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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
  • Rectangle Low Profile Spyder Light - Red LED / Clear Lens

    Rectangle Low Profile Spyder Light - Red LED / Clear Lens

    GRAND GENERAL

    $31.65
    Red Rectangle Low Profile Spyder 20 Diode Stop Turn Tail Light* High Quality Spyder Light* Polycarbonate * Dimensions:  - 5 5/16 Inch Length   - 3 7/16 Inch Width   - 1 5/16 Inch Height * 20 Diode*...
    09-1601060319
    SKU:
    09-1601060319
    Shape Options:
    Rectangular
    Length Options:
    5 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Universal
    Product Type:
    Lighting
    Make:
    Universal Items
    $31.65
    Qty in Cart: 0
    Price:
    $31.65
    Subtotal:
  • On Sale
    Limited Quantity Available
    Long Toggle Switch Extension W/ Green Diamond Accent For Peterbilt

    Long Toggle Switch Extension W/ Green Diamond Accent For Peterbilt

    UNITED PACIFIC

    Now: $1.13
    Was: $4.38
    Toggle Switch Extension Long W/ Green Diamond Accent Fits Peterbilt* High Quality Toggle Switch Extension* Made Of Billet Aluminum* Long Design* Green Diamond Accent* 2.25 Inch Length* Sold...
    01-15010052
    SKU:
    01-15010052
    Color:
    Green
    Material Options:
    Billet Aluminum
    Product Type:
    Interior
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Now: $1.13
    Was: $4.38
    Qty in Cart: 0
    Price:
    Now: $1.13
    Was: $4.38
    Subtotal:
  • On Sale
    Limited Quantity Available
    Long Toggle Switch Extension W/ Red Diamond Accent For Peterbilt

    Long Toggle Switch Extension W/ Red Diamond Accent For Peterbilt

    UNITED PACIFIC

    Now: $1.15
    Was: $4.38
    Toggle Switch Extension Long W/ Red Diamond Accent* High Quality Toggle Switch Extension* Made Of Billet Aluminum* Long Design* Red Diamond Accent* 2.25 Inch Length* Sold Individually* Warranty On...
    01-15010051
    SKU:
    01-15010051
    Finish Options:
    Chrome-Plated
    Color:
    Red
    Product Type:
    Interior
    Location:
    Made In USA
    Material Options:
    Billet Aluminum
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Now: $1.15
    Was: $4.38
    Qty in Cart: 0
    Price:
    Now: $1.15
    Was: $4.38
    Subtotal:
  • On Sale
    Limited Quantity Available
    Short Toggle Switch Extension W/ Clear Diamond Accent For Peterbilt

    Short Toggle Switch Extension W/ Clear Diamond Accent For Peterbilt

    UNITED PACIFIC

    Now: $1.10
    Was: $4.68
    Toggle Switch Extension Short W/ Clear Diamond Accent Fits Peterbilt* High Quality Toggle Switch Extension* Made Of Billet Aluminum* Short Design* Clear Diamond Accent* Dimensions:  - 1.8750 Inch...
    01-15010024
    SKU:
    01-15010024
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Color:
    Clear
    Product Type:
    Interior
    Material Options:
    Billet Aluminum
    Ready To Ship:
    Yes
    Make:
    Peterbilt
    Now: $1.10
    Was: $4.68
    Qty in Cart: 0
    Price:
    Now: $1.10
    Was: $4.68
    Subtotal:
  • CSM 102 X 10 Inch Stainless Steel Full Rear Light Bar With 6 Round 4 Inch Light Holes

    CSM 102 X 10 Inch Stainless Steel Full Rear Light Bar With 6 Round 4 Inch Light Holes

    CHROME SHOP MAFIA

    $818.99
    Full Rear Light Bar W/ 6 - 4 Inch Round Light Holes By Chrome Shop Mafia* High Quality Rear Light Bar* Made Of 304 Stainless Steel* Flat Top Style* Includes:  - Rear Splash Panel To Protect Wiring...
    09-011037
    SKU:
    09-011037
    Color:
    Red
    Light Options:
    With Lights
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Bumpers
    Material Options:
    Stainless Steel
    $818.99
    Qty in Cart: 0
    Price:
    $818.99
    Subtotal:
  • CSM 94 X 9 Inch Stainless Steel Full Rear Light Bar With 8 Round 4 Inch Light Holes

