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Kenworth T800 Parts

Shop for Kenworth T800 parts and accessories to maintain and customize your heavy-duty truck components, from the interior sleeper to the exterior cab.
  • Product
  • Qty in Cart
  • Quantity
  • Price
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  • 6 Inch Single Lead Wires With .180 Bullet Termination, Stripped End & Color Options 10 Pack

    6 Inch Single Lead Wires With .180 Bullet Termination, Stripped End & Color Options 10 Pack

    UNITED PACIFIC

    $12.35
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks6 Inch Black Single Lead Wires With .180 Bullet Termination & Stripped End - 10 Pack6 Inch Single Lead...
    PPR_299740
    SKU:
    PPR_299740
    Length Options:
    6 Inch
    Color:
    White
    Color:
    Black
    Style Options:
    Single Convolute
    Size Options:
    16 Gauge
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $12.35
    Qty in Cart: 0
    Price:
    $12.35
    Subtotal:
  • Dual Function 3rd Brake Light With Black Swivel Pedestal Base

    Dual Function 3rd Brake Light With Black Swivel Pedestal Base

    UNITED PACIFIC

    $36.67
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksDual Function 3rd Brake Light With Black Swivel Pedestal Base - Red LED / Red Lens10 Diode Dual...
    PPR_299739
    SKU:
    PPR_299739
    Width Options:
    8 1/2 Inch
    Length Options:
    1 3/4 Inch
    Degree Options:
    180
    Color:
    Red
    Style Options:
    Swivel
    Product Type:
    Lighting
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Style Options:
    Black Housing
    $36.67
    Qty in Cart: 0
    Price:
    $36.67
    Subtotal:
  • 29 Inch Heavy Duty Full Tandem Fender Mounting Arm Kit

    29 Inch Heavy Duty Full Tandem Fender Mounting Arm Kit

    UNITED PACIFIC

    $590.99 - $680.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks29 Inch Full Tandem Fender Mounting Arm Kit - 9 Inch Adjustable430 SS Universal Standard Full Tandem...
    PPR_299732
    SKU:
    PPR_299732
    Type Options:
    Half
    Length Options:
    29 Inch
    Size Options:
    14 Gauge
    Product Type:
    Rear Fenders
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Style Options:
    Full Fender
    Position:
    Kit Full
    $590.99 - $680.99
    Qty in Cart: 0
    Price:
    $590.99 - $680.99
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  • Stainless Steel Smooth Half Fender With Rolled Edge 16 Gauge

    Stainless Steel Smooth Half Fender With Rolled Edge 16 Gauge

    UNITED PACIFIC

    $815.99 - $880.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks60 Inch Stainless Steel Smooth Half Fender With Rolled Edge 16 Gauge16 Gauge SS Roll Formed Edge Half...
    PPR_299734
    SKU:
    PPR_299734
    Length Options:
    80 Inch
    Size Options:
    16 Gauge
    Length Options:
    66 Inch
    Width Options:
    45 Inch
    Product Type:
    Rear Fenders
    Length Options:
    60 Inch
    Finish Options:
    Smooth
    Width Options:
    31 Inch
    Material Options:
    Stainless Steel
    Width Options:
    25 Inch
    Type Options:
    Half
    Make:
    Universal Items
    Style Options:
    Half Fender
    Position:
    Kit Full
    $815.99 - $880.99
    Qty in Cart: 0
    Price:
    $815.99 - $880.99
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  • Stainless Steel Smooth Half Fender 16 Gauge

    Stainless Steel Smooth Half Fender 16 Gauge

    UNITED PACIFIC

    $437.99 - $807.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks60 Inch Stainless Steel Smooth Half Fender 16 GaugeSE Series 16 Gauge SS Half FenderThis 16-gauge...
    PPR_299733
    SKU:
    PPR_299733
    Length Options:
    80 Inch
    Size Options:
    16 Gauge
    Length Options:
    66 Inch
    Width Options:
    45 Inch
    Product Type:
    Rear Fenders
    Length Options:
    60 Inch
    Finish Options:
    Smooth
    Width Options:
    31 Inch
    Material Options:
    Stainless Steel
    Width Options:
    25 Inch
    Type Options:
    Half
    Make:
    Universal Items
    Style Options:
    Half Fender
    $437.99 - $807.99
    Qty in Cart: 0
    Price:
    $437.99 - $807.99
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  • W.T.I. XL Single Axle Fender

