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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.

  • Product
  • Qty in Cart
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  • Price
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  • Caramel Carpet Kit For Peterbilt W/ 70 Inch Sleeper

    Caramel Carpet Kit For Peterbilt W/ 70 Inch Sleeper

    AUTO CUSTOM CARPETS

    $402.99
    70 Inch Sleeper Carpet Kit- Caramel Fits PeterbiltTransform your Peterbilt sleeper with this high-quality Caramel Carpet Kit. Featuring 1/8-inch carpet and 1/2-inch bonded insulation, it fits 70-inch...
    01-1540102
    SKU:
    01-1540102
    Position:
    Kit Full
    Product Type:
    Interior
    Color:
    Brown
    Length Options:
    70 Inch
    Make:
    Peterbilt
    $402.99
    Qty in Cart: 0
    Price:
    $402.99
    Subtotal:
  • Black Cab Carpet For Peterbilt

    Black Cab Carpet For Peterbilt

    AUTO CUSTOM CARPETS

    $405.99
    Peterbilt Cab Carpet- BlackKeep your Peterbilt cab looking fresh with this Black Cab Carpet. Engineered for strength and comfort, it shields your flooring while adding a polished, professional look...
    01-15110019
    SKU:
    01-15110019
    Product Type:
    Interior
    Color:
    Black
    Make:
    Peterbilt
    $405.99
    Qty in Cart: 0
    Price:
    $405.99
    Subtotal:
  • Stainless Steel AC Heater Control Panel Trim With Bunk Heat Switch For Peterbilt

    Stainless Steel AC Heater Control Panel Trim With Bunk Heat Switch For Peterbilt

    ROADWORKS

    $29.98
    SS Heating And Air Conditioning Control Panel Trim Fits Peterbilt* High Quality Control Panel Trim* Made Of Stainless Steel* With Bunk Heat Switch* Made In USA* Sold Individually* Warranty On Control...
    01-1504046
    SKU:
    01-1504046
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Product Type:
    Interior
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $29.98
    Qty in Cart: 0
    Price:
    $29.98
    Subtotal:
  • AC/Heater Control Panel W No Bunk Heat Switch - For Peterbilt

    AC/Heater Control Panel W No Bunk Heat Switch - For Peterbilt

    ROADWORKS

    $31.49
    Control Panel For AC/Heater W/ Out Bunk Heat Switch* High Quality Control Panel* For A/C And Heater* No Bunk Heat Switch* Stainless Steel* Sold Individually* Warranty On Control Panels Against...
    01-1504103
    SKU:
    01-1504103
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Location:
    Made In USA
    Make:
    Peterbilt
    $31.49
    Qty in Cart: 0
    Price:
    $31.49
    Subtotal:
  • Paintable Gray Plastic Wheel Inserts For Peterbilt 357 W/ 22.5 inch Wheels

    Paintable Gray Plastic Wheel Inserts For Peterbilt 357 W/ 22.5 inch Wheels

    CAB FRESH FILTER CO.

    $32.87
    Gray Plastic Wheel Inserts For 22.5 inch WheelsRefresh your Peterbilt 357's wheels with these Paintable Gray Plastic Inserts, compatible with 22.5- and 24.5-inch wheels. High-quality plastic...
    01-200502
    SKU:
    01-200502
    Finish Options:
    Paintable
    Material Options:
    Plastic/Poly
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Product Type:
    Wheels
    Make:
    Peterbilt
    Make:
    Universal Items
    $32.87
    Qty in Cart: 0
    Price:
    $32.87
    Subtotal:
  • Stainless Steel Lower Center Trim For Peterbilt

