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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
  • Subtotal
  • LC 36 Chrome Bull Hauler Top Stack W/ 6-5 Inch OD Extended Plain End

    LC 36 Chrome Bull Hauler Top Stack W/ 6-5 Inch OD Extended Plain End

    LINCOLN CHROME

    $309.99
    36 Inch Bull Hauler Top Stack W/ 6-5 Inch OD Extended Plain End By Lincoln ChromeEnhance your truck's appearance and exhaust performance with the Bull Hauler Top Stack, built for drivers who want...
    09-086536043E
    SKU:
    09-086536043E
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Diameter Options:
    6 Inch
    Height Options:
    36 Inch
    Material Options:
    Steel
    Style Options:
    Bull Hauler Turn
    Make:
    Universal Items
    $309.99
    Qty in Cart: 0
    Price:
    $309.99
    Subtotal:
  • FREE SHIPPING
    80 Inch Stainless Steel Smooth Single Axle Fenders & Heavy Duty Mounting Kit

    80 Inch Stainless Steel Smooth Single Axle Fenders & Heavy Duty Mounting Kit

    TRUX ACCESSORIES

    $1,251.99
    Smooth Single Axle Fenders & Heavy Duty Mounting Kit Stainless Steel 80 InchUpgrade your truck's protection and appearance with this premium Smooth Single Axle Fender Kit with Heavy Duty Mounting...
    09-110301017K
    SKU:
    09-110301017K
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $1,251.99
    Qty in Cart: 0
    Price:
    $1,251.99
    Subtotal:
  • Iowa Customs Merritt Dynadeck Pogo Stick Plate Only

    Iowa Customs Merritt Dynadeck Pogo Stick Plate Only

    IOWA CUSTOMS

    $124.99
    Stainless Steel Merritt Dynadeck Pogo Stick Plate Only, Snap-On By Iowa CustomsImprove your trailer deck durability and appearance with the Iowa Customs Pogo Stick Plate Only, designed for strength,...
    09-05500180
    SKU:
    09-05500180
    Location:
    Made In USA
    Product Type:
    Air, Electrical, & Safety
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Type Options:
    Snap Mount
    Make:
    Universal Items
    $124.99
    Qty in Cart: 0
    Price:
    $124.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Standard Style Horn Cover Chrome Plated Steel, 7 1/4 To 7 1/2 Inch Diameter

    Standard Style Horn Cover Chrome Plated Steel, 7 1/4 To 7 1/2 Inch Diameter

    GRAND GENERAL

    $17.42
    7 1/4 To 7 1/2 Inch Diameter Chrome Plated Steel Standard Style Horn CoverEnhance your truck's interior styling with the Standard Style Horn Cover, built for durability, fitment accuracy, and...
    09-0513138
    SKU:
    09-0513138
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Style Options:
    Standard
    Material Options:
    Steel
    Make:
    Universal Items
    $17.42
    Qty in Cart: 0
    Price:
    $17.42
    Subtotal:
  • FREE SHIPPING OVER $249
    Black Painted Steel Mounted Bracket For 24 Inch Saddlemount Hydraulic Tank

    Black Painted Steel Mounted Bracket For 24 Inch Saddlemount Hydraulic Tank

    AFTERMARKET

    $134.39
    Mounted Bracket Black Painted Steel Fits 24 Inch Saddlemount Hydraulic TankSecure your hydraulic system with the Stainless Steel Hydraulic Tank Strap, designed for strength, durability, and...
    09-06010018
    SKU:
    09-06010018
    Material Options:
    Steel
    Color:
    Black
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $134.39
    Qty in Cart: 0
    Price:
    $134.39
    Subtotal:
  • Teltek Fuel Pressure PSI Sensor 0 to 150 PSI, 1/8 Inch NPT Thread

    Teltek Fuel Pressure PSI Sensor 0 to 150 PSI, 1/8 Inch NPT Thread

    TELTEK

    $121.99
    0 To 150 PSI Fuel Pressure Sensor W/ 1/8 Inch NPT ThreadEnsure accurate fuel system monitoring with the Teltek Fuel Pressure PSI Sensor, designed for dependable performance in heavy-duty truck and...
    09-071000108
    SKU:
    09-071000108
    Location:
    Made In USA
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $121.99
    Qty in Cart: 0
    Price:
    $121.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Iowa Customs 16 Inch Stainless Steel Rear Center Panel W/ Radius Corners, 5 X 4 Inch Light Holes

    Iowa Customs 16 Inch Stainless Steel Rear Center Panel W/ Radius Corners, 5 X 4 Inch Light Holes

    IOWA CUSTOMS

    Now: $710.39
    Was: $887.99
    Stainless Steel Rear Center Panel W/ Radius Corners 16 Inch, 5 X 4 Inch Light Holes By Iowa CustomsUpgrade your rig's rear lighting setup with this premium Iowa Customs Stainless Steel Rear Center...
    09-05160038
    SKU:
    09-05160038
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Location:
    Made In USA
    Width Options:
    33 Inch
    Height Options:
    16 Inch
    Product Type:
    Bumpers
    Make:
    Universal Items
    Now: $710.39
    Was: $887.99
    Qty in Cart: 0
    Price:
    Now: $710.39
    Was: $887.99
    Subtotal:
  • Iowa Customs Stainless Steel Inserts For Merritt Dyna Deck Flush Mount Deck Plates

