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Peterbilt Parts

Shop aftermarket Peterbilt truck parts and accessories at 4 State Trucks. We stock exact-fit, OEM-alternative semi truck parts for classic and next-gen models (379, 579, 389+)—from PACCAR MX-13 engine upgrades to custom chrome stacks and interior sleeper-cab restorations.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Chrome Projection Headlight Passenger Side W/ LED Position For Peterbilt 386 & 387

    Chrome Projection Headlight Passenger Side W/ LED Position For Peterbilt 386 & 387

    GRAND GENERAL

    $233.66
    Passenger Side Chrome Projection Headlight Fits Peterbilt 386 & 387Enhance visibility and modernize your truck's appearance with this Chrome Projection Headlight Passenger Side with LED Position...
    01-16060041
    SKU:
    01-16060041
    Product Type:
    Lighting
    Style Options:
    Chrome Housing
    Position:
    Passenger Side
    Make:
    Peterbilt
    $233.66
    Qty in Cart: 0
    Price:
    $233.66
    Subtotal:
  • FREE SHIPPING OVER $219
    BESTfit Aluminum Upper Door Grab Handle 8.11 Inch For Peterbilt

    BESTfit Aluminum Upper Door Grab Handle 8.11 Inch For Peterbilt

    BESTFIT TRUCK PARTS

    $109.99
    8.11 Inch Aluminum Upper Door Grab Handle By BESTfit Fits PeterbiltEnhance your Peterbilt truck with the BESTfit Aluminum Upper Door Grab Handle featuring a polished chrome finish. Made from durable...
    01-1520056
    SKU:
    01-1520056
    Product Type:
    Exterior
    Finish Options:
    Chrome-Plated
    Length Options:
    8 1/8 Inch
    Material Options:
    Billet Aluminum
    Make:
    Peterbilt
    $109.99
    Qty in Cart: 0
    Price:
    $109.99
    Subtotal:
  • Oxblood Door Panels W/ Passenger Side Lower Window For Peterbilt 359 & 378

    Oxblood Door Panels W/ Passenger Side Lower Window For Peterbilt 359 & 378

    TRUCK-N AWESOME

    $825.00
    Door Panels With Rounded Lower Window On Passenger Door Fits Peterbilt 359, 378Upgrade your Peterbilt's interior with these premium Oxblood Door Panels with Passenger Side Lower Window, designed...
    01-15230209
    SKU:
    01-15230209
    Product Type:
    Interior
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Location:
    Made In USA
    Material Options:
    Vinyl
    Color:
    Red
    Position:
    Passenger Side
    $825.00
    Qty in Cart: 0
    Price:
    $825.00
    Subtotal:
  • FREE SHIPPING
    BESTfit Chrome Exhaust Kit W/ 7-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTfit Chrome Exhaust Kit W/ 7-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTFIT TRUCK PARTS

    $3,044.98
    Chrome Exhaust Kit W/ 7-5 LD Elbows & No Top Stack/Spool By BESTfit Fits Peterbilt 378, 379 & 389 Glider* High Quality Exhaust Kit* Long Drop Design* Includes:  - (2) 7 Inch To 5 Inch 90 Degree...
    01-0897005
    SKU:
    01-0897005
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Material Options:
    Chrome-Plated Steel
    Style Options:
    No Stacks
    Type Options:
    Long Drop Elbows
    Diameter Options:
    7 Inch
    Cab Style:
    Unibilt W/2 Cab Brackets
    $3,044.98
    Qty in Cart: 0
    Price:
    $3,044.98
    Subtotal:
  • FREE SHIPPING
    BESTfit Chrome Exhaust Kit W/ 8-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTfit Chrome Exhaust Kit W/ 8-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTFIT TRUCK PARTS

    $3,184.98
    Chrome Exhaust Kit W/ 8-5 LD Elbows & No Top Stack/Spool By BESTfit Fits Peterbilt 378, 379 & 389 Glider* High Quality Exhaust Kit* Long Drop Design* Includes:  - (2) 8 Inch To 5 Inch 90 Degree...
    01-0898005
    SKU:
    01-0898005
    Ready To Ship:
    Yes
    Location:
    Made In USA
    Make:
    Peterbilt
    Product Type:
    Exhaust
    Diameter Options:
    8 Inch
    Cab Style:
    Unibilt W/2 Cab Brackets
    Material Options:
    Chrome-Plated Steel
    Type Options:
    Long Drop Elbows
    Style Options:
    No Stacks
    $3,184.98
    Qty in Cart: 0
    Price:
    $3,184.98
    Subtotal:
  • FREE SHIPPING
    BESTfit Retro Style Exhaust Kit W/ 6-5 PB Elbows & 55 Spool For Peterbilt 378, 379 & 389 Glider

