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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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  • Qty in Cart
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  • Price
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  • 4 Inch Chrome Plated Steel Exhaust Bracket W/ Flat U-Bolt

    4 Inch Chrome Plated Steel Exhaust Bracket W/ Flat U-Bolt

    GRAND GENERAL

    $12.45
    Chrome Exhaust Bracket 4 Inch W/ Flat U-BoltAchieve a secure and stable exhaust setup with this 4 Inch Chrome Plated Steel Exhaust Bracket with Flat U-Bolt. Manufactured from durable chrome plated...
    09-080000074
    SKU:
    09-080000074
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Make:
    Universal Items
    $12.45
    Qty in Cart: 0
    Price:
    $12.45
    Subtotal:
  • Aluminum In Frame Toolbox W/ Smooth Body & Diamond Plate Lid - 13 Inches

    Aluminum In Frame Toolbox W/ Smooth Body & Diamond Plate Lid - 13 Inches

    ICONIC

    $599.99
    18 X 23 X 13 Inch In-Frame ToolboxOptimize your truck's storage with the In-Frame Toolbox with Smooth Body Checker Lid - 13 Inches, built to mount securely inside your frame rails and save valuable...
    09-050200004
    SKU:
    09-050200004
    Material Options:
    Aluminum
    Length Options:
    18 Inch
    Finish Options:
    Smooth
    Product Type:
    Toolboxes
    Height Options:
    13 Inch
    Width Options:
    23 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $599.99
    Qty in Cart: 0
    Price:
    $599.99
    Subtotal:
  • Bulldog HD Shock Absorber 6.57 Inch Stroke Replaces 555014

    Bulldog HD Shock Absorber 6.57 Inch Stroke Replaces 555014

    BULLDOG HD SHOCKS

    $70.99
    Heavy Duty Universal Shock Absorber- 12.95 Inch Compressed LengthBoost ride quality and handling with the Bulldog HD Shock Absorber 6.57-inch stroke. Built with robotic welds and a semi-gloss black...
    09-05000004
    SKU:
    09-05000004
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $70.99
    Qty in Cart: 0
    Price:
    $70.99
    Subtotal:
  • Smooth Aluminum Big Mouth Step Box W/ Diamond Plate Lid- 16 X 29.13 X 24 Inch

    Smooth Aluminum Big Mouth Step Box W/ Diamond Plate Lid- 16 X 29.13 X 24 Inch

    ICONIC

    $729.99
    16 X 29.13 X 24 Inch Smooth Aluminum Big Mouth Step Box W/ Diamond Plate LidBoost your truck's efficiency with the Smooth Aluminum Big Mouth Step Box, built for rugged use and professional appearance...
    09-020100783
    SKU:
    09-020100783
    Finish Options:
    Smooth
    Product Type:
    Toolboxes
    Height Options:
    24 Inch
    Material Options:
    Aluminum
    Width Options:
    29 Inch
    Length Options:
    16 Inch
    Make:
    Universal Items
    $729.99
    Qty in Cart: 0
    Price:
    $729.99
    Subtotal:
  • Enclosed Style Smooth Aluminum Cab Rack W/ 3 Exterior Cabinets & Interior Shelf In Center Cabinets 78 X 68 X 18 Inch

    Enclosed Style Smooth Aluminum Cab Rack W/ 3 Exterior Cabinets & Interior Shelf In Center Cabinets 78 X 68 X 18 Inch

    ICONIC

    $3,616.99
    Smooth Aluminum Cab Rack W/ 2 Chain Hangers & Stainless Steel HingesKeep your tools and equipment organized with the Smooth Aluminum 3 Door Cab Rack featuring an interior shelf and chain hangers...
    09-021100051
    SKU:
    09-021100051
    Height Options:
    68 Inch
    Width Options:
    78 Inch
    Finish Options:
    Smooth
    Length Options:
    18 Inch
    Product Type:
    Cargo Control
    Material Options:
    Aluminum
    Make:
    Universal Items
    $3,616.99
    Qty in Cart: 0
    Price:
    $3,616.99
    Subtotal:
  • Black Steel Spring Loaded Straight Mud Flap Hanger W/ 2.5 Inch Bolt Pattern- 30 Inch