    CSM 94 X 9 Inch Stainless Steel Full Rear Light Bar With 8 Round 4 Inch Light Holes

    CHROME SHOP MAFIA

    $891.99
    SS 94 Inch Wide Rear Light Bar W/ 8 Rnd 4 Inch Holes With Angled Top By Chrome Shop Mafia* High Quality Rear Light Bar* Made Of 304 Stainless Steel* Includes:  - Rear Splash Panel To Protect Wiring...
    09-011025
    SKU:
    09-011025
    Material Options:
    Stainless Steel
    Truck Class:
    Universal
    Product Type:
    Bumpers
    Make:
    Universal Items
    $891.99
    Qty in Cart: 0
    Price:
    $891.99
    Subtotal:
  • 2.5 Inch Round Spyder Marker Light Red LED / Red Lens

    2.5 Inch Round Spyder Marker Light Red LED / Red Lens

    GRAND GENERAL

    $10.14
    2.5 Inch Spyder LED Marker LightThe Spyder Marker Light is made of durable polycarbonate material. It features a 2 1/2-inch diameter and a 1/2-inch height. With 7 diodes, this light emits a bright...
    09-160106358
    SKU:
    09-160106358
    Color:
    Red
    Shape Options:
    Round
    Product Type:
    Lighting
    Truck Class:
    Universal
    Diameter Options:
    2 1/2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $10.14
    Qty in Cart: 0
    Price:
    $10.14
    Subtotal:
  • Legendary 3-1/2 Glass Watermelon Amber-Amber 3 Wire Dual Function W/O Bezel LED Light - Each

    Legendary 3-1/2 Glass Watermelon Amber-Amber 3 Wire Dual Function W/O Bezel LED Light - Each

    LEGENDARY

    $27.53
    Large Legendary Amber LED Watermelon LightGet your truck glowing with the Legendary large watermelon amber-amber LED light. Genuine glass, LED base, and easy dual function. Find it at Four State...
    09-160101320
    SKU:
    09-160101320
    Product Type:
    Lighting
    Material Options:
    Glass
    Style Options:
    Watermelon
    Diameter Options:
    3 1/2 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $27.53
    Qty in Cart: 0
    Price:
    $27.53
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Stainless Steel 20 Thread Door Striker Pin 1.9 Inch Length W/ 1/4 Inch Allen Head For Peterbilt Replaces 20-12972

    2 Stainless Steel 20 Thread Door Striker Pin 1.9 Inch Length W/ 1/4 Inch Allen Head For Peterbilt Replaces 20-12972

    AES MACHINE

    $56.99
    20 Thread Door Striker Pin Stainless Steel W/ 1.9 Inch Length W/ 1/4 Inch Allen Head Replaces 20-12972 Fits Peterbilt* High Quality Door Striker Pin* Made Of Corrosion Resistant Stainless Steel*...
    01-09140089
    SKU:
    01-09140089
    Product Type:
    Exterior
    $56.99
    Qty in Cart: 0
    Price:
    $56.99
    Subtotal:
  • Bawer Black Steel Toolbox Single Door 24 X 24 X 48 Inch

    Bawer Black Steel Toolbox Single Door 24 X 24 X 48 Inch

    BAWER TOOL BOXES

    $420.99
    24 X 24 X 48 Inch Black Steel Toolbox Single Door By BawerBuilt for demanding trucking and industrial applications, this black powder-coated steel toolbox offers secure, dependable storage while...
    TU807002
    SKU:
    TU807002
    Height Options:
    24 Inch
    Finish Options:
    Black Powder Coat
    Length Options:
    48 Inch
    Style Options:
    1 Door
    Product Type:
    Toolboxes
    Width Options:
    24 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $420.99
    Qty in Cart: 0
    Price:
    $420.99
    Subtotal:
  • Tinted Windshield Glass - Passenger Side For Peterbilt 379

    Tinted Windshield Glass - Passenger Side For Peterbilt 379

    OPP - ORIGINAL PARTS PROGRAM

    $284.99
    Passenger Side Tinited Windshield Glass Fits Peterbilt 379Keep your Peterbilt 379 cab looking sharp with this high-quality Passenger Side Tinted Windshield Glass. This replacement windshield glass is...
    201489820R
    SKU:
    201489820R
    Material Options:
    Glass
    Location:
    Made In USA
    Position:
    Passenger Side
    Truck Class:
    Heavy Duty
    Product Type:
    Exterior
    Make:
    Peterbilt
    $284.99
    Qty in Cart: 0
    Price:
    $284.99
    Subtotal:
  • FREE SHIPPING
    LC Chrome Plated Aluminum Front Oil Cap Kit W/ 4.5 Inch Bolt Pattern

