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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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  • Universal Slack Adjuster Tool

    Universal Slack Adjuster Tool

    AUTOMANN USA

    $37.10
    Slack Adjuster Tool UniversalThis handy all-in-one slack adjuster wrench works on most trucks you will come across. I has four different sizes built right in - 5/16" square, 7/16" hex, 9/16" hex, and...
    09-21000099
    SKU:
    09-21000099
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $37.10
    Qty in Cart: 0
    Price:
    $37.10
    Subtotal:
  • 10,000 PSI Foot Operated Air/Hydraulic Pump

    10,000 PSI Foot Operated Air/Hydraulic Pump

    AFTERMARKET

    $1,560.99
    Air Hydraulic Pump 10000 PSI At 100 PSI* High Quality Pump* Ideal All-Around Power Source Develops 10000 PSI At 100 PSI Air* 3/8 Inch NPTF Oil Port* 98 Cu. Inches Of Usable Oil* Two-Stage Release...
    09-21000115
    SKU:
    09-21000115
    Make:
    Universal Items
    Product Type:
    Tools
    $1,560.99
    Qty in Cart: 0
    Price:
    $1,560.99
    Subtotal:
  • Angled Retaining Ring Pliers

    Angled Retaining Ring Pliers

    AUTOMANN USA

    $11.43
    Retaining Ring Pliers Use With 209.4XXX Series Unitized Spindle Nuts w/Retaining RingsThese specialized pliers are designed to remove and install retaining rings on 209.4XXX series unitized spindle...
    09-21000094
    SKU:
    09-21000094
    Product Type:
    Tools
    Make:
    Universal Items
    $11.43
    Qty in Cart: 0
    Price:
    $11.43
    Subtotal:
  • 6 Inch Low Profile Fuel Filter Wrench For Davco Models 382 & 84

    6 Inch Low Profile Fuel Filter Wrench For Davco Models 382 & 84

    AUTOMANN USA

    $29.22
    Low Profile Wrench For 6 Inch OD Fuel Filters* High Quality Wrench* 6 Inch* Low Profile Design For Better Clearance* Sold Individually* Warranty On Wrenches Against Defects In Workmanship & Material...
    09-21000116
    SKU:
    09-21000116
    Product Type:
    Tools
    Length Options:
    6 Inch
    Make:
    Universal Items
    $29.22
    Qty in Cart: 0
    Price:
    $29.22
    Subtotal:
  • 3/4 To 2-1/2 Inch Cylinder Range Brake Hone - Repairs Scratched Cylinder Walls

    3/4 To 2-1/2 Inch Cylinder Range Brake Hone - Repairs Scratched Cylinder Walls

    AUTOMANN USA

    $19.07
    Brake Cylinder Hone With Adjustable TensionFix your brakes like a pro with this easy-to-use Brake Cylinder Hone Tool. This tough tool smooths out wheel cylinders quickly, works on all standard sizes...
    09-21000106
    SKU:
    09-21000106
    Product Type:
    Tools
    Length Options:
    1 1/16 Inch
    Make:
    Universal Items
    $19.07
    Qty in Cart: 0
    Price:
    $19.07
    Subtotal:
  • Zippered Document Portfolio

    Zippered Document Portfolio

    AUTOMANN USA

    $26.64
    Document Organizer Portfolio With ZipperKeep your important papers safe and organized in this multi-pocket portfolio.* High Quality Document Portfolio* With Zipper* Has Several Pockets To Carry...
    09-21070001
    SKU:
    09-21070001
    Product Type:
    Tools
    Make:
    Universal Items
    $26.64
    Qty in Cart: 0
    Price:
    $26.64
    Subtotal:
  • 1-3/4 to 4 Inch Filter Pliers

