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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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  • Disc Brake Rotor Replaces 6402229292, 76901, AMR2242N For Hendrickson MAXX22T

    Disc Brake Rotor Replaces 6402229292, 76901, AMR2242N For Hendrickson MAXX22T

    DAYTON / DORMAN

    $383.99
    415MM Disc Brake Rotor Fits Hendrickson MAXX22TEnhance air disc brake performance with this premium disc brake rotor, engineered as a replacement for part numbers 6402229292, 76901, and AMR2242N on...
    09-051700047
    SKU:
    09-051700047
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $383.99
    Qty in Cart: 0
    Price:
    $383.99
    Subtotal:
  • 5.5 Inch Automatic Slack Adjuster W/ 1.5 Inch-28 Spline

    5.5 Inch Automatic Slack Adjuster W/ 1.5 Inch-28 Spline

    DAYTON / DORMAN

    $84.99
    Automatic Slack Adjuster Replaces R803108, R802447, R802446Maintain optimal braking efficiency with this durable 5.5-inch automatic slack adjuster designed for air brake systems requiring a 1...
    09-051700048
    SKU:
    09-051700048
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $84.99
    Qty in Cart: 0
    Price:
    $84.99
    Subtotal:
  • Air Brake Caliper- Passenger Side Replaces 802984, K113887X, K149714

    Air Brake Caliper- Passenger Side Replaces 802984, K113887X, K149714

    DAYTON / DORMAN

    $1,096.99
    Passenger Side Air Brake Caliper Replaces 802984, K113887X, K149714Ensure dependable stopping power with this high-quality air brake caliper designed for passenger-side applications and built as a...
    09-051700049
    SKU:
    09-051700049
    Product Type:
    Frame & Chassis
    Position:
    Passenger Side
    Make:
    Universal Items
    $1,096.99
    Qty in Cart: 0
    Price:
    $1,096.99
    Subtotal:
  • 15 X 4 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    15 X 4 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    DAYTON / DORMAN

    $228.99
    15 X 4 Inch 10 Hole Brake Drum Replaces 65548B, 3800XImprove stopping power and reliability with this high-quality iron brake drum designed for air brake systems in heavy-duty applications. Built for...
    09-051700046
    SKU:
    09-051700046
    Product Type:
    Trailer
    Material Options:
    Steel
    Make:
    Universal Items
    $228.99
    Qty in Cart: 0
    Price:
    $228.99
    Subtotal:
  • 16.5 X 8.62 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    16.5 X 8.62 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    DAYTON / DORMAN

    $270.99
    16.5 X 8.62 Inch 10 Hole Brake Drum Replaces 972312, WWD66854B, 10012097Improve stopping power and reliability with this high-quality iron brake drum designed for air brake systems in heavy-duty...
    09-051700043
    SKU:
    09-051700043
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $270.99
    Qty in Cart: 0
    Price:
    $270.99
    Subtotal:
  • 16.5 X 7 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    16.5 X 7 Inch Brake Drum W/ 10 Holes & 8.78 Inch Hub

    DAYTON / DORMAN

    $269.99
    16.5 X 7 Inch 10 Hole Brake Drum Replaces 1670176C1, 66800B, APL-102317Improve stopping power and reliability with this high-quality iron brake drum designed for air brake systems in heavy-duty...
    09-051700044
    SKU:
    09-051700044
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Make:
    Universal Items
    $269.99
    Qty in Cart: 0
    Price:
    $269.99
    Subtotal:
  • 16.5 X 7 Inch Brake Drum W/ 10 Holes & 8.53 Inch Hub

    16.5 X 7 Inch Brake Drum W/ 10 Holes & 8.53 Inch Hub

    DAYTON / DORMAN

    $253.99
    16.5 X 7 Inch 10 Hole Brake Drum Replaces 3946075Improve stopping power and reliability with this high-quality iron brake drum designed for air brake systems in heavy-duty applications. Built for...
    09-051700045
    SKU:
    09-051700045
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $253.99
    Qty in Cart: 0
    Price:
    $253.99
    Subtotal:
  • 1.75 X 3.98 Inch Multi- Purpose Leaf Spring Bushings Replaces 052700000, 52700, B131000

    1.75 X 3.98 Inch Multi- Purpose Leaf Spring Bushings Replaces 052700000, 52700, B131000

    DAYTON / DORMAN

    $28.05
    Multi- Purpose Leaf Spring Bushings- 1.75 X 3.98 InchImprove suspension performance with these heavy-duty multi-purpose leaf spring bushings, engineered to replace part numbers 052700000, 52700, and...
    09-051000014
    SKU:
    09-051000014
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $28.05
    Qty in Cart: 0
    Price:
    $28.05
    Subtotal:
  • Suspension Height Control Valve Replaces 060826000, 60826, 60826000