    Black Steel Spring Loaded Straight Mud Flap Hanger W/ 2.5 Inch Bolt Pattern- 30 Inch

    GRAND GENERAL

    $152.99
    30 Inch Black Spring Loaded Straight Mud Flap Hanger W/ 2.5 Inch Bolt PatternKeep your mud flaps steady and functional with the 30 Inch Black Steel Spring Loaded Straight Mud Flap Hanger. Made of...
    09-050700286
    SKU:
    09-050700286
    Color:
    Black
    Style Options:
    Spring Loaded
    Product Type:
    Mud Flaps
    Length Options:
    30 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    $152.99
    Qty in Cart: 0
    Price:
    $152.99
    Subtotal:
  • Bulldog HD Shock Absorber 9.09 Inch Stroke Replaces 555014

    Bulldog HD Shock Absorber 9.09 Inch Stroke Replaces 555014

    BULLDOG HD SHOCKS

    $41.08
    Heavy Duty Universal Shock Absorber- 15.08 Inch Compressed Length Replaces 555014Restore control and stability to your vehicle with the Bulldog HD Shock Absorber, 9.09-inch stroke. Built for...
    09-05000003
    SKU:
    09-05000003
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $41.08
    Qty in Cart: 0
    Price:
    $41.08
    Subtotal:
  • Plastic Full Moon Bumper Guide Lens- Blue

    Plastic Full Moon Bumper Guide Lens- Blue

    GRAND GENERAL

    $1.02
    Blue Full Moon Bumper Guide LensGive your truck a stylish and functional enhancement with the Blue Plastic Full Moon Bumper Guide Lens. Made from sturdy plastic in a full moon style, this lens adds a...
    09-012023
    SKU:
    09-012023
    Diameter Options:
    1 Inch
    Color:
    Blue
    Style Options:
    Thread On
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Make:
    Universal Items
    $1.02
    Qty in Cart: 0
    Price:
    $1.02
    Subtotal:
  • Chrome Plated Aluminum Small Gauge Cover W/ Visor- Snap On For Peterbilt 2005 & Newer

    Chrome Plated Aluminum Small Gauge Cover W/ Visor- Snap On For Peterbilt 2005 & Newer

    LIFETIME NUT COVERS

    $8.87
    Snap On Chrome Aluminum Small Gauge Cover W/ Visor By Lifetime Nut CoversRefresh your Peterbilt dashboard with the Snap-On Chrome Plated Aluminum Small Gauge Cover with Visor from Lifetime Nut Covers...
    01-15020307
    SKU:
    01-15020307
    Product Type:
    Interior
    Material Options:
    Aluminum
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $8.87
    Qty in Cart: 0
    Price:
    $8.87
    Subtotal:
  • Chrome Plated Aluminum Dash Vent Cover- Snap On For Peterbilt 2006 & Newer

    Chrome Plated Aluminum Dash Vent Cover- Snap On For Peterbilt 2006 & Newer

    LIFETIME NUT COVERS

    $9.99
    Snap On Chrome Aluminum Dash Vent Cover By Lifetime Nut CoversAdd a polished finish to your Peterbilt 2006 and newer dashboard with the Snap-On Chrome Plated Aluminum Dash Vent Cover by Lifetime Nut...
    01-150400091
    SKU:
    01-150400091
    Product Type:
    Interior
    Material Options:
    Aluminum
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $9.99
    Qty in Cart: 0
    Price:
    $9.99
    Subtotal:
  • Chrome Plated Aluminum Tractor & Trailer Knob Set- Snap On For Peterbilt 2006 & Newer

    Chrome Plated Aluminum Tractor & Trailer Knob Set- Snap On For Peterbilt 2006 & Newer

