Armrest- Left Hand For Captain Series SeatCaptain Series Left Hand Tan Cloth Armrest...

PPR_300755

SKU:

PPR_300755

Position:

Driver Side

Color:

Tan

Product Type:

Seats

Position:

Passenger Side

Material Options:

Cloth

Make:

Universal Items

MSRP:

$64.99

Was:

Qty in Cart: 0

Price:

MSRP:

$64.99

Was:

Subtotal:
2.5 Inch Round Reflector Clearance Marker LED Light W/ Color Option

MAXXIMA

MSRP:

$8.09

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks2.5 Inch Round Reflector Clearance Marker LED Light- Red LED/ Red Lens2.5 Inch Red Round Reflector...

PPR_300752

SKU:

PPR_300752

Color:

Amber

Product Type:

Lighting

Diameter Options:

2 1/2 Inch

Color:

Red

Shape Options:

Round

Material Options:

Plastic/Poly

Make:

Universal Items

MSRP:

$8.09

Was:

Qty in Cart: 0

Price:

MSRP:

$8.09

Was:

Subtotal:
1.5 Inch 3 Diode Rectangular Clearance Marker LED Light W/ Color Options

MAXXIMA

MSRP:

Now: $12.19 - $14.25

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1.5 Inch 3 Diode Rectangular Clearance Marker LED Light- Blue LED/ Clear Lens1.5 Inch Blue 3 Diode...

PPR_300749

SKU:

PPR_300749

Shape Options:

Rectangular

Color:

Amber

Color:

Green

Color:

Blue

Color:

Red/Clear

Material Options:

Plastic/Poly

Color:

White/Clear

Type Options:

Grommet Mount

Color:

Red

Style Options:

Black Housing

Product Type:

Lighting

Width Options:

1 1/2 Inch

Make:

Universal Items

MSRP:

Now: $12.19 - $14.25

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $12.19 - $14.25

Was:

Subtotal:
1.25 Inch Clearance Marker LED Light W/ Color Options

MAXXIMA

MSRP:

$14.25

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1.25 Inch Clearance Marker LED Light- Green LED/ Clear Lens1.25 Inch Green Clearance Marker LED Light...

PPR_300750

SKU:

PPR_300750

Color:

Green

Material Options:

Plastic/Poly

Diameter Options:

1 1/4 Inch

Product Type:

Lighting

Shape Options:

Round

Color:

White/Clear

Height Options:

1 Inch

Type Options:

Grommet Mount

Make:

Universal Items

MSRP:

$14.25

Was:

Qty in Cart: 0

Price:

MSRP:

$14.25

Was:

Subtotal:
1.25 Inch 6 Diode Round Mini Courtesy Marker LED Light

MAXXIMA

MSRP:

Now: $13.21 - $13.45

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1.25 Inch 6 Diode Round Mini Courtesy Marker LED Light- Blue LED / Clear Lens1.25 Inch 6 Diode Blue...

PPR_300751

SKU:

PPR_300751

Color:

White/Clear

Product Type:

Lighting

Truck Class:

Universal

Diameter Options:

1 1/4 Inch

Height Options:

1 Inch

Shape Options:

Round

Material Options:

Plastic/Poly

Type Options:

Grommet Mount

Make:

Universal Items

MSRP:

Now: $13.21 - $13.45

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $13.21 - $13.45

Was:

Subtotal:
1.5 Inch Rectangular Clearance Marker LED Light W/ Color Options

MAXXIMA

MSRP:

$10.57

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1.5 Inch Rectangular Clearance Marker LED Light- Red LED/ Red Lens1.5 Inch Red Rectangular Clearance...

PPR_300748

SKU:

PPR_300748

Product Type:

Lighting

Color:

Red

Color:

Amber

Style Options:

Black Housing

Material Options:

Plastic/Poly

Shape Options:

Rectangular

Type Options:

Surface Mount

Make:

Universal Items

MSRP:

$10.57

Was:

Qty in Cart: 0

Price:

MSRP:

$10.57

Was:

Subtotal:
Round Clearance Marker LED Light

MAXXIMA

MSRP:

Now: $12.42 - $13.77

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks2 Inch Round 9 Diode Clearance Marker LED Light- Amber LED/ Amber Lens2 Inch Round Amber 9 Diode...

PPR_300746

SKU:

PPR_300746

Color:

Amber

Diameter Options:

2 1/2 Inch

Product Type:

Lighting

Material Options:

Plastic/Poly

Diameter Options:

2 Inch

Shape Options:

Round

Color:

Red

Type Options:

Grommet Mount

Make:

Universal Items

MSRP:

Now: $12.42 - $13.77

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $12.42 - $13.77

Was:

Subtotal:
3/4 Inch Clearance Marker LED Light W/ Color Options

MAXXIMA

MSRP:

$13.81

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks3/4 Inch Clearance Marker LED Light- Amber LED/ Amber Lens3/4 Inch Amber Clearance Marker LED Light W/...

