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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
  • 24 X 24 Inch Black Mud Flap Smooth Front W/ Ribbed Back Design

    24 X 24 Inch Black Mud Flap Smooth Front W/ Ribbed Back Design

    UNITED PACIFIC

    $19.59
    Black Mud Flap Smooth Front W/ Ribbed Back Design 24 X 24 Inch* High Quality Mud Flap* Made Of PROFlex Recycled Rubber Polymer Blend* Smooth Front With Ribbed Back Design* Black* Dimensions:  - 24...
    09-050700285
    SKU:
    09-050700285
    Color:
    Black
    Material Options:
    Rubber
    Height Options:
    24 Inch
    Product Type:
    Mud Flaps
    Width Options:
    24 Inch
    Length Options:
    1/4 Inch
    Style Options:
    Ribbed
    Make:
    Universal Items
    $19.59
    Qty in Cart: 0
    Price:
    $19.59
    Subtotal:
  • LC 7 X 84 Inch Chrome Turn Out Stack

    LC 7 X 84 Inch Chrome Turn Out Stack

    LINCOLN CHROME

    $785.99
    7 X 84 Inch Chrome Turn Out Stack By Lincoln ChromeThis LC 7 x 84 Inch Chrome Turn Out Stack is built to deliver strength, style, and dependable performance for heavy-duty trucks. Constructed from...
    09-087084073
    SKU:
    09-087084073
    Product Type:
    Exhaust
    Diameter Options:
    7 Inch
    Location:
    Made In USA
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Height Options:
    84 Inch
    Make:
    Universal Items
    $785.99
    Qty in Cart: 0
    Price:
    $785.99
    Subtotal:
  • Standard Shock Relocate 4 Inch W/ 3/4 Pin

    Standard Shock Relocate 4 Inch W/ 3/4 Pin

    LOAD-SHARE SUSPENSIONS

    $236.99
    4 Inch Standard Shock Relocate W/ 3/4 Pin* High Quality Shock Relocate Kit* Designed To Relocate Shock Mounting Position* Standard Duty Application (Up To 12,000 Pound Capacity)* For 4 Inch Leaf...
    09-05090108
    SKU:
    09-05090108
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $236.99
    Qty in Cart: 0
    Price:
    $236.99
    Subtotal:
  • Aluminum Cab Rack W/ Chrome Plated Stainless Steel Door 68 X 80 Inch

    Aluminum Cab Rack W/ Chrome Plated Stainless Steel Door 68 X 80 Inch

    ALTTEC

    $2,111.99
    Aluminum Cab Rack W/ Center Tool Box, 2 Chain Racks & 2 Aluminum Trays* High Quality Cab Rack* Made Of Aluminum* Includes:  - Chrome Plated Stainless Steel Door  - Center Tool Box  - (2) Chain Racks ...
    09-0213010
    SKU:
    09-0213010
    Product Type:
    Cargo Control
    Ready To Ship:
    Yes
    Width Options:
    80 Inch
    Height Options:
    68 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    $2,111.99
    Qty in Cart: 0
    Price:
    $2,111.99
    Subtotal:
  • Holland No-Tilt ILS Slider Retrofit KIt

    Holland No-Tilt ILS Slider Retrofit KIt

    OPP - ORIGINAL PARTS PROGRAM

    $1,234.99
    Holland ILS Slider Retrofit Kit No-Tilt* High Quality Fifth Wheel Slider Retrofit Kit* Holland ILS No-Tilt Integrated Low-Weight Slider Design* Lightweight Bolt-On Construction* Slide-On No-Weld...
    09-051100934
    SKU:
    09-051100934
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $1,234.99
    Qty in Cart: 0
    Price:
    $1,234.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Push-On Bullet Nut Covers 11/16 Inch X 1 5/16 Inch - 50 Piece

