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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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  • Exhaust Manifold Replaces 3906741, 3932180 For Cummins 6CT/8.3L Engine

    Exhaust Manifold Replaces 3906741, 3932180 For Cummins 6CT/8.3L Engine

    AKMI

    $290.99
    Cummins 6CT/8.3L Exhaust ManifoldMaximize engine efficiency with this dependable Exhaust Manifold engineered for Cummins 6CT and 8.3L engines, replacing 3906741 and 3932180. Designed to withstand...
    29-071200045
    SKU:
    29-071200045
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $290.99
    Qty in Cart: 0
    Price:
    $290.99
    Subtotal:
  • Exhaust Manifold Replaces 3084656, 4003994 For Cummins M11/ISM

    Exhaust Manifold Replaces 3084656, 4003994 For Cummins M11/ISM

    AKMI

    $561.99
    Cummins M11/ISM Exhaust ManifoldKeep your rig operating smoothly with this durable Exhaust Manifold designed for Cummins M11 and ISM engines, replacing 3084656 and 4003994. Built for high-heat...
    29-071200047
    SKU:
    29-071200047
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $561.99
    Qty in Cart: 0
    Price:
    $561.99
    Subtotal:
  • Flywheel Replaces 4710303505, 4710306705, 4710306205 For Detroit DD13/DD15 2016-2019

    Flywheel Replaces 4710303505, 4710306705, 4710306205 For Detroit DD13/DD15 2016-2019

    AKMI

    $1,230.99
    150 Teeth Flywheel Fits Models W/ Detroit DD13/DD15 Engine & 17 Inch ClutchKeep your Detroit DD13/DD15 engine performing at its best with this high-quality Flywheel. Compatible with DT12...
    29-070400119
    SKU:
    29-070400119
    Product Type:
    Engine Parts
    Style Options:
    Detroit
    Make:
    Universal Items
    $1,230.99
    Qty in Cart: 0
    Price:
    $1,230.99
    Subtotal:
  • Flywheel Replaces 3693467, 3693468, 3693466 For Cummins X15

    Flywheel Replaces 3693467, 3693468, 3693466 For Cummins X15

    AKMI

    $1,004.99
    Flywheel Fits Models W/ Cummins X15 Engine & 17 Inch ClutchKeep your Cummins X15 running smoothly with this durable Flywheel, engineered for 17-inch clutch systems and Eaton Endurance transmissions...
    29-070400123
    SKU:
    29-070400123
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $1,004.99
    Qty in Cart: 0
    Price:
    $1,004.99
    Subtotal:
  • Stamped Steel Oil Pan Replaces 4710105113, 4710100113, 4710100213, 4710100513 For Detroit DD13 Engine

    Stamped Steel Oil Pan Replaces 4710105113, 4710100113, 4710100213, 4710100513 For Detroit DD13 Engine

    AKMI

    $1,318.99
    Detroit DD13 Stamped Steel Oil PanProtect vital engine components with this quality Stamped Steel Oil Pan engineered for Detroit DD13 engines, replacing part numbers 4710105113, 4710100113,...
    29-072000027
    SKU:
    29-072000027
    Product Type:
    Engine Parts
    Material Options:
    Steel
    Style Options:
    Detroit
    Make:
    Universal Items
    Color:
    Black
    $1,318.99
    Qty in Cart: 0
    Price:
    $1,318.99
    Subtotal:
  • Turbocharger Replaces 4P2858, OR6956, 7W9568, OR6169 For Caterpillar 3406B

    Turbocharger Replaces 4P2858, OR6956, 7W9568, OR6169 For Caterpillar 3406B

    AKMI

    $2,266.99
    Caterpillar 3406B TurbochargerPower through every mile with this high-performance Turbocharger made to replace 4P2858, OR6956, 7W9568, and OR6169 for Caterpillar 3406B applications. Designed to...
    29-070400124
    SKU:
    29-070400124
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,266.99
    Qty in Cart: 0
    Price:
    $2,266.99
    Subtotal:
  • Exhaust Manifold Replaces 3917668, 3929778 For Cummins 6CT/ISC

    Exhaust Manifold Replaces 3917668, 3929778 For Cummins 6CT/ISC

    AKMI

    $290.99
    Cummins 6CT/ISC Exhaust ManifoldSupport smooth engine operation with this quality Exhaust Manifold designed to replace part numbers 3917668 and 3929778 for Cummins 6CT/ISC engines. Engineered for...
    29-071200046
    SKU:
    29-071200046
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $290.99
    Qty in Cart: 0
    Price:
    $290.99
    Subtotal:
  • Flywheel Replaces 4710301205, 4710303405 For Detroit DD13/DD15 Engine