    LC Chrome Plated Aluminum Front Oil Cap Kit W/ 4.5 Inch Bolt Pattern

    LINCOLN CHROME

    $418.99
    Chrome Plated Aluminum Front Oil Cap Kit W/ 4.5 Inch Bolt Pattern By Lincoln Chrome* High Quality Front Oil Cap Kit* Made Of Chrome-Plated Billet Aluminum* For Front Steer Wheels* 4.50 Inch Bolt...
    09-2004010
    SKU:
    09-2004010
    Material Options:
    Billet Aluminum
    Location:
    Made In USA
    Position:
    Front
    Finish Options:
    Chrome-Plated
    Product Type:
    Wheels
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $418.99
    Qty in Cart: 0
    Price:
    $418.99
    Subtotal:
  • On Sale
    Split Plastic Wire Loom - 1/2 Inch X 25 Feet - Purple

    Split Plastic Wire Loom - 1/2 Inch X 25 Feet - Purple

    TRUX ACCESSORIES

    Now: $0.09
    Was: $2.09
    Purple Split Wire Loom Plastic 1/2 Inch X 25 FeetThe 1/2 Inch Purple Split Plastic Wire Loom is a reliable solution for protecting and organizing electrical wiring in trucks, trailers, and automotive...
    09-16040131
    SKU:
    09-16040131
    Material Options:
    Plastic/Poly
    Color:
    Purple
    Product Type:
    Electronics
    Style Options:
    Split Loom Design
    Diameter Options:
    1/2 Inch
    Make:
    Universal Items
    Now: $0.09
    Was: $2.09
    Qty in Cart: 0
    Price:
    Now: $0.09
    Was: $2.09
    Subtotal:
  • On Sale
    Limited Quantity Available
    Continuous Female Round 2 Pin 100 Plug Wire Harness W/ 6 Inch Leads

    Continuous Female Round 2 Pin 100 Plug Wire Harness W/ 6 Inch Leads

    GRAND GENERAL

    Now: $1.15
    Was: $1.98
    100 Plug Round 2 Pin Female Plug Wire Harness W/ 6 Inch LeadsKeep your truck or trailer wiring organized with this Continuous Female Round 2 Pin Wire Harness. Made in the USA, this high-quality...
    09-160200355
    SKU:
    09-160200355
    Size Options:
    18 Gauge
    Location:
    Made In USA
    Style Options:
    2 Prong
    Truck Class:
    Universal
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $1.15
    Was: $1.98
    Qty in Cart: 0
    Price:
    Now: $1.15
    Was: $1.98
    Subtotal:
  • On Sale
    Limited Quantity Available
    Red 30 Diode 1156 LED Right Angle Bulb & Clear Lens

    Red 30 Diode 1156 LED Right Angle Bulb & Clear Lens

    UNITED PACIFIC

    Now: $6.49
    Was: $15.60
    1.438 Inch Red Right Angle 1156 BulbThis right angle 1156 single contact bulb features 30 super bright LEDs. It is epoxy sealed and is sold individually.* High Quality LED 1156 Bulb* Epoxy Sealed*...
    09-160106212
    SKU:
    09-160106212
    Location:
    Made In USA
    Color:
    Red/Clear
    Diameter Options:
    1 1/2 Inch
    Product Type:
    Lighting
    Height Options:
    2 1/4 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $6.49
    Was: $15.60
    Qty in Cart: 0
    Price:
    Now: $6.49
    Was: $15.60
    Subtotal:
  • Rectangle Spyder Light W/ SS Flange Bracket - Amber LED / Clear Lens

    Rectangle Spyder Light W/ SS Flange Bracket - Amber LED / Clear Lens

    GRAND GENERAL

    $46.92
    Amber Rectangle Spyder LED Light With Stainless Steel Bezel* High Quality Spyder Light* Polycarbonate* Dimensions:  - 5 5/16 Inch Length  - 3 7/16 Inch Width  - 1 5/16 Inch Height * 20 LEDs...
    09-1601011192
    SKU:
    09-1601011192
    Material Options:
    Plastic/Poly
    Truck Class:
    Universal
    Product Type:
    Lighting
    Shape Options:
    Rectangular
    Make:
    Universal Items
    $46.92
    Qty in Cart: 0
    Price:
    $46.92
    Subtotal:
  • On Sale
    Limited Quantity Available
    20 LED Spyder Low Profile Light W/ Plug - Amber LED/ Amber Lens