    BESTfit Retro Style Exhaust Kit W/ 6-5 PB Elbows & 55 Spool For Peterbilt 378, 379 & 389 Glider

    BESTFIT TRUCK PARTS

    $2,543.74
    Retro Style Exhaust Kit W/ 6-5 PB Elbows & 55 Spool By BESTfit Fits Peterbilt 378, 379 & 389 Glider* High Quality Exhaust Kit* Retro OE Style Design* Includes:  - (2) 6 Inch To 5 Inch OE Style Chrome...
    01-0896009
    SKU:
    01-0896009
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Style Options:
    No Stacks
    Type Options:
    OE Style Elbows
    Material Options:
    Chrome-Plated Steel
    Cab Style:
    Unibilt W/2 Cab Brackets
    Diameter Options:
    6 Inch
    $2,543.74
    Qty in Cart: 0
    Price:
    $2,543.74
    Subtotal:
  • BESTfit Chrome Tapered Top Exhaust Elbow W/ 60 Degree Bend & 8 Inch OD - 5 Inch OD For Peterbilt 379

    BESTfit Chrome Tapered Top Exhaust Elbow W/ 60 Degree Bend & 8 Inch OD - 5 Inch OD For Peterbilt 379

    BESTFIT TRUCK PARTS

    $512.99
    Chrome Tapered Top Exhaust Elbow W/ 60 Degree Bend & 8 Inch ID, 5 Inch OD By BESTfit Fits Peterbilt 379* High Quality Exhaust Elbow* Made Of Chrome Plated Steel* 60 Degree Bend* Tapered Top*...
    01-0818530564
    SKU:
    01-0818530564
    Product Type:
    Exhaust
    Diameter Options:
    8 To 5 Inch
    Style Options:
    Tapered
    Degree Options:
    60
    Material Options:
    Steel
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $512.99
    Qty in Cart: 0
    Price:
    $512.99
    Subtotal:
  • FREE SHIPPING
    BESTfit Retro Style Exhaust Kit W/ 6-5 PB Elbows & 52 Spool For Peterbilt 378 & 379

    BESTfit Retro Style Exhaust Kit W/ 6-5 PB Elbows & 52 Spool For Peterbilt 378 & 379

    BESTFIT TRUCK PARTS

    $2,543.74
    Retro Style Exhaust Kit W/ 6-5 PB Elbows & 52 Spool By BESTfit Fits Peterbilt 378 & 379* High Quality Exhaust Kit* Retro OE Style Design* Includes:  - (2) 6 Inch To 5 Inch OE Style Chrome Exhaust...
    01-0896008
    SKU:
    01-0896008
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Type Options:
    OE Style Elbows
    Cab Style:
    Unibilt W/2 Cab Brackets
    Diameter Options:
    6 Inch
    Style Options:
    No Stacks
    Material Options:
    Chrome-Plated Steel
    $2,543.74
    Qty in Cart: 0
    Price:
    $2,543.74
    Subtotal:
  • FREE SHIPPING
    BESTfit Exhaust Kit W/ 6-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTfit Exhaust Kit W/ 6-5 LD Elbows & No Top Stack/Spool For Peterbilt 378, 379 & 389 Glider

    BESTFIT TRUCK PARTS

    $2,834.98
    Exhaust Kit W/ 6-5 LD Elbows & No Top Stack/Spool By BESTfit Fits Peterbilt 378, 379 & 389 Glider* High Quality Exhaust Kit* Long Drop Design* Includes:  - (2) 6 Inch To 5 Inch 90 Degree Exhaust...
    01-0896007
    SKU:
    01-0896007
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    Diameter Options:
    6 Inch
    Cab Style:
    Unibilt W/2 Cab Brackets
    Material Options:
    Chrome-Plated Steel
    Type Options:
    Long Drop Elbows
    Style Options:
    No Stacks
    $2,834.98
    Qty in Cart: 0
    Price:
    $2,834.98
    Subtotal:
  • BESTfit Chrome Tapered Top Exhaust Elbow W/ 90 Degree Bend & LD Design For Peterbilt 378, 379 & 389 Glider

