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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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  • Price
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  • Engine Crankcase Breather Element For Cummins ISX 11.9 Engine Replaces 2869874, 2895324, CV50626

    Engine Crankcase Breather Element For Cummins ISX 11.9 Engine Replaces 2869874, 2895324, CV50626

    DAYTON / DORMAN

    $82.99
    Crankcase Ventilation Filter Replaces 2869874, 2895324, CV50626 Fits Cummins ISX 11.9 EngineRestore proper crankcase ventilation performance with this Engine Crankcase Breather Element designed for...
    29-071200053
    SKU:
    29-071200053
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • EGR Cooler For Cummins ISX 11.9, 15.0L Engine Replaces 2881760, 2881842, 2882108, 2892893

    EGR Cooler For Cummins ISX 11.9, 15.0L Engine Replaces 2881760, 2881842, 2882108, 2892893

    DAYTON / DORMAN

    $1,942.99
    Exhaust Gas Recirculation Cooler Replaces 2881760, 2881842, 2882108, 2892893 Fits Cummins ISX 11.9, 15.0L EngineRestore proper emissions control and engine efficiency with this EGR Cooler designed...
    29-071100015
    SKU:
    29-071100015
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $1,942.99
    Qty in Cart: 0
    Price:
    $1,942.99
    Subtotal:
  • EGR Cooler For Cummins ISB 6.7L Engine Replaces 2881692, 5254314, 5317072

    EGR Cooler For Cummins ISB 6.7L Engine Replaces 2881692, 5254314, 5317072

    DAYTON / DORMAN

    $668.99
    Exhaust Gas Recirculation Cooler Replaces 2881692, 5254314, 5317072 Fits Cummins ISB 6.7L EngineRestore efficient emissions system cooling with this EGR Cooler designed for Cummins ISB 6.7L engines...
    29-071100016
    SKU:
    29-071100016
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $668.99
    Qty in Cart: 0
    Price:
    $668.99
    Subtotal:
  • Nitrogen Oxide Exhaust Sensor W/ Harness For Cummins ISX 15L Engine Replaces 2894941, 2894941RX, 3687334RX

    Nitrogen Oxide Exhaust Sensor W/ Harness For Cummins ISX 15L Engine Replaces 2894941, 2894941RX, 3687334RX

    DAYTON / DORMAN

    $392.99
    Nitrogen Oxide Exhaust Sensor Replaces 2894941, 2894941RX, 3687334RX Fits Cummins ISX 15L EngineRestore optimal diesel aftertreatment performance with this Nitrogen Oxide Exhaust Sensor with...
    29-071000033
    SKU:
    29-071000033
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $392.99
    Qty in Cart: 0
    Price:
    $392.99
    Subtotal:
  • Turbocharger Exhaust Outlet Elbow Gasket For Cummins SB 6.7L & ISL 8.9L Engines Replaces 3846392C1

    Turbocharger Exhaust Outlet Elbow Gasket For Cummins SB 6.7L & ISL 8.9L Engines Replaces 3846392C1

    DAYTON / DORMAN

    $13.77
    Turbo Outlet Elbow Gasket Replaces 3846392C1 Fits Cummins SB 6.7L & ISL 8.9L EnginesRestore reliable exhaust sealing with this Turbocharger Exhaust Outlet Elbow Gasket for Cummins SB 6.7L and ISL 8...
    29-070400131
    SKU:
    29-070400131
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Shape Options:
    Round
    Make:
    Universal Items
    $13.77
    Qty in Cart: 0
    Price:
    $13.77
    Subtotal:
  • FASS Drop-In Series Fuel System For Caterpillar 3406E, C10, C11, C12, C13, C15, C16 & C18

    FASS Drop-In Series Fuel System For Caterpillar 3406E, C10, C11, C12, C13, C15, C16 & C18

    FASS

    $270.99
    Drop-In Series Fuel SystemImprove fuel quality and extend engine life with the FASS Drop-In Series Fuel System, designed for Caterpillar 3406E, C10, C11, C12, C13, C15, C16, and C18 engines equipped...
    29-070300015
    SKU:
    29-070300015
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $270.99
    Qty in Cart: 0
    Price:
    $270.99
    Subtotal:
  • 12.25 X 7.5 Inch Brake Shoe Kit

    12.25 X 7.5 Inch Brake Shoe Kit

    DAYTON / DORMAN

    $189.99
    Replacement Brake Shoe Kit- 12.25 X 7.5 InchUpgrade your braking system with this high-quality 12.25 x 7.5 Inch Brake Shoe Kit, ideal for heavy-duty truck maintenance and repair. Built with ceramic...
    29-051700057
    SKU:
    29-051700057
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $189.99
    Qty in Cart: 0
    Price:
    $189.99
    Subtotal:
  • DEF Urea Filter Kit For Cummins ISL, ISB, ISC & PACCAR PX-6, PX-7, PX-9 Engine Replaces 1927474PE, 2014774PE, 21496419