    20 LED Spyder Low Profile Light W/ Plug - Amber LED/ Amber Lens

    GRAND GENERAL

    Now: $13.03
    Was: $31.27
    Oval Low Profile LED Spyder Light W/ Plug* High Quality Spyder Light* Polycarbonate* Dimensions:  - 6 1/2 Inch Length  - 2 5/16 Inch Width  - 1 1/2 Inch Height* 20 Diodes* Park/Turn/Clearance...
    09-1601010327
    SKU:
    09-1601010327
    Length Options:
    6 1/2 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Universal
    Product Type:
    Lighting
    Shape Options:
    Oval
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $13.03
    Was: $31.27
    Qty in Cart: 0
    Price:
    Now: $13.03
    Was: $31.27
    Subtotal:
  • Minimizer Fifth Wheel Slick Dish 1/4 Inch Thick W/ Clipless Design

    Minimizer Fifth Wheel Slick Dish 1/4 Inch Thick W/ Clipless Design

    MINIMIZER

    $29.99
    Fifth Wheel Slick Dish 1/4 Inch Thick W/ Clipless Design By Minimizer* High Quality Fifth Wheel Slick Disk* Made Of UHMW Polyethylene* Clipless Design* No Retention Ring Required* 0.25 Inch Thick*...
    09-05110525
    SKU:
    09-05110525
    Shape Options:
    Round
    Height Options:
    1/4 Inch
    Material Options:
    Plastic/Poly
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $29.99
    Qty in Cart: 0
    Price:
    $29.99
    Subtotal:
  • FREE SHIPPING
    Lincoln Chrome 8 Inch Exhaust Kit, 1 Pc Stacks, W/Long Drop Elbows For Peterbilt 379, 378 & 389 Glider. Unibilt W/2 Cab Brackets

    Lincoln Chrome 8 Inch Exhaust Kit, 1 Pc Stacks, W/Long Drop Elbows For Peterbilt 379, 378 & 389 Glider. Unibilt W/2 Cab Brackets

    LINCOLN CHROME

    $3,552.99 - $5,365.99
    Are you looking to replace an exhaust? Stop searching, 4 State Trucks and Lincoln Chrome have got you covered. A damaged exhaust has the ability to decrease acceleration and power, increase fuel...
    01-08K830A1
    SKU:
    01-08K830A1
    Style Options:
    Bull Hauler Turn
    Diameter Options:
    8 Inch
    Finish Options:
    Chrome-Plated
    Height Options:
    72 Inch
    Height Options:
    120 Inch
    Height Options:
    108 Inch
    Material Options:
    Steel
    Location:
    Made In USA
    Height Options:
    84 Inch
    Style Options:
    Curve Turn
    Cab Style:
    Unibilt
    Position:
    Kit Full
    Height Options:
    114 Inch
    Style Options:
    Flat Top
    Height Options:
    96 Inch
    Product Type:
    Exhaust
    Make:
    Peterbilt
    Style Options:
    Miter Cut
    Style Options:
    Short 30 Turn
    Style Options:
    West Coast Turn
    Ready To Ship:
    Yes
    $3,552.99 - $5,365.99
    Qty in Cart: 0
    Price:
    $3,552.99 - $5,365.99
    Subtotal:
  • 6.5 Inch Oval Light With Optional Marker/Clearance, Stop Turn Tail or Back Up Single LED

    6.5 Inch Oval Light With Optional Marker/Clearance, Stop Turn Tail or Back Up Single LED

    GRAND GENERAL

    $10.85 - $12.04
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks6.5 Inch Oval Single LED Back Up Light - White LED / Clear LensOval Single High Power LED Sealed...
    PPR_301113
    SKU:
    PPR_301113
    Length Options:
    6 1/2 Inch
    Truck Class:
    Universal
    Shape Options:
    Oval
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $10.85 - $12.04
    Qty in Cart: 0
    Price:
    $10.85 - $12.04
    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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