    Stainless Steel Lower Center Trim For Peterbilt

    ROADWORKS

    $32.12
    SS Lower Center Trim Fits Peterbilt* High Quality Lower Center Trim* Made Of Stainless Steel* Under A/C Heater Controls* Made In USA* Sold Individually* Warranty On Lower Center Trim Against Defects...
    01-1504033
    SKU:
    01-1504033
    Position:
    Lower
    Product Type:
    Interior
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    $32.12
    Qty in Cart: 0
    Price:
    $32.12
    Subtotal:
  • Roadworks Stainless Steel Lower Heater Panel & Door Trim- 2 Piece For Peterbilt

    Roadworks Stainless Steel Lower Heater Panel & Door Trim- 2 Piece For Peterbilt

    ROADWORKS

    $103.99
    SS Lower Heater Panel & Door Trim By RoadworksRefresh your Peterbilt interior with this 2-piece Roadworks Stainless Steel Lower Heater Panel & Door Trim. Crafted from high-quality stainless steel, it...
    01-1504147
    SKU:
    01-1504147
    Product Type:
    Interior
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Peterbilt
    $103.99
    Qty in Cart: 0
    Price:
    $103.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Stainless Steel Left Of AC Panel Trim For Peterbilt

    Stainless Steel Left Of AC Panel Trim For Peterbilt

    ROADWORKS

    $21.59
    Stainless Steel AC Panel Trim Fits Peterbilt* High Quality AC Panel Trim* Made Of Stainless Steel* Driver Side* 2 Piece* Made In USA* Sold Individually* Warranty On AC Panel Trim Against Defects In...
    01-1504041
    SKU:
    01-1504041
    Material Options:
    Stainless Steel
    Position:
    Driver Side
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Product Type:
    Interior
    Make:
    Peterbilt
    $21.59
    Qty in Cart: 0
    Price:
    $21.59
    Subtotal:
  • Stainless Steel 3 Piece ABS Cover Trim For Peterbilt

    Stainless Steel 3 Piece ABS Cover Trim For Peterbilt

    ROADWORKS

    $41.55
    SS ABS Cover Trim Fits Peterbilt* High Quality ABS Cover Trim* Made Of Stainless Steel* 3 Piece* Number 6 In Picture* Made In USA* Sold Individually* Warranty On ABS Cover Trims Against Defects In...
    01-1504049
    SKU:
    01-1504049
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Product Type:
    Interior
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $41.55
    Qty in Cart: 0
    Price:
    $41.55
    Subtotal:
  • Roadworks Stainless Steel Sleeper Roof Trim- Center Only For Peterbilt 379 W/ 63 Inch Sleeper

    Roadworks Stainless Steel Sleeper Roof Trim- Center Only For Peterbilt 379 W/ 63 Inch Sleeper

    ROADWORKS

    $302.99
    SS Center Sleeper Roof Trim By RoadworksEnhance your Peterbilt 379 cab with this Roadworks Stainless Steel Sleeper Roof Center Piece, designed for 63-inch stand-up flat top sleepers. Crafted from...
    01-101500013
    SKU:
    01-101500013
    Product Type:
    Exterior
    Cab Style:
    Flat Top
    Material Options:
    Stainless Steel
    Height Options:
    63 Inch
    Make:
    Peterbilt
    $302.99
    Qty in Cart: 0
    Price:
    $302.99
    Subtotal:
  • Roadworks Stainless Steel Triple Diamond Punched Grille Insert W/ Vertical Grille Bars & Small 1/4 Inch Circles For Peterbilt 379

    Roadworks Stainless Steel Triple Diamond Punched Grille Insert W/ Vertical Grille Bars & Small 1/4 Inch Circles For Peterbilt 379

    ROADWORKS

    $542.99
    SS Triple Diamond Punched Grille Insert W/ Vertical Grille Bars & Small 1/4 Inch Circles By RoadworksMake your Peterbilt 379 front end pop with the Roadworks Triple Diamond Stainless Steel Grille...
    01-1210045
    SKU:
    01-1210045
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Width Options:
    42 Inch
    Product Type:
    Hood Parts & Acc.
    Truck Class:
    Heavy Duty
    Style Options:
    Punched
    Height Options:
    35 Inch
    Make:
    Peterbilt
    $542.99
    Qty in Cart: 0
    Price:
    $542.99
    Subtotal:
  • Roadworks Stainless Steel Fender Guards W/ 6 M1 LED Lights- Amber LED/ Amber Lens For Peterbilt 379