    LIFETIME NUT COVERS

    $42.99
    Snap On Chrome Aluminum Tractor & Trailer Knob Set By Lifetime Nut CoversElevate your Peterbilt cab interior with the Snap-On Chrome Plated Aluminum Tractor & Trailer Knob Set by Lifetime Nut Covers...
    01-150100263
    SKU:
    01-150100263
    Product Type:
    Interior
    Material Options:
    Aluminum
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $42.99
    Qty in Cart: 0
    Price:
    $42.99
    Subtotal:
  • Chrome Plated Aluminum Control Knob- Snap On For Peterbilt 2001-2005

    Chrome Plated Aluminum Control Knob- Snap On For Peterbilt 2001-2005

    LIFETIME NUT COVERS

    $11.81
    Snap On Chrome Aluminum Control Knob By Lifetime Nut CoversImprove your Peterbilt interior controls with the Snap-On Chrome Plated Aluminum Control Knob from Lifetime Nut Covers. Made of durable...
    01-150100262
    SKU:
    01-150100262
    Material Options:
    Aluminum
    Finish Options:
    Chrome-Plated
    Product Type:
    Interior
    Make:
    Peterbilt
    $11.81
    Qty in Cart: 0
    Price:
    $11.81
    Subtotal:
  • Belmor Chrome Hood Shield Mounting Hardware Kit For Peterbilt 359, 378 & 379

    Belmor Chrome Hood Shield Mounting Hardware Kit For Peterbilt 359, 378 & 379

    BELMOR

    $22.65
    Hood Shield Mounting Hardware Kit By BelmorSecurely attach your Belmor Mustache Hood Protector to Peterbilt 359, 378, or 379 with the Chrome Hood Shield Mounting Hardware Kit. This chrome-plated,...
    01-12200071
    SKU:
    01-12200071
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Hood Parts & Acc.
    Style Options:
    Mustache Style
    Make:
    Peterbilt
    $22.65
    Qty in Cart: 0
    Price:
    $22.65
    Subtotal:
  • Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 12 Bullseye Light Holes For Peterbilt 359 & 379

    Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 12 Bullseye Light Holes For Peterbilt 359 & 379

    ROADWORKS

    $120.99
    3.5 Inch SS Cab Panel W/ 6 Bullseye Light Holes Per Panel By Roadworks Fits Peterbilt 359 & 379Boost the style and functionality of your Peterbilt 359, 379 with the Roadworks 3.5 Inch Stainless Steel...
    01-0912102003
    SKU:
    01-0912102003
    Location:
    Made In USA
    Light Options:
    Without Lights
    Cab Style:
    Day Cab
    Height Options:
    3 1/2 Inch
    Material Options:
    Stainless Steel
    Product Type:
    Exterior
    Make:
    Peterbilt
    $120.99
    Qty in Cart: 0
    Price:
    $120.99
    Subtotal:
  • Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 14 Bullseye Light Holes For Peterbilt 379 DPF & 388/389 Non-DPF

    Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 14 Bullseye Light Holes For Peterbilt 379 DPF & 388/389 Non-DPF

    ROADWORKS

    $151.99
    3.5 Inch SS Cab Panel W/ 7 Bullseye Light Holes Per Panel By RoadworksOutfit your Peterbilt 379 DPF or non-DPF 388/389 day cab with Roadworks 3.5 Inch Stainless Steel Cab Panels featuring 14 Bullseye...
    01-0912101994
    SKU:
    01-0912101994
    Light Options:
    Without Lights
    Height Options:
    3 1/2 Inch
    Product Type:
    Exterior
    Cab Style:
    Day Cab
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Peterbilt
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 14 Supernova Light Holes For Peterbilt 379 DPF & 388/389 Non-DPF

    Roadworks 3.5 Inch Stainless Steel Cab Panel W/ 14 Supernova Light Holes For Peterbilt 379 DPF & 388/389 Non-DPF