    W.T.I. XL Single Axle Fender

    WTI FENDERS

    $433.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksWTI 48.5 X 26 X 30.5 Inch Gray Fiberglass Single Axle Fender W/ Small Trim48.5 X 26 X 30.5 Inch Gray...
    PPR_299617
    SKU:
    PPR_299617
    Height Options:
    30 1/2 Inch
    Location:
    Made In USA
    Color:
    Gray
    Style Options:
    Small Trim
    Length Options:
    48 1/2 Inch
    Color:
    White
    Color:
    Black
    Product Type:
    Rear Fenders
    Length Options:
    48 Inch
    Width Options:
    26 Inch
    Height Options:
    30 Inch
    Style Options:
    Mid Trim
    Material Options:
    Fiberglass
    Style Options:
    Wide Trim
    Make:
    Universal Items
    $433.99
    Qty in Cart: 0
    Price:
    $433.99
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Limited Quantity Available
    Polished Decorative Grille Bar With 2 Pointed Ends

    Polished Decorative Grille Bar With 2 Pointed Ends

    TURNPIKE TRUCK TRIM

    $21.68 - $38.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks31.5 Inch Stainless Steel Grille Bar W/ 2 Pointed Ends31.5 Inch Grille Bar W/ 2 Pointed Ends* High...
    PPR_299592
    SKU:
    PPR_299592
    Length Options:
    31 1/2 Inch
    Length Options:
    38 Inch
    Style Options:
    Pointed
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Length Options:
    34 Inch
    Length Options:
    33 1/2 Inch
    Length Options:
    37 Inch
    Length Options:
    39 1/2 Inch
    Length Options:
    39 Inch
    Product Type:
    Hood Parts & Acc.
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $21.68 - $38.99
    Qty in Cart: 0
    Price:
    $21.68 - $38.99
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Limited Quantity Available
    Drive Hub Cover With Punched Holes

    Drive Hub Cover With Punched Holes

    AFTERMARKET

    $76.99 - $109.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksStainless Steel Hub Cover W/ Punched Hole Design For Dana Spicer Drive Axle Ends8.75 X 5.5 Inch Hub...
    PPR_299594
    SKU:
    PPR_299594
    Position:
    Rear
    Style Options:
    Rockwell
    Diameter Options:
    5 1/2 Inch
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Height Options:
    5 Inch
    Style Options:
    Punched
    Style Options:
    Dana Spicer
    Height Options:
    5 1/2 Inch
    Product Type:
    Wheels
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $76.99 - $109.99
    Qty in Cart: 0
    Price:
    $76.99 - $109.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Universal Stealth Black Rear High Hats

    Universal Stealth Black Rear High Hats

    REALWHEELS

    $111.29 - $159.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksRealWheels 8 Inch Stealth Black Rear High Hat W/ 8.25- 8.75 Inch Drive Axle, 5.75- 7.75 Inch Axle...
    PPR_299622
    SKU:
    PPR_299622
    Product Type:
    Wheels
    Make:
    Universal Items
    Color:
    Black
    Height Options:
    8 Inch
    Style Options:
    High Hat
    Finish Options:
    Black Powder Coat
    Diameter Options:
    8 Inch
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Height Options:
    10 Inch
    Type Options:
    Standard Mount
    Position:
    Rear
    Ready To Ship:
    Yes
    $111.29 - $159.99
    Qty in Cart: 0
    Price:
    $111.29 - $159.99
    Subtotal:
  • Wiring Harness W/ 1 male Packard Plug & 7 Dual Bullet Plugs

