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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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  • FREE SHIPPING OVER $249
    Purple 360 Degree Light Burst Watermelon LED Light Mounting Kit W/ Clear Lens

    Purple 360 Degree Light Burst Watermelon LED Light Mounting Kit W/ Clear Lens

    UNITED PACIFIC

    $42.99
    Purple 360 Degree Light Burst Watermelon LED Light Mounting Kit W/ Stainless Steel Plate & Chrome Bezel* High Quality Light Mounting Kit* Watermelon Style* 360 Degree Light Burst Effect* Fully...
    09-160103230
    SKU:
    09-160103230
    Finish Options:
    Polished
    Style Options:
    Watermelon
    Color:
    Purple
    Degree Options:
    360
    Material Options:
    Glass
    Product Type:
    Lighting
    Location:
    Made In USA
    Type Options:
    Flush Mount
    Make:
    Universal Items
    $42.99
    Qty in Cart: 0
    Price:
    $42.99
    Subtotal:
  • Polished Aluminum 80 Inch Single Axle Fender W/ Rolled Edge & 26 Inch Drop

    Polished Aluminum 80 Inch Single Axle Fender W/ Rolled Edge & 26 Inch Drop

    TRUX ACCESSORIES

    $713.99
    80 Inch Polished Aluminum Single Axle Fender W/ Rolled Edge & 26 Inch Drop* High Quality Single Axle Fender* Made Of Aluminum* Polished Finish* Designed To Fit 43.5 Inch OD Tires* Rolled Edge Design*...
    09-11010111
    SKU:
    09-11010111
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $713.99
    Qty in Cart: 0
    Price:
    $713.99
    Subtotal:
  • Stainless Steel Half Fender Mounting Kit W/ Hardware

    Stainless Steel Half Fender Mounting Kit W/ Hardware

    TRUX ACCESSORIES

    $143.99
    Half Fender Mounting Kit Stainless Steel W/ Hardware* High Quality Half Fender Mounting Kit* Made Of 14 Gauge Stainless Steel* Smooth Finish* Designed For Mounting Half Tandem Fenders (Fenders Not...
    09-11100263
    SKU:
    09-11100263
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $143.99
    Qty in Cart: 0
    Price:
    $143.99
    Subtotal:
  • FREE SHIPPING OVER $249
    3157 Incandescent Bulb S 8 DF Wedge 2 Pack

    3157 Incandescent Bulb S 8 DF Wedge 2 Pack

    UNITED PACIFIC

    $7.99
    2 Pack 3157 Incandescent Bulb S 8 DF Wedge* High Quality Incandescent Bulb* Number 3157 Bulb* S-8 D.F. Wedge* (W2.5x16q)12.8/ 14V 2.10/ .59A 32/3CP(P27/7W)* Sold As Pack (2)* Warranty On Incandescent...
    09-16000223
    SKU:
    09-16000223
    Product Type:
    Lighting
    Make:
    Universal Items
    $7.99
    Qty in Cart: 0
    Price:
    $7.99
    Subtotal:
  • Galvanized Steel 60 Inch 4 Ribbed Half Fenders W/ Beaded Edge

    Galvanized Steel 60 Inch 4 Ribbed Half Fenders W/ Beaded Edge

    TRUX ACCESSORIES

    $286.99
    60 Inch Galvanized Steel 4 Ribbed Half Fenders W/ Beaded Edge* High Quality Half Fender* Made Of 16 Gauge Galvanized Steel* Designed To Fit 43.5 Inch OD Tires* Thin Beaded Edge Style* 4 Ribbed...
    09-110602000
    SKU:
    09-110602000
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $286.99
    Qty in Cart: 0
    Price:
    $286.99
    Subtotal:
  • Stainless Steel Full Fender Mounting Kit W/ 2 Angled Fender Brackets & Painted Black

    Stainless Steel Full Fender Mounting Kit W/ 2 Angled Fender Brackets & Painted Black

    TRUX ACCESSORIES

    $345.99
    Full Fender Mounting Kit Stainless Steel W/ 2 Angled Fender Brackets & Painted Black* High Quality Full Fender Mounting Kit* Made Of 14 Gauge Stainless Steel* Designed To Mount Polycarbonate Full...
    09-11100264
    SKU:
    09-11100264
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $345.99
    Qty in Cart: 0
    Price:
    $345.99
    Subtotal:
  • Stainless Steel Half Tandem Fender Mounting Kit W/ 2 Angled Fender Brackets & Painted Black

    Stainless Steel Half Tandem Fender Mounting Kit W/ 2 Angled Fender Brackets & Painted Black