    Chrome Push-On Bullet Nut Covers 11/16 Inch X 1 5/16 Inch - 50 Piece

    UNITED PACIFIC

    $48.12
    50 Piece Chrome Push On Bullet Nut Covers 11/16 Inch X 1 5/16 Inch* High Quality Nut Cover* Made Of Plastic* Triple Chrome Plating* Bullet Head Design* Used For Hex Nuts And Bolts* Dimensions:  -...
    09-05060099
    SKU:
    09-05060099
    Diameter Options:
    11/16 Inch
    Material Options:
    Plastic/Poly
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    Type Options:
    Push On
    Height Options:
    2 Inch
    Style Options:
    Bullet
    Make:
    Universal Items
    $48.12
    Qty in Cart: 0
    Price:
    $48.12
    Subtotal:
  • FREE SHIPPING OVER $249
    Bottom Bolt Thru Mud Flap Plates Stainless Steel 24 Inch X 4 Inch

    Bottom Bolt Thru Mud Flap Plates Stainless Steel 24 Inch X 4 Inch

    UNITED PACIFIC

    $58.99
    24 Inch X 4 Inch Stainless Steel Bottom Bolt Thru Mud Flap Plates* High Quality Bottom Mud Flap Plate* Made Of 304 Stainless Steel* Polished Shine Finish* Mounting Hardware Included* Dimensions:  -...
    09-050700281
    SKU:
    09-050700281
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Product Type:
    Mud Flaps
    Height Options:
    4 Inch
    Width Options:
    24 Inch
    Type Options:
    Bolt Mount
    Make:
    Universal Items
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • Stainless Steel Air Cylinder For Bumper Flip Kit

    Stainless Steel Air Cylinder For Bumper Flip Kit

    AFTERMARKET

    $197.99
    Air Cylinder For Bumper Flip Kit Stainless Steel* High Quality Air Cylinder* Made Of Stainless Steel* Designed For Bumper Flip Kit (Not Included)* Includes:  - Wear Ring  - Standard Bronze Rod...
    09-010800002
    SKU:
    09-010800002
    Product Type:
    Bumpers
    Ready To Ship:
    Yes
    Material Options:
    Stainless Steel
    Diameter Options:
    2 Inch
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • Stainless Steel Rear Light T-Bar 96 X 8 Inch W/ 8 4 Inch Light Holes

    Stainless Steel Rear Light T-Bar 96 X 8 Inch W/ 8 4 Inch Light Holes

    AFTERMARKET

    $1,073.99
    Rear Light T-Bar 96 X 8 Inch Stainless Steel W/ 8 4 Inch Light Holes* High Quality Rear Light Bar* Made Of 14 Gauge 304 Stainless Steel* Mirror Finish* T-Bar Design* Includes:  - (8) Round 4 Inch...
    09-011000760
    SKU:
    09-011000760
    Product Type:
    Bumpers
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Size Options:
    14 Gauge
    Finish Options:
    Polished
    Height Options:
    18 Inch
    Width Options:
    96 Inch
    Make:
    Universal Items
    $1,073.99
    Qty in Cart: 0
    Price:
    $1,073.99
    Subtotal:
  • FREE SHIPPING
    Sleeper Boot Big Hole Walkthrough For Peterbilt W/ Standard Cab / Flat Roof Replaces T09-6002

    Sleeper Boot Big Hole Walkthrough For Peterbilt W/ Standard Cab / Flat Roof Replaces T09-6002

    DAN'S SHOP

    $446.99
    Big Hole Walkthrough Rubber Sleeper Boot Replaces T09-6002 Peterbilt W/ Standard Cab / Flat Roof* High Quality Walkthrough Sleeper Boot* Made Of Heavy-Duty Molded Rubber* Big Hole Design* For...
    01-154202
    SKU:
    01-154202
    Color:
    Black
    Material Options:
    Rubber
    Product Type:
    Interior
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $446.99
    Qty in Cart: 0
    Price:
    $446.99
    Subtotal:
  • Robert James ZenEclipse Gray Lower Bunk Window Cover - Driver Side For Peterbilt W/ 63 Inch Sleeper

    Robert James ZenEclipse Gray Lower Bunk Window Cover - Driver Side For Peterbilt W/ 63 Inch Sleeper