    Wiring Harness W/ 1 male Packard Plug & 7 Dual Bullet Plugs

    PHOENIX DESIGN

    $15.39
    Wiring Harness W/ 1 male Packard Plug & 7 Dual Bullet Plugs For Air Breather LightsUpgrade or replace your air breather light connections with this premium wiring harness, featuring 1 male Packard...
    09-1603056
    SKU:
    09-1603056
    Style Options:
    Bullet
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $15.39
    Qty in Cart: 0
    Price:
    $15.39
    Subtotal:
  • On Sale
    Limited Quantity Available
    Rotator Assembly W/ Chrome Reflector

    Rotator Assembly W/ Chrome Reflector

    STAR HEADLIGHT & LANTERN CO.

    Now: $9.84
    Was: $39.49
    Rotator Assembly W/ Complete Motor & Reflector AssemblyEnsure your vehicle runs at peak efficiency with this durable Rotator Assembly, designed for long-lasting performance under heavy-duty...
    09-1609501
    SKU:
    09-1609501
    Truck Class:
    Heavy Duty
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $9.84
    Was: $39.49
    Qty in Cart: 0
    Price:
    Now: $9.84
    Was: $39.49
    Subtotal:
  • Steel Plug O-Ring Boss Hydraulic Adapter

    Steel Plug O-Ring Boss Hydraulic Adapter

    AUTOMANN USA

    $2.27 - $2.31
    The steel plug O-ring boss hydraulic adapter offers a reliable solution for sealing or adapting O-ring boss ports in hydraulic systems and is available in multiple size options to fit your setup. You...
    PPR_299730
    SKU:
    PPR_299730
    Length Options:
    3/4 Inch
    Material Options:
    Steel
    Product Type:
    Cargo Control
    Make:
    Universal Items
    $2.27 - $2.31
    Qty in Cart: 0
    Price:
    $2.27 - $2.31
    Subtotal:
  • 1/2 Inch -13 Thread-On Gearshift Knob With Eaton Fuller Style 9/10 Shifter Adapter

    1/2 Inch -13 Thread-On Gearshift Knob With Eaton Fuller Style 9/10 Shifter Adapter

    UNITED PACIFIC

    $69.99
    Upgrade your shifting experience with the 1/2-inch-13 threaded gearshift knob that includes an Eaton Fuller-style 9/10 shifter adapter, designed for versatile fitment across a range of transmissions...
    PPR_299726
    SKU:
    PPR_299726
    Style Options:
    Thread On
    Color:
    Black
    Material Options:
    Aluminum
    Product Type:
    Interior
    Make:
    Universal Items
    $69.99
    Qty in Cart: 0
    Price:
    $69.99
    Subtotal:
  • Gun Cylinder 13/15/18 Speed Gearshift Knob

    Gun Cylinder 13/15/18 Speed Gearshift Knob

    UNITED PACIFIC

    $59.99
    Add distinctive style and improved feel to your rig with the gun cylinder gearshift knob designed for 13, 15, and 18-speed transmissions. This eye-catching knob features a rugged, firearm-inspired...
    PPR_299729
    SKU:
    PPR_299729
    Color:
    Black
    Color:
    Blue
    Color:
    Orange
    Color:
    Red
    Color:
    Green
    Color:
    Yellow
    Color:
    Silver
    Material Options:
    Aluminum
    Color:
    White
    Product Type:
    Interior
    Style Options:
    Thread On
    Make:
    Universal Items
    Make:
    Peterbilt
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • Dietz Style Headlight Housing & 34222 Pigtail

    Dietz Style Headlight Housing & 34222 Pigtail

    UNITED PACIFIC

    $56.99 - $106.99
    The Dietz-style headlight housing with pigtail provides a classic, versatile lighting solution for standard 7 inch sealed beam, halogen, and most LED headlight bulbs. Designed for straightforward...
    PPR_299731
    SKU:
    PPR_299731
    Finish Options:
    Black Powder Coat
    Diameter Options:
    7 Inch
    Finish Options:
    Chrome-Plated
    Color:
    Black
    Product Type:
    Lighting
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Make:
    Universal Items
    $56.99 - $106.99
    Qty in Cart: 0
    Price:
    $56.99 - $106.99
    Subtotal:
  • Chrome Interior Rear View Mirror, Screw-On Mount

