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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.
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  • Knoedler Air Chief Mid Back Seat W/ 3 Bladder Lumbar, LH Arm- Black & Red Synthetic Leather

    Knoedler Air Chief Mid Back Seat W/ 3 Bladder Lumbar, LH Arm- Black & Red Synthetic Leather

    KNOEDLER

    $1,439.99
    Long drives demand superior support, and the Knoedler Air Chief Mid Back Seat delivers exactly that. Designed as a low rider seat with armrest, it features a 3-bladder lumbar system, dual-chamber...
    PPR_300773
    SKU:
    PPR_300773
    Color:
    Black
    Material Options:
    Synthetic Leather
    Height Options:
    20 Inch
    Style Options:
    Mid Back
    Degree Options:
    45
    Product Type:
    Seats
    Material Options:
    Leather
    Make:
    Universal Items
    $1,439.99
    Qty in Cart: 0
    Price:
    $1,439.99
    Subtotal:
  • 34 Inch Stainless Steel Rear Razored Reverse T-Bar Light Bar W/ Light Hole Options

    34 Inch Stainless Steel Rear Razored Reverse T-Bar Light Bar W/ Light Hole Options

    ARANDA TRUCK ACCESSORIES

    $1,412.99
    Reinforce both safety and style with this 34-inch stainless steel rear razored reverse T-bar light bar. Featuring a razored reverse T-bar design and light holes, it allows truckers to mount multiple...
    PPR_300774
    SKU:
    PPR_300774
    Light Options:
    Without Lights
    Size Options:
    14 Gauge
    Material Options:
    Stainless Steel
    Width Options:
    34 Inch
    Finish Options:
    Polished
    Location:
    Made In USA
    Product Type:
    Bumpers
    Make:
    Universal Items
    $1,412.99
    Qty in Cart: 0
    Price:
    $1,412.99
    Subtotal:
  • EZ Claw Flange Mount 3-in-1 Non Wrapped and Hydraulic Line Saver Kit W/ 2 Slings, 1 Hose And Cable Block, 25 Lb & 40 Lb Tensioner

    EZ Claw Flange Mount 3-in-1 Non Wrapped and Hydraulic Line Saver Kit W/ 2 Slings, 1 Hose And Cable Block, 25 Lb & 40 Lb Tensioner

    EZ CLAW

    $831.99
    Engineered for trucks that run hard and demand reliable hose control, the EZ Claw Flange Mount 3-in-1 Non Wrapped and Hydraulic Line Saver Kit. This comprehensive kit features a 25 lb tensioner with...
    PPR_300767
    SKU:
    PPR_300767
    Product Type:
    Cargo Control
    Make:
    Universal Items
    $831.99
    Qty in Cart: 0
    Price:
    $831.99
    Subtotal:
  • EZ Claw Black Steel Flange Mount Bracket

    EZ Claw Black Steel Flange Mount Bracket

    EZ CLAW

    $96.99
    Reliable cab-mounted support is easy with the EZ Claw Black Steel Flange Mount Bracket. With 11 inches of clearance and precision laser-cut, robotically welded construction, it provides a durable...
    PPR_300769
    SKU:
    PPR_300769
    Product Type:
    Cargo Control
    Make:
    Universal Items
    $96.99
    Qty in Cart: 0
    Price:
    $96.99
    Subtotal:
  • 18 Inch Chrome Aluminum Blaze Style Steering Wheel With Black Leather Rim

    18 Inch Chrome Aluminum Blaze Style Steering Wheel With Black Leather Rim

    UNITED PACIFIC

    $556.99
    Blaze Chrome Aluminum Steering Wheel With Black Rim* High Quality Steering Wheel* Chrome-Plated Aluminum* Black* 18 Inch* Blaze Style * With Black Leather Rim * Hub And Horn Button Assembly Available...
    09-1500422
    SKU:
    09-1500422
    Truck Class:
    Heavy Duty
    Product Type:
    Interior
    Diameter Options:
    18 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    $556.99
    Qty in Cart: 0
    Price:
    $556.99
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch Red LED Light Kit - Pack Of 5

    2 Inch Red LED Light Kit - Pack Of 5

    TRUX ACCESSORIES

    $17.05
    9 Diode 2 Inch Round Red LED Clearance-Marker Light W/ Red Lens - Sold as 5 PackDo you need a bright marker or clearance light? 4 State Trucks offers this pack of 5 quality 2-inch round red LED light...
    CSMLIGHTKIT2
    SKU:
    CSMLIGHTKIT2
    Product Type:
    Lighting
    Diameter Options:
    2 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Universal
    Shape Options:
    Round
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $17.05
    Qty in Cart: 0
    Price:
    $17.05
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch Amber LED Light Kit - Pack Of 5

    2 Inch Amber LED Light Kit - Pack Of 5

    TRUX ACCESSORIES

    $26.50
    9 Diode 2 Inch Round Amber LED Clearance-Marker Light W/ Amber Lens - Sold as 5 Pack4 State Trucks offers this 5 piece quality 2-inch round amber lights. Each light features 9 diodes and a damage...
    CSMLIGHTKIT3
    SKU:
    CSMLIGHTKIT3
    Diameter Options:
    2 Inch
    Material Options:
    Plastic/Poly
    Shape Options:
    Round
    Truck Class:
    Universal
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $26.50
    Qty in Cart: 0
    Price:
    $26.50
    Subtotal:
  • Merritt Aluminum 13 X 15.5 X 16 Inch 2 Battery Box With Step & Deck Plate

