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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
  • Quantity
  • Price
  • Subtotal
  • 32 Inch Nylon 11 Blade Fan Blade Replaces 3809753C1, 3809753C2, 47354461001, 85138, 010023828 For Cummins ISX, Caterpillar C13 Engines

    32 Inch Nylon 11 Blade Fan Blade Replaces 3809753C1, 3809753C2, 47354461001, 85138, 010023828 For Cummins ISX, Caterpillar C13 Engines

    AUTOMANN USA

    $312.99
    32 Inch Fan Blade- 11 BladesProtect your engine from overheating with this durable 32 Inch Nylon 11 Blade Fan Blade, replacement for Cummins ISX and Caterpillar C13 trucks. Featuring 11 nylon blades,...
    29-07060178
    SKU:
    29-07060178
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Material Options:
    Nylon
    Make:
    Universal Items
    $312.99
    Qty in Cart: 0
    Price:
    $312.99
    Subtotal:
  • Thermostat Replaces 2882757, 2952204, 3335550, 4318197, 4318947, 4973373, 34148 For Cummins

    Thermostat Replaces 2882757, 2952204, 3335550, 4318197, 4318947, 4973373, 34148 For Cummins

    AUTOMANN USA

    $47.09
    1.77 X 2.26 Inch ThermostatMaintain optimal engine operation with this high-performance 180 F Thermostat Cummins engines. Featuring precision coil and body dimensions, it delivers consistent cooling...
    29-071000031
    SKU:
    29-071000031
    Diameter Options:
    2 1/4 Inch
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Height Options:
    1 3/4 Inch
    Make:
    Universal Items
    $47.09
    Qty in Cart: 0
    Price:
    $47.09
    Subtotal:
  • Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    Transmission Pressure Switch Replaces 29512944, 29542944, 29552364 For Allison Transmissions

    AFTERMARKET

    $46.02
    2.98 X 4.70 Inch 2 Pin Transmission Pressure Switch W/ Inch CableMaximize the life of your transmission with this heavy-duty Transmission Pressure Switch, designed for Allison transmissions. With a...
    29-07100027
    SKU:
    29-07100027
    Product Type:
    Engine Parts
    Length Options:
    4 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    $46.02
    Qty in Cart: 0
    Price:
    $46.02
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    32 Inch Nylon 9 Blade Fan Blade Replaces 981813202, 991813202

    AFTERMARKET

    $224.99
    32 Inch Fan Blade- 9 BladesMaintain peak truck engine performance with this premium 32 Inch Nylon 9 Blade Fan Blade. Its 9 nylon blades, clockwise rotation, and 12 bolt holes provide efficient...
    29-07060184
    SKU:
    29-07060184
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $224.99
    Qty in Cart: 0
    Price:
    $224.99
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar 3406E

    Turbo Charger Mounting Kit For Caterpillar 3406E

    POWER PLAY PRODUCTS

    $91.99
    Caterpillar 3406E Turbo Charger Mounting KitKeep your Caterpillar 3406E engine running efficiently with this high-performance Turbo Charger Mounting Kit. The kit includes all required gaskets and...
    29-070400083
    SKU:
    29-070400083
    Style Options:
    Caterpillar
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • 15.5 Inch x 2 Inch Easy Effort Clutch Assembly Replaces 208925-82, 20892582, 108925-82, 10893582 For Volvo Gen II, Peterbilt 379

    15.5 Inch x 2 Inch Easy Effort Clutch Assembly Replaces 208925-82, 20892582, 108925-82, 10893582 For Volvo Gen II, Peterbilt 379

    AFTERMARKET

    $1,507.99
    Dual Plate Clutch Assembly- 3600 Lb Plate Load, 1700 Lb- Ft TorqueProtect your drivetrain and reduce pedal effort with this premium 15.5 Inch x 2 Inch Easy Effort Clutch Assembly. Built for Volvo Gen...
    29-07050012
    SKU:
    29-07050012
    Product Type:
    Engine Parts
    Length Options:
    15 1/2 Inch
    Width Options:
    2 Inch
    Make:
    Peterbilt
    Make:
    Volvo
    $1,507.99
    Qty in Cart: 0
    Price:
    $1,507.99
    Subtotal:
  • 32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    32 Inch Nylon 9 Blade Fan Blade Replaces 393256-32, 3415031, 3507212C1, 3571552C1, 981813253, 991813253

    AUTOMANN USA

    $197.99
    32 Inch Fan Blade- 9 BladesKeep your truck engine cool under the toughest conditions with this high-quality 32 Inch Nylon 9 Blade Fan Blade. Featuring 9 blades made of durable nylon, clockwise...
    29-0706015
    SKU:
    29-0706015
    Material Options:
    Nylon
    Diameter Options:
    32 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    Thermostat Replaces 2477133, 7C3095, 34289 For Caterpillar

    AUTOMANN USA

    $37.10
    1.811 X 2.26 Inch ThermostatPrevent engine overheating with this heavy-duty Caterpillar thermostat. Rated at 192F, it maintains proper engine temperature for maximum performance and reliability. With...
    29-07020004
    SKU:
    29-07020004
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $37.10
    Qty in Cart: 0
    Price:
    $37.10
    Subtotal:
  • Turbo Charger Mounting Kit For Caterpillar C15