    ROBERT JAMES ENTERPRISES

    $101.99
    Gray Driver Side ZenEclipse Lower Bunk Window Cover* High Quality Lower Bunk Window Cover* 7 Layers:  - (1) Ultraflect Nylon  - (3) Layers Of Polyester  - (1) Aluminum Fabric  - (1) 1/4 Inch Foam  -...
    01-154000061
    SKU:
    01-154000061
    Product Type:
    Interior
    Ready To Ship:
    Yes
    Material Options:
    Nylon
    Position:
    Driver Side
    Color:
    Gray
    Location:
    Made In USA
    Make:
    Peterbilt
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • BESTfit Stainless Steel Grille Surround 4 Piece For Peterbilt 379 Long Hood

    BESTfit Stainless Steel Grille Surround 4 Piece For Peterbilt 379 Long Hood

    BESTFIT TRUCK PARTS

    $755.99
    4 Piece Stainless Steel Grille Surround By BESTfit Fits Peterbilt 379 Long HoodGive your Peterbilt 379 Long Hood a premium appearance with this BESTfit 304 Stainless Steel Grille Surround. Featuring...
    01-12100086
    SKU:
    01-12100086
    Style Options:
    Long Hood
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Hood Parts & Acc.
    $755.99
    Qty in Cart: 0
    Price:
    $755.99
    Subtotal:
  • Roadworks Regular Hood Grill W/ 15 Louver Style Bars For Peterbilt 379

    Roadworks Regular Hood Grill W/ 15 Louver Style Bars For Peterbilt 379

    ROADWORKS

    $552.99
    Regular Hood Grill W/ 15 Louver Style Bars* High Quality Hood Grille Insert* Made Of Stainless Steel* Polished Mirror Finish* 15 Louver Style Bars* Fits Models With Tapered Grilles* Insert Only...
    01-12101001
    SKU:
    01-12101001
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Product Type:
    Hood Parts & Acc.
    Finish Options:
    Polished
    Style Options:
    Louvered
    Make:
    Peterbilt
    $552.99
    Qty in Cart: 0
    Price:
    $552.99
    Subtotal:
  • Turnpike Truck Trim 304 Stainless Steel Grille W/ Horizontal Rectangle Holes For Peterbilt 378 & 379

    Turnpike Truck Trim 304 Stainless Steel Grille W/ Horizontal Rectangle Holes For Peterbilt 378 & 379

    TURNPIKE TRUCK TRIM

    $331.99
    Stainless Steel Grille W/ Horizontal Rectangle Holes By Turnpike Truck Trim Fits Peterbilt 378 & 379Give your Peterbilt 378 or 379 a sleek, professional appearance with this Turnpike Truck Trim...
    01-12100081
    SKU:
    01-12100081
    Size Options:
    18 Gauge
    Style Options:
    Punched
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Product Type:
    Hood Parts & Acc.
    $331.99
    Qty in Cart: 0
    Price:
    $331.99
    Subtotal:
  • Sleeper Panel 6 Inch Wide Fiberglass - Passenger Side For Peterbilt W/ 63 Inch Sleeper & No Extension

    Sleeper Panel 6 Inch Wide Fiberglass - Passenger Side For Peterbilt W/ 63 Inch Sleeper & No Extension

    FIBERTECH

    $140.00
    Passenger Side Sleeper Panel 6 Inch Wide Fiberglass* High Quality Sleeper Panel* Made Of Fiberglass* For Models With 63 Inch Sleepers And No Extensions* 6 Inch Height* Passenger Side* Sold...
    01-101201278
    SKU:
    01-101201278
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    Height Options:
    6 Inch
    Material Options:
    Fiberglass
    Position:
    Passenger Side
    Make:
    Peterbilt
    $140.00
    Qty in Cart: 0
    Price:
    $140.00
    Subtotal:
  • FREE SHIPPING OVER $249
    LC 8 Inch Stainless Steel Upper Slider Exhaust Clamp For Peterbilt