    Iowa Customs Stainless Steel Inserts For Merritt Dyna Deck Flush Mount Deck Plates

    IOWA CUSTOMS

    $71.99
    Inserts For Merritt Dyna Deck Flush Mount Deck Plates Stainless Steel By Iowa CustomsUpgrade your trailer deck finish with the Iowa Customs Stainless Steel, built for durability, corrosion...
    09-050300070
    SKU:
    09-050300070
    Location:
    Made In USA
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Iowa Customs Merritt Dynadeck Slide In Rail Deck Plate Accessories, 20 Inch Storage Box Only, Stainless Steel

    Iowa Customs Merritt Dynadeck Slide In Rail Deck Plate Accessories, 20 Inch Storage Box Only, Stainless Steel

    IOWA CUSTOMS

    $1,197.99
    20 Inch Stainless Steel Merritt Dynadeck Slide In Rail Deck Plate Accessories, Storage Box OnlyImprove your truck's storage efficiency with this premium Iowa Customs Slide In Rail Deck Storage Box,...
    09-0503000022
    SKU:
    09-0503000022
    Location:
    Made In USA
    Product Type:
    Frame & Chassis
    Length Options:
    14 Inch
    Width Options:
    20 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $1,197.99
    Qty in Cart: 0
    Price:
    $1,197.99
    Subtotal:
  • Bulldog Suspension Shock Front, Extended Length 26.85 Inch, Collapsed 16.61 Inch

    Bulldog Suspension Shock Front, Extended Length 26.85 Inch, Collapsed 16.61 Inch

    BULLDOG HD SHOCKS

    $42.33
    Front Suspension Shock Extended Length 26.85 Inch, Collapsed 16.61 InchRestore dependable steering response and ride quality with this high-quality Bulldog Front Suspension Shock designed for...
    09-05000005
    SKU:
    09-05000005
    Product Type:
    Frame & Chassis
    Style Options:
    Heavy Duty
    Length Options:
    27 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $42.33
    Qty in Cart: 0
    Price:
    $42.33
    Subtotal:
  • FREE SHIPPING OVER $249
    Vent Plug W/ 40 Micron Filter, Steel, 3/4 Inch NPT Thread

    Vent Plug W/ 40 Micron Filter, Steel, 3/4 Inch NPT Thread

    BUYERS PRODUCTS

    $16.53
    Hydraulic Tank Steel Vent Plug W/ 40 Micron Filter, Steel, 3/4 Inch NPT ThreadImprove hydraulic system protection and reliability with this high-quality Vent Plug, designed for heavy-duty hydraulic...
    09-02500274
    SKU:
    09-02500274
    Product Type:
    Cargo Control
    Height Options:
    3 Inch
    Material Options:
    Steel
    Diameter Options:
    3 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $16.53
    Qty in Cart: 0
    Price:
    $16.53
    Subtotal:
  • Iowa Customs On Top Dyna-Deck Airline Box 45 Degree Low Profile W/ Smooth Aluminum

    Iowa Customs On Top Dyna-Deck Airline Box 45 Degree Low Profile W/ Smooth Aluminum

    IOWA CUSTOMS

    $718.99
    Smooth Aluminum On Top Dyna-Deck Airline Box 45 Degree Low Profile By Iowa CustomsEnhance your deck system functionality with this high-quality Iowa Customs Airline Box featuring a 45 degree low...
    09-050400036
    SKU:
    09-050400036
    Style Options:
    Recessed
    Finish Options:
    Smooth
    Degree Options:
    45
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $718.99
    Qty in Cart: 0
    Price:
    $718.99
    Subtotal:
  • Spring Load Mud Flap Hanger, Straight 30 Inch Length, 2.5 Inch Bolt Center SS

    Spring Load Mud Flap Hanger, Straight 30 Inch Length, 2.5 Inch Bolt Center SS

    GRAND GENERAL

    $260.99
    Stainless Steel Mud Flap Hanger - Spring Load, Straight, 30 Inch Length, 2.5 Inch Bolt CenterEnhance rear-end protection and long-term durability with the Spring Load Mud Flap Hanger, designed for...
    09-0507407
    SKU:
    09-0507407
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Length Options:
    30 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $260.99
    Qty in Cart: 0
    Price:
    $260.99
    Subtotal:
  • Iowa Customs Merritt Dyna Deck In-Frame Deck Plate W/ Recessed Airline Box, 30 1/4 Wide Inch X 65 1/4 Inch Long

    Iowa Customs Merritt Dyna Deck In-Frame Deck Plate W/ Recessed Airline Box, 30 1/4 Wide Inch X 65 1/4 Inch Long