    Chrome Interior Rear View Mirror, Screw-On Mount

    UNITED PACIFIC

    $42.42
    Add a polished, classic touch to your cab with the chrome interior rear view mirror featuring a screw-on mount and your choice of rectangular or oval shape to suit your style and visibility needs...
    PPR_299728
    SKU:
    PPR_299728
    Shape Options:
    Oval
    Material Options:
    Aluminum
    Style Options:
    Thread On
    Finish Options:
    Chrome-Plated
    Shape Options:
    Rectangular
    Product Type:
    Interior
    Make:
    Universal Items
    $42.42
    Qty in Cart: 0
    Price:
    $42.42
    Subtotal:
  • 1/2 Inch -13 Thread-On Gearshift Knob With Eaton Fuller Style 13/15/18 Shifter Adapter

    1/2 Inch -13 Thread-On Gearshift Knob With Eaton Fuller Style 13/15/18 Shifter Adapter

    UNITED PACIFIC

    $69.99
    Add a custom touch and improved feel to your shifter with the 1/2-inch-13 threaded gearshift knob that includes an Eaton Fuller-style 13/15/18 shifter adapter for versatile fitment. This replacement...
    PPR_299725
    SKU:
    PPR_299725
    Color:
    Black
    Product Type:
    Interior
    Material Options:
    Aluminum
    Style Options:
    Thread On
    Make:
    Universal Items
    $69.99
    Qty in Cart: 0
    Price:
    $69.99
    Subtotal:
  • Chrome Interior Rear View Mirror, Glue On Mount

    Chrome Interior Rear View Mirror, Glue On Mount

    UNITED PACIFIC

    $42.42
    Add a polished touch to your cab with a rectangular or oval shaped chrome interior rear view mirror featuring a glue-on mount for easy installation. This sleek mirror delivers a clean, reflective...
    PPR_299727
    SKU:
    PPR_299727
    Finish Options:
    Chrome-Plated
    Product Type:
    Interior
    Shape Options:
    Rectangular
    Shape Options:
    Oval
    Material Options:
    Aluminum
    Make:
    Universal Items
    $42.42
    Qty in Cart: 0
    Price:
    $42.42
    Subtotal:
  • Pressure Protection Valve

    Pressure Protection Valve

    VELVAC

    $39.70 - $52.99
    The pressure protection valve available from 4 State Trucks helps maintain air system integrity by allowing air to flow only after system pressure reaches the chosen threshold, protecting critical...
    PPR_299712
    SKU:
    PPR_299712
    Product Type:
    Air, Electrical, & Safety
    Location:
    Made In USA
    Rating:
    55 PSI
    Make:
    Universal Items
    Material Options:
    Steel
    $39.70 - $52.99
    Qty in Cart: 0
    Price:
    $39.70 - $52.99
    Subtotal:
  • Stop/Turn 3rd Brake Light with Swivel Pedestal Base - Red LED / Red Lens

    Stop/Turn 3rd Brake Light with Swivel Pedestal Base - Red LED / Red Lens

    UNITED PACIFIC

    $32.10
    The stop/turn 3rd brake light with an adjustable pedestal base delivers bright, reliable visibility with red LEDs under a red lens, making it an excellent choice for enhanced safety on the road...
    PPR_299713
    SKU:
    PPR_299713
    Product Type:
    Lighting
    Color:
    Red
    Material Options:
    Plastic/Poly
    Style Options:
    LED
    Make:
    Universal Items
    Degree Options:
    180
    Style Options:
    Split Function
    $32.10
    Qty in Cart: 0
    Price:
    $32.10
    Subtotal:
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Shop Kenworth T800 Parts & Accessories

Restore or customize your Class 7 or 8 vocational rig with our massive inventory of heavy-duty Kenworth T800 parts and Kenworth T800 accessories. We stock direct-fit aftermarket components from top-tier brands to keep your heavy-hauler running strong and looking sharp.