    1-3/4 to 4 Inch Filter Pliers

    AUTOMANN USA

    $18.42
    Small Oil Filter Pliers* High Quality Filter Pliers* 1-3/4 Inch To 4 Inch* Sold Individually* Warranty On Filter Pilers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    09-21000090
    SKU:
    09-21000090
    Product Type:
    Tools
    Make:
    Universal Items
    $18.42
    Qty in Cart: 0
    Price:
    $18.42
    Subtotal:
  • 10 Ft Poly Yellow Spill Blocker Dike

    10 Ft Poly Yellow Spill Blocker Dike

    AFTERMARKET

    $1,364.99
    Industrial Spill Containment | Heavy-Duty Spill Blocker DikeProtect your workspace with the tough Spill Blocker Dike! This flexible, temporary barrier sticks to your floor to stop spills, leaks, and...
    09-21000107
    SKU:
    09-21000107
    Product Type:
    Tools
    Material Options:
    Plastic/Poly
    Color:
    Yellow
    Make:
    Universal Items
    $1,364.99
    Qty in Cart: 0
    Price:
    $1,364.99
    Subtotal:
  • 3/8-Inch Drive Shallow Impact Socket Set - 13 Piece

    3/8-Inch Drive Shallow Impact Socket Set - 13 Piece

    AFTERMARKET

    $54.99
    Impact Socket Set- 3/8 Inch Drive With 5/16 Inch - 1 Inch Sockets* High Quality Impact Socket Set* 3/8 Inch Drive* 12 Sockets 5/16 Inch - 1 Inch* Made In USA* Sold As Set* Warranty On Impact Socket...
    09-21000102
    SKU:
    09-21000102
    Product Type:
    Tools
    Make:
    Universal Items
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • Doctor Preload Bearing FF Steer Tool Replaces MER415002

    Doctor Preload Bearing FF Steer Tool Replaces MER415002

    AFTERMARKET

    $1,757.99
    Eliminate Wheel Bearing Endplay - Fast, Safe & ConsistentDoctor Preload bearing adjustment tools help set wheel-end bearings to SAE light preload settings. They measure preload forces throughout the...
    09-21000110
    SKU:
    09-21000110
    Product Type:
    Tools
    Make:
    Universal Items
    $1,757.99
    Qty in Cart: 0
    Price:
    $1,757.99
    Subtotal:
  • Tire Awl - Pointed

    Tire Awl - Pointed

    AUTOMANN USA

    $6.37
    Sharp Pointed Tool For Repairing Holes in Tires* High Quality Pointed Tire Awl* Holes Can Be Punctured In A Variety Of Materials * Existing Holes Can Be Enlarged* 8 Inch Length* Sold Individually*...
    09-21000085
    SKU:
    09-21000085
    Product Type:
    Tools
    Length Options:
    8 Inch
    Make:
    Universal Items
    $6.37
    Qty in Cart: 0
    Price:
    $6.37
    Subtotal:
  • 18 Inch Ratchet Strap Leverage Bar

    18 Inch Ratchet Strap Leverage Bar

    AUTOMANN USA

    $28.45
    Ratchet Strap Leverage Bar* High Quality Leverage Bar* Steel* 18 Inch Length* Provides Additional Leverage To Tighten Ratchet Straps* With Rubber Handle* Sold Individually* Warranty On Leverage Bars...
    09-21000103
    SKU:
    09-21000103
    Product Type:
    Tools
    Length Options:
    18 Inch
    Make:
    Universal Items
    $28.45
    Qty in Cart: 0
    Price:
    $28.45
    Subtotal:
  • 5/16-Inch Slack Adjuster Wrench and Release Tool - Meritor Type

    5/16-Inch Slack Adjuster Wrench and Release Tool - Meritor Type

    AFTERMARKET

    $54.99
    Automatic Slack Adjuster ToolThis specialized Meritor brake service tool features a 5/16-inch double square wrench with an angled head that provides extra hand clearance. The side-mounted...
    09-21000096
    SKU:
    09-21000096
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • Large ID Hose Cutter