    ROADWORKS

    $151.99
    3.5 Inch SS Cab Panel W/ 7 Supernova Light Holes Per Panel By RoadworksEnhance your Peterbilt 379 DPF or non-DPF 388/389 day cab with Roadworks 3.5 Inch Stainless Steel Cab Panels, complete with 14...
    01-0912101993
    SKU:
    01-0912101993
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Height Options:
    3 1/2 Inch
    Light Options:
    Without Lights
    Product Type:
    Exterior
    Make:
    Peterbilt
    $151.99
    Qty in Cart: 0
    Price:
    $151.99
    Subtotal:
  • Roadworks Stainless Steel Rectangular Style Cowl Extensions W/ 6 Super 21 Light Holes For Peterbilt 379

    Roadworks Stainless Steel Rectangular Style Cowl Extensions W/ 6 Super 21 Light Holes For Peterbilt 379

    ROADWORKS

    $241.99
    SS Rectangular Style Cowl Extensions W/ 3 Super 21 Light Holes Per Panel By Roadworks Fits Peterbilt 379Refresh your Peterbilt 379 cab with Roadworks Stainless Steel Rectangular Style Cowl...
    01-0912101944
    SKU:
    01-0912101944
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Light Options:
    Without Lights
    Shape Options:
    Rectangular
    Product Type:
    Exterior
    Make:
    Peterbilt
    $241.99
    Qty in Cart: 0
    Price:
    $241.99
    Subtotal:
  • Roadworks Stainless Steel Wide Style Cowl Extensions W/ 6 Super 21 Style Light Holes For Peterbilt 379

    Roadworks Stainless Steel Wide Style Cowl Extensions W/ 6 Super 21 Style Light Holes For Peterbilt 379

    ROADWORKS

    $241.99
    SS Wide Style Cowl Extensions W/ 3 Super 21 Style Light Holes Per Panel By Roadworks Fits Peterbilt 379Strengthen and stylize your Peterbilt 379 cab with Roadworks Stainless Steel Wide Style Cowl...
    01-0912101934
    SKU:
    01-0912101934
    Product Type:
    Exterior
    Material Options:
    Stainless Steel
    Style Options:
    Wide Style
    Location:
    Made In USA
    Light Options:
    Without Lights
    Make:
    Peterbilt
    $241.99
    Qty in Cart: 0
    Price:
    $241.99
    Subtotal:
  • 6 Inch Fiberglass Cab/Cowl/Sleeper Panel Set For Peterbilt W/ 48 Inch Sleeper

    6 Inch Fiberglass Cab/Cowl/Sleeper Panel Set For Peterbilt W/ 48 Inch Sleeper

    TALLADEGA FIBERGLASS

    $787.50
    6 Inch Fiberglass Cab/Cowl/Sleeper Panel Set Fits Peterbilt W/ 48 Inch SleeperTransform your Peterbilt 48-inch sleeper with the 6 Inch Fiberglass Cab/Cowl/Sleeper Panel Set. Constructed from durable...
    01-091201837
    SKU:
    01-091201837
    Length Options:
    48 Inch
    Height Options:
    6 Inch
    Material Options:
    Fiberglass
    Product Type:
    Exterior
    Make:
    Peterbilt
    $787.50
    Qty in Cart: 0
    Price:
    $787.50
    Subtotal:
  • 9 X 36 Inch Aluminum Sleeper Panel W/ Tank Notch For Peterbilt 379

    9 X 36 Inch Aluminum Sleeper Panel W/ Tank Notch For Peterbilt 379

    ARANDA TRUCK ACCESSORIES

    $413.99
    9 X 36 Inch Sleeper Panel With Tank Notch Fits Peterbilt 379Refresh the look of your Peterbilt 379 with the 9 X 36 Inch Aluminum Sleeper Panel featuring an integrated tank notch. Constructed from...
    01-091201836
    SKU:
    01-091201836
    Location:
    Made In USA
    Length Options:
    36 Inch
    Height Options:
    9 Inch
    Product Type:
    Exterior
    Material Options:
    Aluminum
    Make:
    Peterbilt
    $413.99
    Qty in Cart: 0
    Price:
    $413.99
    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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