Direct-Fit Kenworth T800 Replacement Parts

Reduce downtime with our selection of commercial-grade repair components. Find durable replacement parts for every area of your rig, including drivetrain components, HVAC systems, engine cooling (CACs and radiators), brake parts, and steering U-joints.

Exterior Chrome & Custom Lighting

Build a custom show rig or upgrade your daily driver with exact-fit exterior accessories:

Kenworth T800 Interior Accessories

Improve sleeper bunk comfort, in-cab organization, and dashboard appeal. Refresh your cabin with direct-fit Kenworth T800 interior dash panels and heavy-duty Kenworth T800 cab flooring upgrades.

Why Buy Kenworth T800 Parts From 4 State Trucks?

Dealership OEM parts are often expensive and backordered. Our aftermarket and OEM-equivalent parts deliver the reliability you need to stay on the road, alongside several key advantages:

Better Value: Significant cost savings and faster shipping replacement times than OEM.

Guaranteed Fitment: Commercial-grade parts engineered exactly for your truck's year and model.

Maximum Customization: A broader array of styles, finishes, and designs than the factory offers.

For 45 years, owner-operators, diesel repair shops, and fleet managers have trusted 4 State Trucks. Get fast shipping and real-time support from a team that knows and loves big rigs.

Frequently Asked Questions About Kenworth T800 Parts

What years are your Kenworth T800 parts compatible with, and how do I verify fitment for my specific truck?

Our Kenworth T800 parts are designed to fit models from 1987 through 2014, though specific compatibility varies by part. To verify fitment, check your truck's OEM plate located on the driver's side door jamb and note your exact model year and configuration (hood length, axle configuration). For bumpers and exterior parts, also note whether you have a set-forward or set-back front axle. When in doubt, contact our support team with your OEM and we'll confirm compatibility before you order.

Are your T800 bumpers made from chrome-plated steel or stainless steel, and what's the difference in durability?

We offer both chrome-plated steel and polished stainless steel bumpers for the T800. Chrome-plated bumpers provide an excellent mirror finish at a lower price point but require regular maintenance to prevent rust, especially in areas with road salt. Stainless steel bumpers cost more initially but resist corrosion without special care and maintain their appearance longer. For trucks operating in harsh weather conditions or coastal areas, we recommend stainless steel for its superior longevity.

Do I need to drill new holes or make modifications to install replacement bumpers and grilles on my T800?

Most of our T800 replacement bumpers and grilles are designed as direct bolt-on replacements using existing mounting points. However, if you're upgrading from a standard bumper to a heavy-duty or custom style, some drilling may be required. Each product page specifies whether modifications are needed. Basic installation typically requires standard hand tools and takes 2-4 hours. We include detailed instructions with each part, and mounting hardware is included unless otherwise noted.

What's the difference between OEM-style and aftermarket T800 parts in terms of fit and quality?

OEM-style parts are manufactured to match original Kenworth specifications exactly, ensuring precise fit and finish. Aftermarket options often provide enhanced features like heavier gauge steel, additional chrome plating layers, or improved mounting systems. Both meet DOT requirements where applicable. Aftermarket parts typically offer better value and may include upgrades like pre-drilled light holes or reinforced mounting brackets that weren't available on original equipment.

Can I install T800 parts myself, or should I have a shop do it? What special tools are required?

Many T800 parts like mirror brackets, grab handles, and smaller accessories can be installed with basic tools in your own shop. Larger components like bumpers, hoods, and fenders are manageable with two people and standard tools including socket sets, wrenches, and a drill. You'll need a torque wrench for critical fasteners. Professional installation is recommended for air ride suspensions, complete exhaust systems, or if you're uncomfortable working with heavy components. Always support heavy parts properly during installation to prevent injury or damage.


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