    LC 8 Inch Stainless Steel Upper Slider Exhaust Clamp For Peterbilt

    LINCOLN CHROME

    $189.99
    8 Inch Stainless Steel Upper Slider Exhaust Clamp By Lincoln Chrome* High Quality Exhaust Clamp* Made Of Stainless Steel* Upper Slider* 8 Inch Diameter* Made In USA* Sold Individually* Warranty On...
    01-0800806
    SKU:
    01-0800806
    Diameter Options:
    8 Inch
    Position:
    Upper
    Product Type:
    Exhaust
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $189.99
    Qty in Cart: 0
    Price:
    $189.99
    Subtotal:
  • BESTfit Aluminum 26 X 33 1/2 Inch Fuel Tank Step Assembly Brackets For Peterbilt

    BESTfit Aluminum 26 X 33 1/2 Inch Fuel Tank Step Assembly Brackets For Peterbilt

    BESTFIT TRUCK PARTS

    $364.99
    Aluminum 26 X 33 1/2 Inch Fuel Tank Step Assembly Brackets By BESTfit Fits PeterbiltDesigned for Peterbilt trucks, this BESTfit Aluminum Fuel Tank Step Assembly Bracket offers a durable and reliable...
    01-06010028
    SKU:
    01-06010028
    Ready To Ship:
    Yes
    Height Options:
    33 1/2 Inch
    Finish Options:
    Mill Finish
    Material Options:
    Aluminum
    Width Options:
    26 Inch
    Make:
    Peterbilt
    Product Type:
    Fuel Tanks
    $364.99
    Qty in Cart: 0
    Price:
    $364.99
    Subtotal:
  • Turnpike Truck Trim Punched Tool Box 31 Inch Stainless Steel W/ Mirror Finish, Hinge & T Handle Latch Brackets For Peterbilt

    Turnpike Truck Trim Punched Tool Box 31 Inch Stainless Steel W/ Mirror Finish, Hinge & T Handle Latch Brackets For Peterbilt

    TURNPIKE TRUCK TRIM

    $1,130.99
    31 Inch Stainless Steel Tool Box W/ Mirror Finish, Hinge & T Handle Latch Brackets By Turnpike Truck Trim Fits PeterbiltAdd convenient storage and premium styling to your truck with this Turnpike...
    01-05020032
    SKU:
    01-05020032
    Style Options:
    Punched
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Length Options:
    31 Inch
    Make:
    Peterbilt
    Product Type:
    Toolboxes
    $1,130.99
    Qty in Cart: 0
    Price:
    $1,130.99
    Subtotal:
  • FREE SHIPPING
    Lincoln Chrome 8 Inch Exhaust Kit, 1 Pc Stacks, W/Long Drop Elbows For Peterbilt 379, 378 & 389 Glider. Day Cab W/4 Cab Brackets

    Lincoln Chrome 8 Inch Exhaust Kit, 1 Pc Stacks, W/Long Drop Elbows For Peterbilt 379, 378 & 389 Glider. Day Cab W/4 Cab Brackets

    LINCOLN CHROME

    $3,779.99 - $5,324.99
    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...
    01-08K830AD1
    SKU:
    01-08K830AD1
    Diameter Options:
    8 Inch
    Location:
    Made In USA
    Product Type:
    Exhaust
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Cab Style:
    Day Cab W/ 4 Cab Brackets
    Type Options:
    Long Drop Elbows
    Material Options:
    Chrome-Plated Steel
    Style Options:
    1 Piece Stacks
    $3,779.99 - $5,324.99
    Qty in Cart: 0
    Price:
    $3,779.99 - $5,324.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    142 Inch SS The Boss Long Drop Full Fender W/ Rolled Edge

    142 Inch SS The Boss Long Drop Full Fender W/ Rolled Edge

    TRUX ACCESSORIES

    Now: $1,075.35
    Was: $1,221.99
    29 X 24 X 142 Inch Long Drop 14 Gauge Stainless Steel Full Tandem FendersThis high quality 142 inch Stainless Steel "The Boss" Long Drop Full Fender with a Rolled Edge design. The fender has a long...
    09-11030302
    SKU:
    09-11030302
    Product Type:
    Rear Fenders
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Now: $1,075.35
    Was: $1,221.99
    Qty in Cart: 0
    Price:
    Now: $1,075.35
    Was: $1,221.99
    Subtotal:
  • Total: items /

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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