    Turbo Charger Mounting Kit For Caterpillar C15

    POWER PLAY PRODUCTS

    $127.99
    Caterpillar C15 Turbo Charger Mounting KitEnsure secure turbo mounting and prevent leaks with this durable Turbo Charger Mounting Kit for Caterpillar C15 engines. Complete with mounting hardware and...
    29-070400084
    SKU:
    29-070400084
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $127.99
    Qty in Cart: 0
    Price:
    $127.99
    Subtotal:
  • 14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    14.00 Inch X 1.5 Inch Push Type Clutch Assembly Replaces LP1047104, LP1505134

    AFTERMARKET

    $954.99
    Single Plate Clutch Assembly- 500 Lb- Ft TorqueOptimize your truck's drivetrain efficiency with this high-performance 14.00 Inch x 1.5 Inch Push Type Clutch Assembly. Its single plate, 8-spring...
    29-07050013
    SKU:
    29-07050013
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Length Options:
    14 1/2 Inch
    Width Options:
    1 1/2 Inch
    Make:
    Universal Items
    $954.99
    Qty in Cart: 0
    Price:
    $954.99
    Subtotal:
  • 13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    13.78 Inch x 1.5 Inch Push Type Clutch Assembly Replaces 107621-1, 1076211

    AFTERMARKET

    $747.99
    Single Plate Clutch Assembly- 2400 Lb Plate Load, 500 Lb- Ft TorqueEnsure smooth power transfer and drivetrain reliability with this premium 13.78 Inch x 1.5 Inch Push Type Clutch Assembly...
    29-07050010
    SKU:
    29-07050010
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Make:
    Universal Items
    $747.99
    Qty in Cart: 0
    Price:
    $747.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    Turbocharger Exhaust Pipe Gasket For Cummins ISX 12, ISX 15, X12 & X15 Engines

    DAYTON / DORMAN

    $11.53
    3.75 Inch ID X 5.00 Inch OD Exhaust Pipe GasketPrevent exhaust leaks and maintain turbo efficiency with this high-quality Turbocharger Exhaust Pipe Gasket, compatible with Cummins ISX 12, ISX 15,...
    29-070400085
    SKU:
    29-070400085
    Product Type:
    Engine Parts
    Diameter Options:
    5 Inch
    Style Options:
    Cummins
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.53
    Qty in Cart: 0
    Price:
    $11.53
    Subtotal:
  • Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    Fuel Cover Locking Collar Replaces 23514061, 1694754C1, 380042, 3948920 For Cummins & Davco Fuel Pro 382 Fuel-Water Separators

    AUTOMANN USA

    $21.62
    5 Inch ID X 6.210 Inch OD Fuel Cover Locking CollarMaintain a secure, leak-free fuel system with this premium Fuel Cover Locking Collar. Perfect for Cummins and Davco Fuel Pro 382 Fuel-Water...
    29-0703001
    SKU:
    29-0703001
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $21.62
    Qty in Cart: 0
    Price:
    $21.62
    Subtotal:
  • AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AC Discharge Hose Assembly Replaces F50-6242-1275, F5062421275 For PACCAR

    AFTERMARKET

    $398.99
    2- Pin AC Discharge Hose AssemblyDependable HVAC operation begins with this precision AC discharge hose assembly. Designed to replace F50-6242-1275 and F5062421275, it connects your compressor to the...
    29-07000015
    SKU:
    29-07000015
    Style Options:
    Paccar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $398.99
    Qty in Cart: 0
    Price:
    $398.99
    Subtotal:
  • Expansion Valve Replaces 4475001482, 31-31218

    Expansion Valve Replaces 4475001482, 31-31218

    AFTERMARKET

    $60.99
    2.895 X 1.00 X 1.390 Inch Block Type Expansion ValveEnsure efficient airflow and temperature regulation with this heavy-duty expansion valve. Designed to replace 4475001482 and 31-31218, this 1 Ton...
    29-07000010
    SKU:
    29-07000010
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    Expansion Valve Replaces 101107, 140030103, 1601, 31-30956, 329499, 12-2013A

    AFTERMARKET

    $50.99
    8.895 X 1.000 X 1.875 Inch Block Type Expansion ValveKeep your truck's air conditioning system running at peak efficiency with this high-quality expansion valve. Designed to replace 101107,...
    29-07000012
    SKU:
    29-07000012
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Pivot Bushing Kit Replaces 65352502

    Pivot Bushing Kit Replaces 65352502

    AFTERMARKET

    $457.99
    Pivot Bushing KitEngineered for heavy-duty suspension systems, this pivot bushing kit provides complete service coverage. The kit includes pivot bushing, eccentric and concentric collars, wear pads,...
    29-05250029
    SKU:
    29-05250029
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $457.99
    Qty in Cart: 0
    Price:
    $457.99
    Subtotal:
  • Knuckle Spacer Replaces 005208, R-005208

    Knuckle Spacer Replaces 005208, R-005208

    AFTERMARKET

    $104.99
    2.937 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleReduce alignment issues and extend component life with a knuckle spacer built for accuracy. This high-quality replacement spacer is...
    29-05200030
    SKU:
    29-05200030
    Product Type:
    Trailer
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    AFTERMARKET

    $317.99
    10.120 Inch Piston Style Type 18/24 Disc Brake W/ 2.5 Inch Stroke LengthAchieve reliable and precise braking with this Piston Style Type 18/24 Disc Brake. Features a 2.5-inch stroke length, two top...
    29-05170029
    SKU:
    29-05170029
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    AFTERMARKET

    $104.99
    2.562 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleUpgrade your suspension service with a knuckle spacer built for heavy-duty reliability. Replacement for 005881 and R-005881, this...
    29-05250040
    SKU:
    29-05250040
    Product Type:
    Exterior
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    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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