    BESTfit Chrome Tapered Top Exhaust Elbow W/ 90 Degree Bend & LD Design For Peterbilt 378, 379 & 389 Glider

    BESTFIT TRUCK PARTS

    $512.99
    Chrome Tapered Top Exhaust Elbow W/ 90 Degree Bend & LD Design By BESTfit Fits Peterbilt 378, 379 & 389 Glider* High Quality Exhaust Elbow* Made Of Chrome Plated Steel* 90 Degree Bend* Long Drop...
    01-080185004
    SKU:
    01-080185004
    Product Type:
    Exhaust
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Diameter Options:
    8 To 5 Inch
    Type Options:
    Long Drop
    Degree Options:
    90
    Material Options:
    Steel
    Make:
    Peterbilt
    $512.99
    Qty in Cart: 0
    Price:
    $512.99
    Subtotal:
  • BESTfit Stainless Steel Exhaust Clamp Kit For Peterbilt

    BESTfit Stainless Steel Exhaust Clamp Kit For Peterbilt

    BESTFIT TRUCK PARTS

    $381.99
    Stainless Steel Exhaust Clamp Kit By BESTfit Fits PeterbiltThe BESTfit Stainless Steel Exhaust Clamp Kit for Peterbilt provides everything needed to securely mount and support your truck's exhaust...
    01-0800500K01
    SKU:
    01-0800500K01
    Product Type:
    Exhaust
    Ready To Ship:
    Yes
    Diameter Options:
    5 Inch
    Material Options:
    Stainless Steel
    Position:
    Kit Full
    Make:
    Peterbilt
    $381.99
    Qty in Cart: 0
    Price:
    $381.99
    Subtotal:
  • BESTfit Chrome Exhaust Clamp W/ Wide Band Design & Angled Mount Bracket For Peterbilt

    BESTfit Chrome Exhaust Clamp W/ Wide Band Design & Angled Mount Bracket For Peterbilt

    BESTFIT TRUCK PARTS

    $129.99
    6 Inch Chrome Exhaust Clamp W/ Wide Band Design & Angled Mount Bracket By BESTfit Fits Peterbilt* High Quality Exhaust Clamp* Made Of Chrome Plated Steel* Wide Band Design* Angled Mount Bracket*...
    01-08006003
    SKU:
    01-08006003
    Product Type:
    Exhaust
    Location:
    Made In USA
    Width Options:
    3 Inch
    Finish Options:
    Chrome-Plated
    Type Options:
    Angled
    Diameter Options:
    6 Inch
    Style Options:
    Wide Style
    Material Options:
    Steel
    Make:
    Peterbilt
    $129.99
    Qty in Cart: 0
    Price:
    $129.99
    Subtotal:
  • BESTfit Stainless Steel Exhaust Cab Bracket W/ Angled Mount Design For Peterbilt 379

    BESTfit Stainless Steel Exhaust Cab Bracket W/ Angled Mount Design For Peterbilt 379

    BESTFIT TRUCK PARTS

    $109.99
    Stainless Steel Exhaust Cab Bracket W/ Angled Mount Design By BESTfit Fits Peterbilt 379Provide reliable exhaust system support with the BESTfit Stainless Steel Exhaust Cab Bracket with Angled Mount...
    01-080000017
    SKU:
    01-080000017
    Product Type:
    Exhaust
    Location:
    Made In USA
    Finish Options:
    Polished
    Cab Style:
    Unibilt
    Type Options:
    Angled
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    $109.99
    Qty in Cart: 0
    Price:
    $109.99
    Subtotal:
  • BESTfit Chrome Exhaust Clamp W/ Wide Band Design For Peterbilt

    BESTfit Chrome Exhaust Clamp W/ Wide Band Design For Peterbilt

    BESTFIT TRUCK PARTS

    $129.99
    6 Inch Chrome Exhaust Clamp W/ Wide Band Design By BESTfit Fits Peterbilt* High Quality Exhaust Clamp* Made Of Chrome Plated Steel* Wide Band Design* Straight Mount Bracket* Mounting Hardware...
    01-08006002
    SKU:
    01-08006002
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Type Options:
    Straight Mount
    Diameter Options:
    6 Inch
    Style Options:
    Wide Style
    Material Options:
    Steel
    Location:
    Made In USA
    Width Options:
    3 Inch
    Make:
    Peterbilt
    $129.99
    Qty in Cart: 0
    Price:
    $129.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminum A/C Expansion Valve Block Type W/ Flange Mount For Peterbilt