    DEF Urea Filter Kit For Cummins ISL, ISB, ISC & PACCAR PX-6, PX-7, PX-9 Engine Replaces 1927474PE, 2014774PE, 21496419

    DAYTON / DORMAN

    $55.99
    Diesel Exhaust Fluid Urea Filter Kit Replaces 1927474PE, 2014774PE, 21496419 Fits Cummins & PACCAR EngineImprove emissions system reliability with this DEF Urea Filter Kit for Cummins and PACCAR...
    29-06070017
    SKU:
    29-06070017
    Style Options:
    Paccar
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $55.99
    Qty in Cart: 0
    Price:
    $55.99
    Subtotal:
  • 54 Inch Suspension Equalizer Beam Replaces 058494-002, 058494-004, 58494-2

    54 Inch Suspension Equalizer Beam Replaces 058494-002, 058494-004, 58494-2

    DAYTON / DORMAN

    $3,095.99
    Suspension Equalizer Beam- 54 InchImprove suspension strength and ride stability with this 54 Inch Suspension Equalizer Beam designed to replace 058494-002, 058494-004, and 58494-2. Built for...
    29-051000051
    SKU:
    29-051000051
    Length Options:
    54 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $3,095.99
    Qty in Cart: 0
    Price:
    $3,095.99
    Subtotal:
  • Shock Absorber Replaces 12111, 980151Z

    Shock Absorber Replaces 12111, 980151Z

    DAYTON / DORMAN

    $127.99
    Shock Absorber W/ 8.53 Inch StrokeImprove suspension performance and ride stability with this Shock Absorber designed to replace 12111 and 980151Z in heavy-duty applications. Built from high-strength...
    29-050000201
    SKU:
    29-050000201
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $127.99
    Qty in Cart: 0
    Price:
    $127.99
    Subtotal:
  • Equalizer Beam Center Bushing Kit Replaces 030437-000L, 033742-000, 034013-054L

    Equalizer Beam Center Bushing Kit Replaces 030437-000L, 033742-000, 034013-054L

    DAYTON / DORMAN

    $499.99
    Equalizer Beam Center Bushing Kit W/ 3.5 Inch ID and 4.75 Inch ODRestore smooth and reliable suspension operation with this Equalizer Beam Center Bushing Kit compatible with walking beam suspension...
    29-051000052
    SKU:
    29-051000052
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $499.99
    Qty in Cart: 0
    Price:
    $499.99
    Subtotal:
  • 16.5 X 5 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    16.5 X 5 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    DAYTON / DORMAN

    $235.99
    16.5 X 5 Inch 10 Hole Brake Drum Replaces 0202139, 1653545C1Enhance braking performance and reliability with this 16.5 x 5 Inch Brake Drum featuring 10 mounting holes and an 8.78-inch hub, designed...
    19-05170090
    SKU:
    19-05170090
    Product Type:
    Trailer
    Material Options:
    Steel
    Make:
    Universal Items
    $235.99
    Qty in Cart: 0
    Price:
    $235.99
    Subtotal:
  • Equalizer Beam End Bushing Replaces 034013-087L, 050150-000, 1139014, CS70572

    Equalizer Beam End Bushing Replaces 034013-087L, 050150-000, 1139014, CS70572

    DAYTON / DORMAN

    $181.99
    Steel Encased Rubber Equalizer Beam End BushingImprove ride stability and suspension reliability with this Equalizer Beam End Bushing replacement for 034013-087L, 050150-000, 1139014, and CS70572,...
    19-05100029
    SKU:
    19-05100029
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $181.99
    Qty in Cart: 0
    Price:
    $181.99
    Subtotal:
  • 3-1/16 Inch Inner Cap Wheel Nut- Left Hand For Stud Pilot Wheels Replaces W767

    3-1/16 Inch Inner Cap Wheel Nut- Left Hand For Stud Pilot Wheels Replaces W767

    DAYTON / DORMAN

    $32.63
    3-1/16 Inch Inner Cap Wheel Nut W/ 13/16 Inch Hex Replaces W767 Fits Stud Pilot WheelsKeep your wheels properly secured with this 3-1/16 Inch Inner Cap Wheel Nut with left-hand (counterclockwise)...
    09-20200596
    SKU:
    09-20200596
    Product Type:
    Wheels
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $32.63
    Qty in Cart: 0
    Price:
    $32.63
    Subtotal:
  • Ignition Switch Replaces 033001001 For Workhorse Step Van