    IOWA CUSTOMS

    $1,202.99
    Merritt Dyna Deck In-Frame Deck Plate W/ Recessed Airline Box, 30 1/4 Wide Inch X 65 1/4 Inch Long By Iowa CustomsImprove underframe organization and functionality with the Iowa Customs In-Frame Deck...
    09-0503000016
    SKU:
    09-0503000016
    Product Type:
    Frame & Chassis
    Finish Options:
    Paintable
    Length Options:
    65 Inch
    Location:
    Made In USA
    Material Options:
    Aluminum
    Style Options:
    Recessed
    Width Options:
    30 Inch
    Make:
    Universal Items
    $1,202.99
    Qty in Cart: 0
    Price:
    $1,202.99
    Subtotal:
  • Iowa Customs Stainless Steel In-Frame Dove Tail Rail Covers

    Iowa Customs Stainless Steel In-Frame Dove Tail Rail Covers

    IOWA CUSTOMS

    $305.99
    Stainless Steel In-Frame Dove Tail Rail Covers By Iowa CustomsEnhance the look and durability of your rig with these premium Iowa Customs In-Frame Dove Tail Rail Covers, crafted from high-quality 304...
    09-0503000021
    SKU:
    09-0503000021
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    Style Options:
    Dove Tail
    Location:
    Made In USA
    Make:
    Universal Items
    $305.99
    Qty in Cart: 0
    Price:
    $305.99
    Subtotal:
  • Clear Rectangle Cab Dome Light - Plastic Lens For Peterbilt 2006 & Newer

    Clear Rectangle Cab Dome Light - Plastic Lens For Peterbilt 2006 & Newer

    GRAND GENERAL

    $4.73
    Plastic Lens Clear Rectangle Cab Dome Fits Peterbilt 2006 & NewerUpgrade your interior lighting with this high-quality Clear Rectangle Cab Dome Light Lens designed for Peterbilt 2006 and newer models...
    01-155000013
    SKU:
    01-155000013
    Material Options:
    Plastic/Poly
    Color:
    Clear
    Light Options:
    Without Lights
    Shape Options:
    Rectangular
    Product Type:
    Interior
    Make:
    Peterbilt
    $4.73
    Qty in Cart: 0
    Price:
    $4.73
    Subtotal:
  • FREE SHIPPING OVER $249
    Stainless Steel Toggle Switch Plate Fuel Left/Right For Peterbilt 359, 375, 377, 378 & 379

    Stainless Steel Toggle Switch Plate Fuel Left/Right For Peterbilt 359, 375, 377, 378 & 379

    GRAND GENERAL

    $3.95
    Toggle Switch Plate Fuel Left/ Right Stainless Steel Fits Peterbilt 359, 375, 377, 378 & 379Improve your cab's control panel clarity and durability with this Toggle Switch Plate Fuel Left Right,...
    01-1501208
    SKU:
    01-1501208
    Product Type:
    Interior
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $3.95
    Qty in Cart: 0
    Price:
    $3.95
    Subtotal:
  • FREE SHIPPING OVER $249
    Wiper Arm Assembly 14 Inch For Peterbilt 378 & 379 Replaces R236002

    Wiper Arm Assembly 14 Inch For Peterbilt 378 & 379 Replaces R236002

    UNITED PACIFIC

    $107.99
    14 Inch Wiper Arm Assembly Replaces R236002 Fits Peterbilt 378 & 379Maintain clear visibility in all driving conditions with the Wiper Arm Assembly, built for strength, reliability, and long-lasting...
    01-091100058
    SKU:
    01-091100058
    Material Options:
    Steel
    Color:
    Black
    Product Type:
    Exterior
    Length Options:
    14 Inch
    Make:
    Peterbilt
    $107.99
    Qty in Cart: 0
    Price:
    $107.99
    Subtotal:
  • Chrome Instrument Panel Cover W/ Visor For Peterbilt 379

    Chrome Instrument Panel Cover W/ Visor For Peterbilt 379

    GRAND GENERAL

    $10.39
    Instrument Panel Cover W/ Visor - Chrome Fits Peterbilt 379Upgrade your cab interior with this high-quality Chrome Instrument Panel Cover with Visor designed specifically for the Peterbilt 379...
    01-150400092
    SKU:
    01-150400092
    Material Options:
    Plastic/Poly
    Style Options:
    With Visor
    Product Type:
    Interior
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $10.39
    Qty in Cart: 0
    Price:
    $10.39
    Subtotal:
  • FREE SHIPPING OVER $249
    Wiper Arm Assembly - 21 Inch For Peterbilt 589 Replaces GS4911

    Wiper Arm Assembly - 21 Inch For Peterbilt 589 Replaces GS4911

    UNITED PACIFIC

    $137.99
    21 Inch Wiper Arm Assembly Replaces GS4911Maintain clear visibility and dependable windshield performance with the Wiper Arm Assembly, designed for strength, precision, and all-weather reliability...
    01-091100055
    SKU:
    01-091100055
    Color:
    Black
    Product Type:
    Exterior
    Length Options:
    21 Inch
    Material Options:
    Steel
    Make:
    Peterbilt
    $137.99
    Qty in Cart: 0
    Price:
    $137.99
    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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