    BESTfit Aluminum A/C Expansion Valve Block Type W/ Flange Mount For Peterbilt

    BESTFIT TRUCK PARTS

    $46.99
    Aluminum A/C Expansion Valve Block Type W/ Flange Mount By BESTfit Fits PeterbiltRestore efficient cooling performance with the BESTfit Aluminum A/C Expansion Valve Block Type with Flange Mount for...
    01-070000043
    SKU:
    01-070000043
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Type Options:
    Flange Mount
    Make:
    Peterbilt
    $46.99
    Qty in Cart: 0
    Price:
    $46.99
    Subtotal:
  • FREE SHIPPING
    BESTfit 11 X 13.750 Inch A/C Evaporator W/ Orifice Tube Valve Type & Plate Fin Design For Peterbilt

    BESTfit 11 X 13.750 Inch A/C Evaporator W/ Orifice Tube Valve Type & Plate Fin Design For Peterbilt

    BESTFIT TRUCK PARTS

    $384.99
    11 X 13.750 Inch A/C Evaporator W/ Orifice Tube Valve Type & Plate Fin Design By BESTfit Fits PeterbiltKeep your Peterbilt's air conditioning system performing at peak efficiency with the BESTfit 11...
    01-070000045
    SKU:
    01-070000045
    Product Type:
    Engine Parts
    Make:
    Peterbilt
    $384.99
    Qty in Cart: 0
    Price:
    $384.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Internal Equalized Thermal Expansion 16.5 Inch Capillary Tube Length For Peterbilt

    BESTfit Internal Equalized Thermal Expansion 16.5 Inch Capillary Tube Length For Peterbilt

    BESTFIT TRUCK PARTS

    $64.99
    Internal Equalized Thermal Expansion 16.5 Inch Capillary Tube Length By BESTfit Fits PeterbiltThe BESTfit Internal Equalized Thermal Expansion Valve with 16.5 Inch Capillary Tube is designed to...
    01-070000044
    SKU:
    01-070000044
    Product Type:
    Engine Parts
    Material Options:
    Brass
    Make:
    Peterbilt
    $64.99
    Qty in Cart: 0
    Price:
    $64.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Stainless Steel Bumper Support Bracket For Peterbilt 378 & 379 W/ 20 & 22 Inch Bumper

    BESTfit Stainless Steel Bumper Support Bracket For Peterbilt 378 & 379 W/ 20 & 22 Inch Bumper

    BESTFIT TRUCK PARTS

    $132.99
    Stainless Steel Bumper Support Bracket For 20 & 22 Inch Bumper By BESTfit Fits Peterbilt 378 & 379 W/ 20 & 22 Inch BumperThe BESTfit Stainless Steel Bumper Support Bracket Set is a dependable upgrade...
    01-0114016
    SKU:
    01-0114016
    Product Type:
    Bumpers
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $132.99
    Qty in Cart: 0
    Price:
    $132.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Stainless Steel Lower Bumper Support Brackets For Peterbilt 378 & 379 W/ 16, 18 & 20 Inch Bumper

    BESTfit Stainless Steel Lower Bumper Support Brackets For Peterbilt 378 & 379 W/ 16, 18 & 20 Inch Bumper

    BESTFIT TRUCK PARTS

    $122.99
    Stainless Steel Lower Bumper Support Brackets By BESTfit Fits Peterbilt 378 & 379 W/ 16, 18 & 20 Inch BumperEnhance the strength and appearance of your truck's front end with BESTfit Stainless Steel...
    01-0114015
    SKU:
    01-0114015
    Product Type:
    Bumpers
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Location:
    Made In USA
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $122.99
    Qty in Cart: 0
    Price:
    $122.99
    Subtotal:
  • FREE SHIPPING OVER $249
    10 LED 4 Inch Stop. Turn And Tail Light Kit, Red LED/ Red Lens

    10 LED 4 Inch Stop. Turn And Tail Light Kit, Red LED/ Red Lens

    UNITED PACIFIC

    $17.22
    Red LED Light Kit With 3 Contact Female Plug* High Quality Stop/Turn/Tail LED Light* Solid State Circuit Board Design* DOT/SAE, FMVSS 108* IP67 Water Resistant Rating* Includes:  - Polycarbonate...
    09-16090248
    SKU:
    09-16090248
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Make:
    Universal Items
    Shape Options:
    Round
    $17.22
    Qty in Cart: 0
    Price:
    $17.22
    Subtotal:
  • Total: items /