    Merritt Aluminum 13 X 15.5 X 16 Inch 2 Battery Box With Step & Deck Plate

    MERRITT

    $1,387.99
    Aluminum 13 Inch X 15.5 Inch X 16 Inch Battery Box With Step & Deck PlateStore up to two batteries horizontally with this high quality aluminum box with a step. It mounts on the side and features a...
    3562
    SKU:
    3562
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $1,387.99
    Qty in Cart: 0
    Price:
    $1,387.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Merritt Aluminum 16.25 X 23 X 30.125 Inch 6 Battery Box Without Step

    Merritt Aluminum 16.25 X 23 X 30.125 Inch 6 Battery Box Without Step

    MERRITT

    Now: $605.17
    Was: $1,197.99
    Aluminum 16.25 Inch X 23 Inch X 30.125 Inch Battery Box Without StepsThis high quality 16.25 X 23 X 30.125 inch Merritt aluminum battery box has a tread plate cover and does not have a step or top...
    491
    SKU:
    491
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $605.17
    Was: $1,197.99
    Qty in Cart: 0
    Price:
    Now: $605.17
    Was: $1,197.99
    Subtotal:
  • Merritt Aluminum 16.43 X 20.25 X 25.25 Inch 4 Battery Box With Top Deck & Without Step

    Merritt Aluminum 16.43 X 20.25 X 25.25 Inch 4 Battery Box With Top Deck & Without Step

    MERRITT

    $2,540.99
    Diamond Plate Aluminum Inch Battery Box With Deck Plate & Without StepThis high quality 16.43 X 20.25 X 25.25 inch Merritt aluminum battery box has a tread plate cover and a step, but not a top deck...
    3504
    SKU:
    3504
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $2,540.99
    Qty in Cart: 0
    Price:
    $2,540.99
    Subtotal:
  • Merritt Aluminum 25 X 25 X 16 Inch 4 Battery Box With Step & Deck Plate

    Merritt Aluminum 25 X 25 X 16 Inch 4 Battery Box With Step & Deck Plate

    MERRITT

    $2,030.99
    Aluminum 25 Inch X 25 Inch X 16 Inch Battery Box With Step & Deck PlateThis high quality 16 X 25 X 25 inch Merritt aluminum battery box has a tread plate cover, a step, and a top deck plate. The box...
    3556
    SKU:
    3556
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $2,030.99
    Qty in Cart: 0
    Price:
    $2,030.99
    Subtotal:
  • Merritt Aluminum 24 X 25 X 25 Inch 6 Battery Box With Step & Deck Plate

    Merritt Aluminum 24 X 25 X 25 Inch 6 Battery Box With Step & Deck Plate

    MERRITT

    $2,616.99
    Aluminum 24 Inch X 25 Inch X 25 Inch Battery Box With Step & Deck PlateThis high quality 24 X 25 X 25 inch Merritt aluminum battery box has a tread plate cover, a step, and a top deck plate. The box...
    3563
    SKU:
    3563
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Make:
    Universal Items
    $2,616.99
    Qty in Cart: 0
    Price:
    $2,616.99
    Subtotal:
  • Merritt Aluminum 24.43 X 20.25 X 25.25 Inch 6 Battery Box Without Step & Deck Plate

    Merritt Aluminum 24.43 X 20.25 X 25.25 Inch 6 Battery Box Without Step & Deck Plate

    MERRITT

    $1,964.99
    Diamond Plate Aluminum Battery Box Without Step & Deck PlateThis high quality 24.43 X 20.25 X 25.25 inch Merritt aluminum battery box has a tread plate cover and does not have a step or top deck...
    3514
    SKU:
    3514
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Make:
    Universal Items
    $1,964.99
    Qty in Cart: 0
    Price:
    $1,964.99
    Subtotal:
  • Merritt Aluminum 18 X 28.875 X 30.125 Inch 6 Battery Box With Steps

    Merritt Aluminum 18 X 28.875 X 30.125 Inch 6 Battery Box With Steps

    MERRITT

    $1,470.99
    Aluminum 18 Inch X 28.875 Inch X 30.125 Inch Battery Box With StepsThis high quality 18 X 28.875 X 30.125 inch Merritt aluminum battery box has a tread plate cover and a step, but not a top deck...
    490
    SKU:
    490
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $1,470.99
    Qty in Cart: 0
    Price:
    $1,470.99
    Subtotal:
  • Merritt Aluminum 12 X 20 X 16 Inch 2 Battery Box & Deck Plate

    Merritt Aluminum 12 X 20 X 16 Inch 2 Battery Box & Deck Plate

    MERRITT

    $938.99
    Aluminum 12 Inch X 20 Inch 16 Inch Battery Box Without Step & Deck PlateThis strong and well engineered battery box is made out of a light weight aluminum alloy that is made to last. Its security...
    3521
    SKU:
    3521
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $938.99
    Qty in Cart: 0
    Price:
    $938.99
    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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