PPR_300747

SKU:

PPR_300747

Color:

Amber

Height Options:

1 Inch

Product Type:

Lighting

Color:

Amber/Clear

Diameter Options:

3/4 Inch

Type Options:

Grommet Mount

Material Options:

Plastic/Poly

Color:

Red/Clear

Shape Options:

Round

Make:

Universal Items

MSRP:

$13.81

Was:

Qty in Cart: 0

Price:

MSRP:

$13.81

Was:

Subtotal:
Leaf Spring Pin 1.0625 Inch W/ Length Options

DAYTON / DORMAN

MSRP:

Now: $29.53 - $31.11

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks1.0625 X 6.969 Inch Leaf Spring Pin Replaces 034013249, 079581000, 34013249Leaf Spring Pin- 1.0625 X 6...

PPR_300744

SKU:

PPR_300744

Length Options:

7 3/4 Inch

Diameter Options:

1 Inch

Material Options:

Steel

Length Options:

7 Inch

Product Type:

Frame & Chassis

Make:

Universal Items

MSRP:

Now: $29.53 - $31.11

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $29.53 - $31.11

Was:

Subtotal:
3.344 Inch Serrated Stud Pilot Wheel Stud Left/Right Hand

DAYTON / DORMAN

MSRP:

$27.53

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks3.344 Inch Serrated Stud Pilot Wheel Stud- Left Hand3.344 Inch Left Hand Serrated Wheel Stud Replaces...

PPR_300743

SKU:

PPR_300743

Product Type:

Wheels

Material Options:

Steel

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$27.53

Was:

Qty in Cart: 0

Price:

MSRP:

$27.53

Was:

Subtotal:
15 X 1 Inch Surface Mount Back Up Strip LED Light W/ Gasket- White LED/ Clear Lens

MAXXIMA

MSRP:

$46.60

Was:

20 Diode White Surface Mount Back Up Strip LED Light W/ Gasket & Clear LensEnhance safety and confidence while reversing with this high-quality 15 x 1 Inch Surface Mount Backup Strip LED Light...

MX-M63318-A-GSKT

SKU:

MX-M63318-A-GSKT

Color:

White/Clear

Type Options:

Surface Mount

Length Options:

15 Inch

Product Type:

Lighting

Width Options:

1 Inch

Material Options:

Plastic/Poly

Make:

Universal Items

MSRP:

$46.60

Was:

Qty in Cart: 0

Price:

MSRP:

$46.60

Was:

Subtotal:
15 X 1 Inch Surface Mount Stop/Turn/Tail LED Light W/ Gasket- Red LED/ Red Lens

MAXXIMA

MSRP:

$24.74

Was:

20 Diode Red Surface Mount Stop/Turn/Tail LED Light W/ Gasket & Red LensImprove signaling performance with this durable 15 x 1 Inch Surface Mount Stop/Turn/Tail LED Light engineered for...

MX-M63318R-A-GSKT

SKU:

MX-M63318R-A-GSKT

Material Options:

Plastic/Poly

Product Type:

Lighting

Length Options:

15 Inch

Width Options:

1 Inch

Color:

Red

Type Options:

Surface Mount

Make:

Universal Items

MSRP:

$24.74

Was:

Qty in Cart: 0

Price:

MSRP:

$24.74

Was:

Subtotal:
1.65 X 4.5 Inch Rectangular Clearance Marker LED Light & Reflector- Amber LED/ Amber Lens

MAXXIMA

MSRP:

$14.25

Was:

1.65 X 4.5 Inch Amber Rectangular Clearance Marker LED Light & Reflector W/ Amber LensGet dependable performance and increased road visibility with this rectangular 1.65 x 4.5 inch LED clearance...

MX-M17100Y-DV

SKU:

MX-M17100Y-DV

Color:

Amber

Product Type:

Lighting

Material Options:

Plastic/Poly

Length Options:

4 1/2 Inch

Shape Options:

Rectangular

Width Options:

1 5/8 Inch

Type Options:

Surface Mount

Make:

Universal Items

MSRP:

$14.25

Was:

Qty in Cart: 0

Price:

MSRP:

$14.25

Was:

Subtotal:
2.5 Inch 8 Diode Clearance Marker LED Light- Amber LED/ Amber lens

MAXXIMA

MSRP:

$9.06

Was:

2.5 Inch 8 Diode Amber Clearance Marker LED Light W/ Amber LensUpgrade your truck's visibility and style with this 2.5 Inch 8 Diode Clearance Marker LED Light featuring bright amber LEDs and a...