    Large ID Hose Cutter

    AUTOMANN USA

    $26.06
    Straight Blade Cutter For Large HosesCut rubber hoses and soft tubing up to 3 inches in diameter with this Large ID Hose Cutter.* High Quality Hose Cutter* Large ID* For Rubber Hose Or Soft Tubing Up...
    09-21000105
    SKU:
    09-21000105
    Product Type:
    Tools
    Make:
    Universal Items
    $26.06
    Qty in Cart: 0
    Price:
    $26.06
    Subtotal:
  • Heavy Duty Metal Grip Split Eye Needle 6.5 Inch

    Heavy Duty Metal Grip Split Eye Needle 6.5 Inch

    AUTOMANN USA

    $16.53
    Professional Quality Tire Repair ToolRepair flat tires easily with this T-Handle Split Eye Needle. Its comfortable grip helps mechanics push repair plugs into tire holes quickly and securely.* High...
    09-21000081
    SKU:
    09-21000081
    Product Type:
    Tools
    Length Options:
    6 1/2 Inch
    Make:
    Universal Items
    $16.53
    Qty in Cart: 0
    Price:
    $16.53
    Subtotal:
  • 7/16 Inch Slack Adjuster Check Tool

    7/16 Inch Slack Adjuster Check Tool

    AFTERMARKET

    $65.99
    Cam Brake Slack Adjuster ToolThis tool enables you to quickly check the brake adjustment on class 7 and 8 trucks and trailers having S-cam brakes. It features a sturdy, four-position handle to...
    09-21000098
    SKU:
    09-21000098
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • 3 5/8 to 6 Inch Filter Pliers

    3 5/8 to 6 Inch Filter Pliers

    AUTOMANN USA

    $27.21
    3-5/8 to 6 Inch Truck and Tractor Oil Filter Pliers* High Quality Filter Pliers* 3 5/8 Inch To 6 Inch* Sold Individually* Warranty On Filter Pilers Against Defects In Workmanship & Material From Date...
    09-21000092
    SKU:
    09-21000092
    Product Type:
    Tools
    Make:
    Universal Items
    $27.21
    Qty in Cart: 0
    Price:
    $27.21
    Subtotal:
  • Off-Highway Upgrade Cable Kit with Introductory Diagnostic Software License

    Off-Highway Upgrade Cable Kit with Introductory Diagnostic Software License

    AFTERMARKET

    $4,208.99
    Off-Highway Upgrade Cable Kit with Introductory Diagnostic Software License for Agricultural, Construction, and Industrial Vehicles* High Quality Off Highway Upgrade Kit* The Off-Highway Software Has...
    09-21000100
    SKU:
    09-21000100
    Product Type:
    Tools
    Make:
    Universal Items
    $4,208.99
    Qty in Cart: 0
    Price:
    $4,208.99
    Subtotal:
  • 9.5 Inch Pliers Wheel Weight

    9.5 Inch Pliers Wheel Weight

    AUTOMANN USA

    $38.34
    Heavy Duty Wheel Balancing Weight PliersRemove and install wheel weights easily with these 9.5-inch specialized pliers, designed specifically for tire service and wheel balancing work.* High Quality...
    09-21000076
    SKU:
    09-21000076
    Product Type:
    Tools
    Length Options:
    9 1/2 Inch
    Make:
    Universal Items
    $38.34
    Qty in Cart: 0
    Price:
    $38.34
    Subtotal:
  • Axle Stud Cone Pliers

    Axle Stud Cone Pliers

    AFTERMARKET

    $48.33
    Axle Cone Removal ToolSafely remove tapered cones from rear axle studs on trucks with these specialized pliers, preventing damage to stud threads.* High Quality Pliers* Made In USA* Sold...
    09-21000093
    SKU:
    09-21000093
    Product Type:
    Tools
    Make:
    Universal Items
    $48.33
    Qty in Cart: 0
    Price:
    $48.33
    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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