    Roadworks Stainless Steel Fender Guards W/ 6 M1 LED Lights- Amber LED/ Amber Lens For Peterbilt 379

    ROADWORKS

    $363.99
    SS Fender Guards W/ 6 M1 Amber- Amber LED Lights By RoadworksGive your Peterbilt 379 front end a durable, stylish upgrade with these stainless steel Fender Guards from Roadworks. Designed for dual...
    01-1220002
    SKU:
    01-1220002
    Product Type:
    Hood Parts & Acc.
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Make:
    Peterbilt
    $363.99
    Qty in Cart: 0
    Price:
    $363.99
    Subtotal:
  • Roadworks Stainless Steel Ultra Cab Sleeper Roof Trim- Center Only For Peterbilt 379

    Roadworks Stainless Steel Ultra Cab Sleeper Roof Trim- Center Only For Peterbilt 379

    ROADWORKS

    $276.99
    SS Center Ultra Cab Sleeper Roof Trim By RoadworksGive your Peterbilt 379 Ultra Cab a high-quality exterior upgrade with this Roadworks Stainless Steel Roof Trim-Center Piece Only-for 63-inch...
    01-1015001
    SKU:
    01-1015001
    Material Options:
    Stainless Steel
    Cab Style:
    Ultra Cab
    Location:
    Made In USA
    Product Type:
    Exterior
    Height Options:
    63 Inch
    Make:
    Peterbilt
    $276.99
    Qty in Cart: 0
    Price:
    $276.99
    Subtotal:
  • Fiberglass Ultra Cab XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab For Peterbilt

    Fiberglass Ultra Cab XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab For Peterbilt

    DAYCAB COMPANY

    $2,509.99
    Ultra Cab XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab Fits PeterbiltAdd strength, style, and functionality to your Peterbilt with this Fiberglass Ultra Cab XL Standard Day Cab...
    01-0930017
    SKU:
    01-0930017
    Cab Style:
    Ultra Cab
    Product Type:
    Exterior
    Truck Class:
    Heavy Duty
    Position:
    Kit Full
    Material Options:
    Fiberglass
    Make:
    Peterbilt
    $2,509.99
    Qty in Cart: 0
    Price:
    $2,509.99
    Subtotal:
  • 6 Inch Fiberglass Ultra Cab XL Big Window Kit- Tan For Peterbilt

    6 Inch Fiberglass Ultra Cab XL Big Window Kit- Tan For Peterbilt

    DAYCAB COMPANY

    $2,651.99
    6 Inch Tan Ultra Cab XL Big Window KitElevate your cab configuration with this 6 Inch Fiberglass Ultra Cab XL Big Window Kit in Tan designed for the Peterbilt 389 Ultra Cab setup. Featuring a 6-inch...
    01-0930015
    SKU:
    01-0930015
    Truck Class:
    Heavy Duty
    Position:
    Kit Full
    Material Options:
    Fiberglass
    Cab Style:
    Ultra Cab
    Product Type:
    Exterior
    Make:
    Peterbilt
    $2,651.99
    Qty in Cart: 0
    Price:
    $2,651.99
    Subtotal:
  • 3.5 Inch Blank Sanded Stainless Steel Sleeper Panel W/ Extension For Peterbilt W/ 70 Inch Sleeper