    Flywheel Replaces 4710301205, 4710303405 For Detroit DD13/DD15 Engine

    AKMI

    $1,153.99
    160 Teeth Flywheel Fits Models W/ Detroit DD13/DD15 Engine & 17 Inch ClutchMaintain peak performance for your 2013-2015 Detroit DD13 or DD15 engine with this premium Flywheel, designed to replace...
    29-070400118
    SKU:
    29-070400118
    Style Options:
    Detroit
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $1,153.99
    Qty in Cart: 0
    Price:
    $1,153.99
    Subtotal:
  • Camshaft Replaces 3680780, 3412284, 4059198, 4059333, 4298627 For Cummins ISX Engine

    Camshaft Replaces 3680780, 3412284, 4059198, 4059333, 4298627 For Cummins ISX Engine

    AKMI

    $1,957.99
    Cummins ISX CamshaftEnsure long-lasting reliability for your Cummins ISX engine with this forged billet steel Camshaft. Designed to replace 3680780, 3412284, 4059198, 4059333, and 4298627, it handles...
    29-070400120
    SKU:
    29-070400120
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Material Options:
    Billet Steel
    Make:
    Universal Items
    $1,957.99
    Qty in Cart: 0
    Price:
    $1,957.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Red Mini Button Style LED 1.2 Inch Clearance & Marker Light W/ Red Lens

    Red Mini Button Style LED 1.2 Inch Clearance & Marker Light W/ Red Lens

    TRUX ACCESSORIES

    $9.71
    Red Mini Button Style LED 1.2 Inch Marker Light W/ Chrome Plated Bezel & 2 Male BulletsGet a fresh, new look for your truck with this red LED marker light from Trux Accessories. 4 State Trucks can...
    09-1601060248
    SKU:
    09-1601060248
    Finish Options:
    Chrome-Plated
    Truck Class:
    Universal
    Diameter Options:
    3/4 Inch
    Material Options:
    Plastic/Poly
    Color:
    Red
    Shape Options:
    Round
    Product Type:
    Lighting
    Make:
    Universal Items
    $9.71
    Qty in Cart: 0
    Price:
    $9.71
    Subtotal:
  • FREE SHIPPING OVER $249
    0.75 Inch Red LED Clear Lens Mini Button Marker Light W/ 1 Diode

    0.75 Inch Red LED Clear Lens Mini Button Marker Light W/ 1 Diode

    TRUX ACCESSORIES

    $12.47
    LED Mini Button Marker Light Red W/ 1 Diode4 State Trucks offers this mini round marker light by Trux Accessories with 1 red diode and a shiny chrome bezel. Made to withstand outside elements, it is...
    09-1601060247
    SKU:
    09-1601060247
    Shape Options:
    Round
    Color:
    Red
    Truck Class:
    Universal
    Product Type:
    Lighting
    Diameter Options:
    3/4 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $12.47
    Qty in Cart: 0
    Price:
    $12.47
    Subtotal:
  • BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTFIT TRUCK PARTS

    $222.99
    BESTfit 3 X 10 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateKeep the exhaust balanced and exhaust gasses at lower temperatures with this quality Y Pipe. It is constructed...
    09-080100202
    SKU:
    09-080100202
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Diameter Options:
    3 Inch
    Make:
    Universal Items
    $222.99
    Qty in Cart: 0
    Price:
    $222.99
    Subtotal:
  • BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider Plate

    BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider Plate

    BESTFIT TRUCK PARTS

    $317.99
    BESTfit 4 X 12 X 26 Inch Aluminized Steel Universal Type A Y-Pipe With Divider PlateMade with an aluminized steel, this Universal Type A Y pipe is designed to keep the exhaust balance and gasses at...
    09-080100204
    SKU:
    09-080100204
    Length Options:
    12 Inch
    Height Options:
    12 Inch
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    4 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • BESTfit 3.5 X 10 X 14 Inch Aluminized Steel Universal Type A Y-Pipe W/ No Divider Plate

    BESTfit 3.5 X 10 X 14 Inch Aluminized Steel Universal Type A Y-Pipe W/ No Divider Plate