    Ignition Switch Replaces 033001001 For Workhorse Step Van

    DAYTON / DORMAN

    $57.99
    Ignition Switch Fits Workhorse Step VanEnsure reliable vehicle startup with this high-quality ignition switch designed to replace part number 033001001 for Workhorse step vans. Built for durability...
    09-162000014
    SKU:
    09-162000014
    Product Type:
    Interior
    Make:
    Universal Items
    $57.99
    Qty in Cart: 0
    Price:
    $57.99
    Subtotal:
  • 6.7 X 55 Inch Flashing Warning Beacon LED Light- Amber LED/ Amber Lens

    6.7 X 55 Inch Flashing Warning Beacon LED Light- Amber LED/ Amber Lens

    MAXXIMA

    $95.99
    48 Diode Amber Flashing Warning Beacon LED Light W/ Amber LensBuilt for durability and performance, this LED beacon features a rugged polycarbonate dome lens and base designed to withstand harsh...
    09-160900229
    SKU:
    09-160900229
    Height Options:
    5 1/2 Inch
    Material Options:
    Plastic/Poly
    Color:
    Amber
    Product Type:
    Lighting
    Diameter Options:
    6 1/2 Inch
    Make:
    Universal Items
    $95.99
    Qty in Cart: 0
    Price:
    $95.99
    Subtotal:
  • FREE SHIPPING OVER $249
    6 Diode Thin Low Profile Flashing Warning LED Light- Amber- White LED/ Clear Lens

    6 Diode Thin Low Profile Flashing Warning LED Light- Amber- White LED/ Clear Lens

    MAXXIMA

    $95.99
    6 Diode Amber- White Thin Low Profile Flashing Warning LED Light W/ Clear LensBuilt with a durable polycarbonate lens and a sleek black snap-on bezel, this low-profile LED light offers both strength...
    09-160905108
    SKU:
    09-160905108
    Length Options:
    5 3/4 Inch
    Material Options:
    Plastic/Poly
    Type Options:
    Surface Mount
    Width Options:
    1 1/2 Inch
    Product Type:
    Lighting
    Color:
    Amber/White
    Style Options:
    With Bezel
    Make:
    Universal Items
    $95.99
    Qty in Cart: 0
    Price:
    $95.99
    Subtotal:
  • 33 MM Flanged Wheel Nut For Hub Pilot Wheels Replaces W498, W538, 511033

    33 MM Flanged Wheel Nut For Hub Pilot Wheels Replaces W498, W538, 511033

    DAYTON / DORMAN

    $2.03
    33 MM Steel Flanged Wheel Nut Replaces W498, W538, 511033 Fits Hub Pilot WheelsImprove wheel security and performance with this high-quality 33 mm flanged wheel nut engineered for hub pilot wheels...
    09-20200593
    SKU:
    09-20200593
    Product Type:
    Wheels
    Make:
    Universal Items
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • FREE SHIPPING OVER $249
    24 Inch LED Work Light Bar- White LED/ Clear Lens- 3500 Lumens

    24 Inch LED Work Light Bar- White LED/ Clear Lens- 3500 Lumens

    MAXXIMA

    $148.99
    24 Inch White LED Work Light Bar W/ Clear Lens- 3500 LumensBoost visibility and safety on the job with this 24 Inch LED Work Light Bar, designed with bright white LEDs and a clear lens for powerful...
    09-160900227
    SKU:
    09-160900227
    Color:
    White/Clear
    Lumens:
    2001 to 4999 Lumens
    Material Options:
    Plastic/Poly
    Width Options:
    26 Inch
    Height Options:
    1 3/4 Inch
    Product Type:
    Lighting
    Length Options:
    1 5/8 Inch
    Style Options:
    Aluminum Housing
    Make:
    Universal Items
    $148.99
    Qty in Cart: 0
    Price:
    $148.99
    Subtotal:
  • 60 Inch Low Profile Elite LED Light Bar W/ 30 Programmable Flashing Patterns & 10 Traffic Director Patterns

    60 Inch Low Profile Elite LED Light Bar W/ 30 Programmable Flashing Patterns & 10 Traffic Director Patterns

    MAXXIMA

    $1,581.99
    60 Inch 270 Diode Low Profile Elite LED Light BarEquip your vehicle with the 60 Inch Low Profile Elite LED Light Bar, designed with 30 programmable flash patterns and 10 traffic director modes. Built...
    09-160900088
    SKU:
    09-160900088
    Color:
    Amber
    Product Type:
    Lighting
    Width Options:
    59 Inch
    Height Options:
    1 5/8 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    $1,581.99
    Qty in Cart: 0
    Price:
    $1,581.99
    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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