MX-M16280ABS

SKU:

MX-M16280ABS

Material Options:

Plastic/Poly

Color:

Amber

Diameter Options:

2 1/2 Inch

Shape Options:

Round

Type Options:

Grommet Mount

Product Type:

Lighting

Make:

Universal Items

MSRP:

$9.06

Was:

Qty in Cart: 0

Price:

MSRP:

$9.06

Was:

Subtotal:
16.25 X 2.13 Inch Low Profile Lighting ID Bar- Red LED/ Red Lens

MAXXIMA

MSRP:

$44.09

Was:

16.25 X 2.13 Inch Red Low Profile Lighting ID Bar W/ Red LensUpgrade your truck's safety and visibility with this 16.25 x 2.13 Inch Low Profile Lighting ID Bar featuring bright red LEDs and a durable...

MX-M09410R-RM3

SKU:

MX-M09410R-RM3

Finish Options:

Black Powder Coat

Color:

Red

Product Type:

Lighting

Length Options:

16 1/4 Inch

Material Options:

Aluminum

Type Options:

Surface Mount

Height Options:

2 Inch

Make:

Universal Items

MSRP:

$44.09

Was:

Qty in Cart: 0

Price:

MSRP:

$44.09

Was:

Subtotal:
2.5 Inch Round Auxiliary Park Turn LED Light- Amber LED/ Amber Lens

MAXXIMA

MSRP:

$11.22

Was:

2.5 Inch Amber Round Auxiliary Park Turn LED Light W/ Amber LensEnhance safety and visibility with this premium auxiliary park turn LED light, designed in a compact 2.5 inch round form. The amber...

MX-M11300YAT

SKU:

MX-M11300YAT

Material Options:

Plastic/Poly

Diameter Options:

2 1/2 Inch

Color:

Amber

Product Type:

Lighting

Make:

Universal Items

MSRP:

$11.22

Was:

Qty in Cart: 0

Price:

MSRP:

$11.22

Was:

Subtotal:
2 Inch Round Clearance Marker LED Light- Amber LED/ Amber lens

MAXXIMA

MSRP:

$10.79

Was:

2 Inch Amber Round Clearance Marker LED Light W/ Amber lensBoost your truck's lighting system with this 2 inch round amber LED clearance marker light designed for performance and durability...

MX-M09100ABS

SKU:

MX-M09100ABS

Material Options:

Plastic/Poly

Color:

Amber

Diameter Options:

2 Inch

Type Options:

Grommet Mount

Product Type:

Lighting

Make:

Universal Items

MSRP:

$10.79

Was:

Qty in Cart: 0

Price:

MSRP:

$10.79

Was:

Subtotal:
3 Diode Oval Courtesy LED Light W/ Bezel- Red LED/ Red Lens

MAXXIMA

MSRP:

$9.06

Was:

3 Diode Red Oval Courtesy LED Light W/ Bezel W/ Red LensEnhance your truck's visibility and style with this 3 Diode Oval Courtesy LED Light with Bezel. Built with a rugged stainless steel housing and...

MX-LED-300R

SKU:

MX-LED-300R

Product Type:

Lighting

Color:

Red

Material Options:

Plastic/Poly

Style Options:

Stainless Steel Housing

Make:

Universal Items

MSRP:

$9.06

Was:

Qty in Cart: 0

Price:

MSRP:

$9.06

Was:

Subtotal:
Stainless Steel DPF Gasket For Cummins ISB 6.7, ISC 8.3, ISL 8.9 Engines Replaces 2866636

DAYTON / DORMAN

MSRP:

$13.21

Was:

Diesel Particulate Filter Gasket W/ 3.86 Inch ID and 4.65 Inch OD Replaces 2866636 Fits Cummins ISB 6.7, ISC 8.3, ISL 8.9 EnginesRestore reliable exhaust sealing with this Stainless Steel DPF Gasket...

29-08090002

SKU:

29-08090002

Style Options:

Cummins

Shape Options:

Round

Product Type:

Exhaust

Material Options:

Stainless Steel

Make:

Universal Items

MSRP:

$13.21

Was:

Qty in Cart: 0

Price:

MSRP:

$13.21

Was:

Subtotal:
EGR Valve W/ 3 Mounting Holes & Exhaust Port For Cummins ISM 10.8L Engine Replaces 3101917, 3102317, 3102745

DAYTON / DORMAN

MSRP:

$669.99

Was:

EGR Valve W/ 3 Mounting Holes & Exhaust Port Replaces 3101917, 3102317, 3102745 Fits Cummins ISM 10.8L EngineMaintain emissions compliance and dependable engine performance with this EGR Valve,...

29-07110013

SKU:

29-07110013

Style Options:

Cummins

Product Type:

Engine Parts

Make:

Universal Items

MSRP:

$669.99

Was:

Qty in Cart: 0

Price:

MSRP:

$669.99

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.