    3.5 Inch Blank Sanded Stainless Steel Sleeper Panel W/ Extension For Peterbilt W/ 70 Inch Sleeper

    ROADWORKS

    $271.99
    3.5 X 70 Inch Blank Sanded Sleeper Panel W/ Extension By RoadworksRefresh your Peterbilt 70-inch Ultra Sleeper with this 3.5 Inch Blank Sanded Stainless Steel Sleeper Panel with Extension. Crafted...
    01-1012128
    SKU:
    01-1012128
    Finish Options:
    Paintable
    Location:
    Made In USA
    Light Options:
    Without Lights
    Length Options:
    70 Inch
    Type Options:
    With Extensions
    Truck Class:
    Heavy Duty
    Product Type:
    Exterior
    Height Options:
    3 1/2 Inch
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $271.99
    Qty in Cart: 0
    Price:
    $271.99
    Subtotal:
  • 6 Inch Stainless Steel Darwin Cab- Cowl Panel W/ 28- 2 Inch Round Flat LED Lights- Amber LED/ Clear Lens For Peterbilt 379

    6 Inch Stainless Steel Darwin Cab- Cowl Panel W/ 28- 2 Inch Round Flat LED Lights- Amber LED/ Clear Lens For Peterbilt 379

    ROADWORKS

    $1,308.99
    6 Inch SS Darwin Cab- Cowl Panel W/ 28- 2 Inch Round Flat Amber- Clear LED Lights By RoadworksLight up the highway with this stainless steel 6 Inch Darwin Cab-Cowl Panel engineered specifically for...
    01-09123387
    SKU:
    01-09123387
    Product Type:
    Exterior
    Light Options:
    With Lights
    Height Options:
    6 Inch
    Location:
    Made In USA
    Color:
    Amber
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $1,308.99
    Qty in Cart: 0
    Price:
    $1,308.99
    Subtotal:
  • Fiberglass Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window For Peterbilt

    Fiberglass Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window For Peterbilt

    DAYCAB COMPANY

    $2,766.99
    Unibilt XL Standard Day Cab Conversion Kit W/ 6 Inch Extended Cab & Window Fits PeterbiltUpgrade your Peterbilt with this Fiberglass Unibilt XL Standard Day Cab Conversion Kit with a 6 Inch Extended...
    01-0930042
    SKU:
    01-0930042
    Material Options:
    Fiberglass
    Position:
    Kit Full
    Product Type:
    Exterior
    Cab Style:
    Unibilt
    Style Options:
    Flat Top
    Make:
    Peterbilt
    $2,766.99
    Qty in Cart: 0
    Price:
    $2,766.99
    Subtotal:
  • Aluminum Ultra Cab Day Cab Conversion Kit W/ Window For Peterbilt 378 & 379

    Aluminum Ultra Cab Day Cab Conversion Kit W/ Window For Peterbilt 378 & 379

    DAYCAB COMPANY

    $2,357.99
    Ultra Cab Day Cab Conversion Kit W/ Window Fits Peterbilt 378 & 379Enhance your Peterbilt Ultra Cab with this Aluminum Day Cab Conversion Kit, designed for 378 and 379 models to deliver a durable...
    01-0930023
    SKU:
    01-0930023
    Position:
    Kit Full
    Product Type:
    Exterior
    Cab Style:
    Ultra Cab
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Peterbilt
    $2,357.99
    Qty in Cart: 0
    Price:
    $2,357.99
    Subtotal:
  • Sanguine Full Upholstery Kit For Peterbilt 379 W/ 63 Inch Flat Top Sleeper

    Sanguine Full Upholstery Kit For Peterbilt 379 W/ 63 Inch Flat Top Sleeper

    DAYCAB COMPANY

    $8,142.99
    Peterbilt 379 Full Upholstery Kit- SanguineMake a powerful interior statement with this Sanguine Full Upholstery Kit for the Peterbilt 379 63-inch Flat Top Sleeper. Crafted from premium vinyl, it...
    01-093000025
    SKU:
    01-093000025
    Color:
    Red
    Material Options:
    Vinyl
    Product Type:
    Interior
    Make:
    Peterbilt
    $8,142.99
    Qty in Cart: 0
    Price:
    $8,142.99
    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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