    Suspension Height Control Valve Replaces 060826000, 60826, 60826000

    DAYTON / DORMAN

    $84.99
    Suspension Height Control Valve W/ 1/4 Inch NPT Inlet/ OutletOptimize your air suspension system with this high-quality ride height control valve, a direct replacement for part numbers 060826000,...
    09-051000015
    SKU:
    09-051000015
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $84.99
    Qty in Cart: 0
    Price:
    $84.99
    Subtotal:
  • Steel Round Leaf Spring U- Bolt Kit

    Steel Round Leaf Spring U- Bolt Kit

    DAYTON / DORMAN

    $25.49
    3-1/16 X 14-1/2 Inch Round Leaf Spring U- Bolt KitSecure your suspension system with this high-quality steel round leaf spring U-bolt kit, designed for strength, durability, and reliable performance...
    09-051000017
    SKU:
    09-051000017
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    Shape Options:
    Round
    Make:
    Universal Items
    $25.49
    Qty in Cart: 0
    Price:
    $25.49
    Subtotal:
  • Stainless Steel Mud Flap Top Trims W/ Mounting Hardware 2 X 24 Inch

    Stainless Steel Mud Flap Top Trims W/ Mounting Hardware 2 X 24 Inch

    TURNPIKE TRUCK TRIM

    $61.99
    2 X 24 Inch Stainless Steel Universal Top Mud Flap Accent TrimThese stainless steel universal top Mud Flap accent trims securely mount the mud flap to the hangers with include hardware for easy...
    09-0507055
    SKU:
    09-0507055
    Height Options:
    2 Inch
    Material Options:
    Stainless Steel
    Width Options:
    24 Inch
    Product Type:
    Mud Flaps
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • Self Adjusting 82 dB to 102 dB Back Up Alarm

    Self Adjusting 82 dB to 102 dB Back Up Alarm

    MAXXIMA

    $34.75
    Back Up Alarm- Self Adjusting 82 dB to 102 dBEnhance safety and compliance with this Self Adjusting 82 dB to 102 dB Back Up Alarm. This high-quality backup alarm automatically adjusts its sound...
    09-0205005
    SKU:
    09-0205005
    Length Options:
    1 5/8 Inch
    Height Options:
    2 3/4 Inch
    Width Options:
    4 Inch
    Product Type:
    Air, Electrical, & Safety
    Type Options:
    Surface Mount
    Make:
    Universal Items
    $34.75
    Qty in Cart: 0
    Price:
    $34.75
    Subtotal:
  • 3/4 Inch X 1 3/8 Inch Chrome Bullet Nut Cover

    3/4 Inch X 1 3/8 Inch Chrome Bullet Nut Cover

    UNITED PACIFIC

    $0.91
    Bullet Nut Cover- 3/4 Inch X 1 3/8 InchUpgrade your wheel appearance with this Chrome Bullet Nut Cover measuring 3/4 Inch x 1-3/8 Inch, built for a sleek and customized finish. Made from high-quality...
    09-0506055
    SKU:
    09-0506055
    Finish Options:
    Chrome-Plated
    Style Options:
    Push On
    Diameter Options:
    3/4 Inch
    Product Type:
    Wheels
    Height Options:
    1 1/4 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    $0.91
    Qty in Cart: 0
    Price:
    $0.91
    Subtotal:
  • Ash Gray Door Panels W/ Passenger Side Lower Rectangular Window For Peterbilt 379, 389 & 389 Glider 2006 & Newer

    Ash Gray Door Panels W/ Passenger Side Lower Rectangular Window For Peterbilt 379, 389 & 389 Glider 2006 & Newer

    TRUCK-N AWESOME

    $804.99
    Door Panels With Rectangular Lower Window On Passenger Door Fits PeterbiltGive your Peterbilt 379 a fresh interior upgrade with these ash gray door panels with passenger side lower window. Finished...
    01-15230215
    SKU:
    01-15230215
    Shape Options:
    Rectangular
    Color:
    Gray
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Product Type:
    Interior
    Make:
    Peterbilt
    $804.99
    Qty in Cart: 0
    Price:
    $804.99
    Subtotal:
  • HVAC Blower Motor Switch For Peterbilt 379 & 384 Replaces Q216012, Q21-6012

    HVAC Blower Motor Switch For Peterbilt 379 & 384 Replaces Q216012, Q21-6012

    DAYTON / DORMAN

    $79.99
    HVAC Blower Motor Switch Replaces Q216012, Q21-6012 Fits Peterbilt 379 & 384Maintain comfortable cab conditions with this HVAC Blower Motor Switch, designed to replace Q216012 and Q21-6012 in...
    01-150300044
    SKU:
    01-150300044
    Product Type:
    Interior
    Make:
    Peterbilt
    $79.99
    Qty in Cart: 0
    Price:
    $79.99
    Subtotal:
  • FREE SHIPPING OVER $249
    RoadWorks Stainless Steel Air Valve & Ash Tray Surround Trim For Peterbilt