Adding your products to cart

Premium Peterbilt Truck Parts, Accessories & Chrome Upgrades

Find the perfect accessories to personalize your truck inside and out. Upgrade the exterior cab with chrome drop visors, grilles, bumpers, exhaust stacks, Peterbilt deck plates, and rear bumper Peterbilt light bars, or decorate your sleeper with Peterbilt lighting solutions, like dual-revolution watermelon lights, or stainless steel side panel trim, and custom vinyl flooring upgrades. Get precise fitments on replacement parts, new chrome, and interior cab accessories whether you drive a classic 1987 Peterbilt 379 model or a modern 567 or 579 model. Search by VIN, part number, or make/model, and filter through multiple brands, colors, prices, sizes, dimensions, materials, and more.
We stock thousands of made-to-order parts that ship directly from our warehouse to your address. From under-the-hood performance parts, like turbos and Peterbilt radiators, to stylish Peterbilt chrome exterior parts, like Peterbilt 389 spot mirrors and Peterbilt 379 replacement mirrors. Our comprehensive assortment of make/model specific parts can meet any need. - Add more fuel storage with a Peterbilt fuel tank replacement, and accessories like Peterbilt 379 fuel caps or 567/579 Fuel Caps. - Dampen excess bounce and vibration with Peterbilt shocks. - Customize the exterior with long-drop chrome exhaust elbows and other chrome accessories. - Refurbish the sleeper with Peterbilt 379 and 389 interior trim kits.

Aftermarket parts are designed to meet or exceed OEM specifications while giving Peterbilt owners a more affordable price point and wider in-stock availability. Experience fast shipping and reliable delivery for thousands of aftermarket and OEM-equivalent Peterbilt truck parts.

Frequently Asked Questions About Peterbilt Parts

Which Peterbilt parts fit my specific truck model and year?

Peterbilt parts compatibility varies significantly by model (379, 389, 567, 579) and year range. Most aftermarket parts list specific model years they fit, such as "2005-2007 379" or "2008+ 389." Always check the product description for your exact model/year combination. Key differences include hood lengths (127" vs 131"), headlight configurations (dual vs quad), and mounting hole patterns. When in doubt, contact us with your OEM number for verification before ordering.

What's the difference between OEM and aftermarket Peterbilt parts quality?

OEM parts are manufactured to Peterbilt's exact specifications, ensuring perfect fit and original quality. Aftermarket parts vary widely - premium brands like Jones Performance and Roadworks match or exceed OEM quality with enhanced features, while economy options may use thinner materials or less precise manufacturing. For critical components like air lines and electrical parts, OEM or premium aftermarket is recommended. For cosmetic items like grille bars or light bezels, quality aftermarket options provide excellent value.

How difficult is it to install Peterbilt bumpers and exterior accessories?

Most Peterbilt bumpers install in 2–3 hours with basic tools and often require two people due to their weight. Grilles and light bars are usually faster, often taking 30–60 minutes. Some aftermarket parts may need minor drilling, wiring, or clearance adjustments, while complex electrical or suspension-related installs are best left to a professional.

What finishes and materials are available for Peterbilt chrome parts?

Peterbilt parts come in several finishes: mirror-polished stainless steel (most durable, won't rust), triple-chrome plated steel (classic look, requires maintenance), powder-coated aluminum (lightweight, various colors), and ABS plastic chrome (economical, for non-structural parts). Stainless steel costs more initially but lasts longer in harsh conditions. Chrome-plated parts offer the brightest shine but need regular polishing and can pit in winter climates. Powder coating provides color options and good durability for brackets and non-show parts.

Do I need to modify my Peterbilt to install aftermarket parts?

Most quality aftermarket parts are designed as direct replacements requiring no modifications. However, some situations require minor adjustments: custom bumpers may need new bracket holes drilled, LED conversions might require resistors or flasher relay changes, and oversized parts like 20-inch bumpers on pre-2005 models may need spacers. Always verify "direct fit" claims in product descriptions. Parts requiring cutting, welding, or significant modifications will be clearly noted. Keep factory parts when possible in case you need to return to stock configuration.


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