    BESTFIT TRUCK PARTS

    $194.99
    Aluminized Steel Type A Universal Y-Pipe W/ 10 Inch Tail & No Divider PlateKeep the exhaust balanced and gasses at lower temperatures with this quality Y Pipe. It is constructed with a corrosion and...
    09-080100203
    SKU:
    09-080100203
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    Truck Class:
    Heavy Duty
    Diameter Options:
    3 Inch
    Make:
    Universal Items
    $194.99
    Qty in Cart: 0
    Price:
    $194.99
    Subtotal:
  • BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider Plate

    BESTFIT TRUCK PARTS

    $256.99
    BESTfit 4 X 8 X 12 Inch Aluminized Steel Universal Type A Y-Pipe With No Divider PlateAre you wanting to increase engine power? 4 State trucks offers this quality Y Pipe that can improve the flow of...
    09-080100205
    SKU:
    09-080100205
    Diameter Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminized Steel
    Product Type:
    Exhaust
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $256.99
    Qty in Cart: 0
    Price:
    $256.99
    Subtotal:
  • Load- Share Air Ride Kit W/ Offset Bolt Brackets

    Load- Share Air Ride Kit W/ Offset Bolt Brackets

    LOAD-SHARE SUSPENSIONS

    $818.99
    Air Ride Kit W/ Offset Bolt BracketsAchieve smoother rides and better load management with the Load-Share Air Ride Kit with offset bolt brackets. Engineered to secure air ride components and ensure...
    29-09050087
    SKU:
    29-09050087
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Position:
    Kit Full
    Ready To Ship:
    Yes
    $818.99
    Qty in Cart: 0
    Price:
    $818.99
    Subtotal:
  • Load- Share Lower Air Bag Mount W/ U- Bolt Saddles For Load- Share Air Ride Assist Kit 10192 & 10193

    Load- Share Lower Air Bag Mount W/ U- Bolt Saddles For Load- Share Air Ride Assist Kit 10192 & 10193

    LOAD-SHARE SUSPENSIONS

    $72.99
    Lower Air Bag Mount W/ U- Bolt Saddles For Load- Share Air Ride Assist Kit 10192 & 10193Maintain peak performance of your Load-Share Air Ride Assist Kit with this Lower Air Bag Mount. Designed for...
    29-05090174
    SKU:
    29-05090174
    Position:
    Lower
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • Stainless Steel IFTA Permit Exhaust Bracket W/ 2 Watermelon Light Holes

    Stainless Steel IFTA Permit Exhaust Bracket W/ 2 Watermelon Light Holes

    JML KUSTOMS

    $122.99
    IFTA Permit Exhaust Bracket W/ 1 Watermelon Light Hole Per BracketImprove your truck's compliance and front-end appearance with this Stainless Steel IFTA Permit Exhaust Bracket. Made from 304...
    09-161000063
    SKU:
    09-161000063
    Product Type:
    Lighting
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    $122.99
    Qty in Cart: 0
    Price:
    $122.99
    Subtotal:
  • Stainless Steel IFTA Permit Exhaust Bracket W/ 2 Watermelon Light Holes & Sticker Space

    Stainless Steel IFTA Permit Exhaust Bracket W/ 2 Watermelon Light Holes & Sticker Space

    JML KUSTOMS

    $163.99
    IFTA Permit Exhaust Bracket W/ 1 Watermelon Light Hole Per Bracket & Sticker SpaceEquip your truck with this Stainless Steel IFTA Permit Exhaust Bracket, crafted to securely display IFTA and permit...
    09-161000062
    SKU:
    09-161000062
    Product Type:
    Lighting
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    $163.99
    Qty in Cart: 0
    Price:
    $163.99
    Subtotal:
  • Smooth Steel 75 Gallon L-Shape Transfer Tank For Light Duty Trucks

    Smooth Steel 75 Gallon L-Shape Transfer Tank For Light Duty Trucks

    AFTERMARKET

    $883.99
    Choose Option(s) to see description.Fitment** Fits Chevrolet Silverado 1500 ** Fits Chevrolet Silverado 1500 Classic ** Fits Chevrolet Silverado 1500 LTD ** Fits Chevrolet Silverado 2500 ** Fits...
    PPR_300225
    SKU:
    PPR_300225
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Make:
    Peterbilt
    Length Options:
    48 Inch
    Color:
    Black
    Truck Class:
    Universal
    Height Options:
    24 Inch
    Color:
    White
    Width Options:
    27 Inch
    Make:
    Universal Items
    Product Type:
    Cargo Control
    $883.99
    Qty in Cart: 0
    Price:
    $883.99
    Subtotal:
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Adding your products to cart

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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