    TRUX ACCESSORIES

    $196.99
    Half Tandem Fender Mounting Kit Stainless Steel W/ 2 Angled Fender Brackets & Painted Black* High Quality Half Tandem Fender Mounting Kit* Made Of 14 Gauge Stainless Steel* Designed For Mounting...
    09-11100266
    SKU:
    09-11100266
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $196.99
    Qty in Cart: 0
    Price:
    $196.99
    Subtotal:
  • LC 60 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Extended OD

    LC 60 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Extended OD

    LINCOLN CHROME

    $523.99
    60 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Extended OD By Lincoln Chrome* High Quality Exhaust Top Stack* Made Of Chrome-Plated Steel* West Coast Curved Top Style* Dimensions:  - 60 Inch...
    09-08011462
    SKU:
    09-08011462
    Diameter Options:
    7 Inch
    Material Options:
    Steel
    Style Options:
    West Coast Turn
    Location:
    Made In USA
    Height Options:
    60 Inch
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Make:
    Universal Items
    $523.99
    Qty in Cart: 0
    Price:
    $523.99
    Subtotal:
  • Black Steel Full Fender Mounting Kit W/ Hardware

    Black Steel Full Fender Mounting Kit W/ Hardware

    TRUX ACCESSORIES

    $415.99
    Full Fender Mounting Kit Black Steel W/ Hardware* High Quality Full Fender Mounting Kit* Made Of 14 Gauge Stainless Steel* Designed To Mount Polycarbonate Full Tandem Fenders (Fenders Not Included)*...
    09-11100256
    SKU:
    09-11100256
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $415.99
    Qty in Cart: 0
    Price:
    $415.99
    Subtotal:
  • Stainless Steel Super Single Axle Fender Mounting Kit W/ Hardware

    Stainless Steel Super Single Axle Fender Mounting Kit W/ Hardware

    TRUX ACCESSORIES

    $608.99
    Super Single Axle Fender Mounting Kit Stainless Steel W/ Hardware* High Quality Super Single Axle Fender Mounting Kit* Made Of 14 Gauge Stainless Steel* Designed For Mounting Super Single Axle...
    09-11100261
    SKU:
    09-11100261
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $608.99
    Qty in Cart: 0
    Price:
    $608.99
    Subtotal:
  • Galvanized Steel 80 Inch Single Axle Fender W/ Thin Beaded Edge

    Galvanized Steel 80 Inch Single Axle Fender W/ Thin Beaded Edge

    TRUX ACCESSORIES

    $348.99
    80 Inch Single Axle Fender Galvanized Steel W/ Thin Beaded Edge* High Quality Single Axle Fender* Made Of Galvanized Steel* Thin Beaded Edge Design* Fully Ribbed* 80 Inch Overall Length* Sold As...
    09-110601000
    SKU:
    09-110601000
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $348.99
    Qty in Cart: 0
    Price:
    $348.99
    Subtotal:
  • Hogebuilt Stainless Steel 68 Inch Super Single Half Tandem Fender W/ 3 Inch

    Hogebuilt Stainless Steel 68 Inch Super Single Half Tandem Fender W/ 3 Inch

    HOGEBUILT FENDERS

    $1,139.99
    68 Inch Super Single Half Tandem Fender Stainless Steel W/ 3 Inch Flange By Hogebuilt* High Quality Super Single Half Tandem Fender* Made Of 430 Stainless Steel* Mirror Shine Finish* Includes:  - (1)...
    09-11030369
    SKU:
    09-11030369
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $1,139.99
    Qty in Cart: 0
    Price:
    $1,139.99
    Subtotal:
  • Hogebuilt Stainless Steel 72 Inch Super Single Half Tandem Fender W/ 3 Inch

    Hogebuilt Stainless Steel 72 Inch Super Single Half Tandem Fender W/ 3 Inch

    HOGEBUILT FENDERS

    $1,167.99
    72 Inch Super Single Half Tandem Fender Stainless Steel W/ 3 Inch Flange By Hogebuilt* High Quality Super Single Half Tandem Fender* Made Of 430 Stainless Steel* Mirror Shine Finish* Includes:  - (1)...
    09-11030370
    SKU:
    09-11030370
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $1,167.99
    Qty in Cart: 0
    Price:
    $1,167.99
    Subtotal:
  • Stainless Steel 66 Inch 4 Ribbed Single Axle Fender W/ Beaded Edge & 21 Inch Drop

    Stainless Steel 66 Inch 4 Ribbed Single Axle Fender W/ Beaded Edge & 21 Inch Drop

    TRUX ACCESSORIES

    $375.99
    66 Inch Stainless Steel 4 Ribbed Single Axle Fender W/ Beaded Edge & 21 Inch Drop* High Quality Half Fender* Made Of 20 Gauge Galvanized Steel* Designed To Fit 43.5 Inch OD Tires* Thin Beaded Edge...
    09-11030249
    SKU:
    09-11030249
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $375.99
    Qty in Cart: 0
    Price:
    $375.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Zinc Plated Steel Deck Plate Mounting Kit