    RoadWorks Stainless Steel Air Valve & Ash Tray Surround Trim For Peterbilt

    ROADWORKS

    $49.34
    SS Air Valve & Ash Tray Surround Trim By Turnpike Truck Trim Fits Peterbilt* High Quality Dash Trim * Made Of Stainless Steel* For Air Valve And Ash Tray * Made In USA* Sold Individually* Warranty On...
    01-1504105
    SKU:
    01-1504105
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $49.34
    Qty in Cart: 0
    Price:
    $49.34
    Subtotal:
  • Aluminum Bullet Casing Toggle Switch- 2 Pack For Peterbilt

    Aluminum Bullet Casing Toggle Switch- 2 Pack For Peterbilt

    UNITED PACIFIC

    $11.53
    2 Pack of Aluminum Bullet Casing Toggle SwitchesAdd a bold custom touch to your cab with this Aluminum Bullet Casing Toggle Switch 2-Pack designed for Peterbilt trucks. Featuring a distinctive bullet...
    01-1501069
    SKU:
    01-1501069
    Material Options:
    Aluminum
    Product Type:
    Interior
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $11.53
    Qty in Cart: 0
    Price:
    $11.53
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch 7 Diode Round Marker Light W/ Clear Lens- Color Options

    2 Inch 7 Diode Round Marker Light W/ Clear Lens- Color Options

    TRUX ACCESSORIES

    $8.89
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks2 Inch 7 Diode Round Marker Light Amber LED / Clear LensLED Clear/Amber Marker Light 2 Inch Round W/ 7...
    PPR_300741
    SKU:
    PPR_300741
    Product Type:
    Lighting
    Color:
    Amber
    Color:
    Red/Clear
    Material Options:
    Plastic/Poly
    Height Options:
    1 Inch
    Width Options:
    1 Inch
    Truck Class:
    Universal
    Diameter Options:
    2 Inch
    Shape Options:
    Round
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $8.89
    Qty in Cart: 0
    Price:
    $8.89
    Subtotal:
  • VC 18 Inch Chrome Texas Boxed End Bumper W/ Tow Holes & Light Hole Options For Peterbilt 378 & 379

    VC 18 Inch Chrome Texas Boxed End Bumper W/ Tow Holes & Light Hole Options For Peterbilt 378 & 379

    VALLEY CHROME PLATING

    $898.99 - $951.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 378 1988 thru 2007* Fits Peterbilt 379 1987 thru 200718 Inch Chrome Texas Boxed End Bumper W/ Tow, 36 Rnd 3/4 Inch Light Holes On Face & 1...
    PPR_300707
    SKU:
    PPR_300707
    Location:
    Made In USA
    Light Options:
    Without Lights
    Style Options:
    Texas Boxed End
    Size Options:
    7 Gauge
    Height Options:
    18 Inch
    Material Options:
    Steel
    Product Type:
    Bumpers
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $898.99 - $951.99
    Qty in Cart: 0
    Price:
    $898.99 - $951.99
    Subtotal:
  • VC 20 Inch Chrome Blind Mount American Eagle Rolled End Bumper W/ Frenched In License Plate Holes & Light Hole Options For Freightliner, Kenworth & Peterbilt

    VC 20 Inch Chrome Blind Mount American Eagle Rolled End Bumper W/ Frenched In License Plate Holes & Light Hole Options For Freightliner, Kenworth & Peterbilt

    VALLEY CHROME PLATING

    $1,982.99 - $2,189.99
    Choose Option(s) to see description.Fitment* Fits Freightliner Classic 120 1990 thru 1999* Fits Freightliner Classic XL 132 1990 thru 1999* Fits Freightliner FLC120 1984 thru 1987** Fits FLC120 SFA...
    PPR_300703
    SKU:
    PPR_300703
    Finish Options:
    Chrome-Plated
    Height Options:
    20 Inch
    Material Options:
    Steel
    Product Type:
    Bumpers
    Truck Class:
    Heavy Duty
    Type Options:
    Blind Mount
    Location:
    Made In USA
    Style Options:
    American Eagle Rolled End
    Size Options:
    10 Gauge
    Light Options:
    Without Lights
    Make:
    Kenworth
    Make:
    Peterbilt
    Make:
    Freightliner
    Make:
    Mack
    $1,982.99 - $2,189.99
    Qty in Cart: 0
    Price:
    $1,982.99 - $2,189.99
    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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