    Zinc Plated Steel Deck Plate Mounting Kit

    AUTOMANN USA

    $12.99
    Deck Plate Mounting Kit Zinc Plated Steel* High Quality Deck Plate Mounting Kit* Made Of Zinc Plated Steel* Mounting Hardware For Deck Plate * Deck Plate Not Included* Sold Individually* Warranty On...
    09-05030113
    SKU:
    09-05030113
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Material Options:
    Steel
    Finish Options:
    Zinc-Plated
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $12.99
    Qty in Cart: 0
    Price:
    $12.99
    Subtotal:
  • Stainless Steel 80 Inch 4 Ribbed Single Axle Fender W/ Beaded Edge & 26 Inch Drop

    Stainless Steel 80 Inch 4 Ribbed Single Axle Fender W/ Beaded Edge & 26 Inch Drop

    TRUX ACCESSORIES

    $246.99
    80 Inch Stainless Steel 4 Ribbed Single Axle Fender W/ Beaded Edge & 26 Inch Drop* High Quality Single Axle Fender* Made Of 20 Gauge Stainless Steel* Designed To Fit 43 Inch OD Ties* Thin Beaded Edge...
    09-110301019
    SKU:
    09-110301019
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $246.99
    Qty in Cart: 0
    Price:
    $246.99
    Subtotal:
  • Smooth Aluminum Toolbox W/ Roll Up Door 36 X 24 X 24 Inch

    Smooth Aluminum Toolbox W/ Roll Up Door 36 X 24 X 24 Inch

    ICONIC

    $1,983.99
    36 X 24 X 24 Inch Smooth Aluminum Toolbox W/ Roll Up Door* High Quality Toolbox* Made Of 1/8 Inch Aluminum* Roll Up Door Style* Includes:  - Smooth Body  - Roll Up Door  - Full Width Stainless Steel...
    09-020100867
    SKU:
    09-020100867
    Length Options:
    36 Inch
    Style Options:
    Underbody Style
    Finish Options:
    Smooth
    Material Options:
    Aluminum
    Product Type:
    Toolboxes
    Height Options:
    24 Inch
    Location:
    Made In USA
    Width Options:
    24 Inch
    Make:
    Universal Items
    $1,983.99
    Qty in Cart: 0
    Price:
    $1,983.99
    Subtotal:
  • Stainless Steel 55 Inch Single Axle Fender W/ Flange & 17 Inch Drop

    Stainless Steel 55 Inch Single Axle Fender W/ Flange & 17 Inch Drop

    TRUX ACCESSORIES

    $622.99
    55 Inch Stainless Steel Single Axle Fender W/ Flange & 17 Inch Drop* High Quality Single Axle Fender* Made Of 16 Gauge Stainless Steel* Designed To Fit Lift Axles* With Flange* Dimensions:  - 55 Inch...
    09-110301018
    SKU:
    09-110301018
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $622.99
    Qty in Cart: 0
    Price:
    $622.99
    Subtotal:
  • LC 48 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Inch Extended OD

    LC 48 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Inch Extended OD

    LINCOLN CHROME

    $442.99
    Chrome West Coast Exhaust Top Stack 48 Inch W/ 7-5 Inch Extended OD By Lincoln Chrome* High Quality Exhaust Top Stack* Made Of Chrome-Plated Steel* West Coast Curved Top Style* Dimensions:  - 48 Inch...
    09-087548071
    SKU:
    09-087548071
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Location:
    Made In USA
    Material Options:
    Steel
    Height Options:
    48 Inch
    Style Options:
    West Coast Turn
    Diameter Options:
    7 Inch
    Make:
    Universal Items
    $442.99
    Qty in Cart: 0
    Price:
    $442.99
    Subtotal:
  • LC 8 X 72 Chrome West Coast Exhaust Top Stack

    LC 8 X 72 Chrome West Coast Exhaust Top Stack

    LINCOLN CHROME

    $830.99
    8 X 72 Inch West Coast Exhaust Top Stack By Lincoln Chrome* High Quality Exhaust Top Stack* Made Of Chrome-Plated Steel* West Coast Curved Top Style* Works With Seamless Design Elbows and Pipes*...
    09-088072083
    SKU:
    09-088072083
    Height Options:
    72 Inch
    Style Options:
    West Coast Turn
    Diameter Options:
    8 Inch
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Universal Items
    $830.99
    Qty in Cart: 0
    Price:
    $830.99
    Subtotal:
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Adding your products to cart

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.


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