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Kenworth T660 Parts

The Kenworth T660 semi truck model is a good example of Kenworth's commitment to providing great trucks and great value and we can make you stand out even more by customizing your semi truck with quality aftermarket and custom parts and chrome accessories from 4 State Trucks. Whether you want to update your KW exhaust, fenders, or fuel tank, 4 State Trucks has the right aftermarket parts for the job. Hit the highway in safety and style in your Kenworth heavy duty truck or 18 wheeler.
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  • Black Oval Belt Buckle W/ International Logo

    Black Oval Belt Buckle W/ International Logo

    DELPANN

    $72.95
    Oval Belt Buckle Black W/ International LogoElevate your style with this Black Oval Belt Buckle, featuring the classic International logo. Constructed from resin and billet aluminum, it is...
    09-23000310
    SKU:
    09-23000310
    Material Options:
    Billet Aluminum
    Product Type:
    Apparel
    Color:
    Black
    Shape Options:
    Oval
    Height Options:
    2 1/2 Inch
    Width Options:
    3 1/2 Inch
    Make:
    Universal Items
    Make:
    International
    Ready To Ship:
    Yes
    $72.95
    Qty in Cart: 0
    Price:
    $72.95
    Subtotal:
  • Yellow Small Rectangular Key Cover W/ Kenworth Text Logo

    Yellow Small Rectangular Key Cover W/ Kenworth Text Logo

    DELPANN

    $42.40
    Kenworth Small Rectangular Key Cover Yellow W/ Text LogoAdd a touch of style and protection to your Kenworth keys with this Yellow Small Rectangular Key Cover. Crafted from chrome-plated billet...
    02-15012056
    SKU:
    02-15012056
    Finish Options:
    Chrome-Plated
    Material Options:
    Billet Aluminum
    Product Type:
    Interior
    Color:
    Yellow
    Make:
    Kenworth
    $42.40
    Qty in Cart: 0
    Price:
    $42.40
    Subtotal:
  • Metallic Black Rectangular Belt Buckle W/ Peterbilt Logo

    Metallic Black Rectangular Belt Buckle W/ Peterbilt Logo

    DELPANN

    $69.00
    Peterbilt Rectangular Belt Buckle W/ Logo- Metallic BlackShow off your Peterbilt pride with this Metallic Black Rectangular Belt Buckle, designed for durability and style. Crafted from resin and...
    01-2200001
    SKU:
    01-2200001
    Finish Options:
    Chrome-Plated
    Height Options:
    2 1/2 Inch
    Shape Options:
    Rectangular
    Width Options:
    3 1/2 Inch
    Product Type:
    Apparel
    Color:
    Black
    Material Options:
    Billet Aluminum
    Make:
    Peterbilt
    Make:
    Universal Items
    $69.00
    Qty in Cart: 0
    Price:
    $69.00
    Subtotal:
  • Hogebuilt Rogue Series 80 Inch Stainless Steel Half Fenders

    Hogebuilt Rogue Series 80 Inch Stainless Steel Half Fenders

    HOGEBUILT FENDERS

    $1,127.99 - $1,747.99
    The Hogebuilt Rogue Series 80 Inch Stainless Steel Half Fenders combine rugged strength with custom styling. Available in 304 and 430 stainless steel, these Ultimate Low Rider fenders resist rust,...
    PPR_300296
    SKU:
    PPR_300296
    Length Options:
    80 Inch
    Material Options:
    Stainless Steel
    Product Type:
    Rear Fenders
    Size Options:
    14 Gauge
    Make:
    Universal Items
    Style Options:
    Low Rider Style
    Height Options:
    30 Inch
    Ready To Ship:
    Yes
    $1,127.99 - $1,747.99
    Qty in Cart: 0
    Price:
    $1,127.99 - $1,747.99
    Subtotal:
  • 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:
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Adding your products to cart

Keeping your Kenworth T660 in top shape? This parts lineup has everything you need whether you're doing regular maintenance, repairs, or adding some personal style. The T660 is known for its power, efficiency, and driver comfort, and this collection of parts helps you keep it all running smooth. you'll find engine and drivetrain components, performance parts, and all the essentials to stay road-ready. Want to upgrade your rig's appearance? Check out the bumpers, grilles, lights, and mud flaps made to fit the T660 just right. Inside the cab, you'll find comfort-focused upgrades like new seats, storage solutions, and electrical components that make long hauls a little easier. From filters and hoses to full chrome trim kits, this lineup covers every corner of your truck front to back, inside and out. Whether you're swapping out worn parts or customizing your ride, this is your one-stop shop for Kenworth T660 parts and accessories. Built for durability. Designed for comfort. Backed by quality. Ready when you are.

Frequently Asked Questions About Kenworth T660 Parts

What years are Kenworth T660 parts compatible with, and are they interchangeable between model years?

Kenworth T660 parts are designed for trucks manufactured from 2008 to 2016. While many parts are interchangeable across these years, some components underwent updates. For example, bumpers from 2008-2012 models may have different mounting points than 2013-2016 versions. Always verify your specific OEM and model year before ordering to ensure proper fitment, especially for body panels, electrical components, and emission-related parts.

Are aftermarket bumpers as durable as OEM Kenworth bumpers, and what materials should I look for?

Quality aftermarket bumpers can match or exceed OEM durability when made from the right materials. Look for bumpers constructed from 16-gauge steel or thicker, with proper chrome plating or powder coating. Stainless steel options offer superior corrosion resistance. Avoid bumpers made from thin gauge steel (18-20 gauge) as they tend to bend easily and show wear quickly. Chrome should be triple-plated for longevity, and welds should be continuous rather than spot-welded.

What tools and skills are needed to install T660 bumpers and body parts myself?

Basic bumper installation requires a socket set (typically 3/4" and 7/8"), torque wrench, and potentially a helper due to weight. Most bumpers weigh 80-150 pounds. You'll need to disconnect fog lights and any sensors. Installation typically takes 2-4 hours. For hood and fender replacements, add panel alignment tools and expect 4-6 hours. If your truck has collision avoidance sensors or adaptive cruise control, professional calibration may be required after installation.

What's the difference between chrome, stainless steel, and painted finish options for T660 parts?

Chrome bumpers offer the classic shiny appearance but require regular polishing and can pit in harsh climates. Stainless steel provides excellent corrosion resistance with less maintenance but costs 20-30% more. Painted finishes are the most economical and can be color-matched to your truck, but may chip and require touch-ups. For winter operations or coastal areas, stainless steel offers the best long-term value despite higher initial cost.

How do I identify the correct replacement parts for my specific T660 configuration?

Start with your OEM number to determine exact model year and factory specifications. Key variations include standard vs. extended hood, day cab vs. sleeper configuration, and whether you have the aerodynamic package. Bumper widths vary from 18" to 20" depending on these factors. Check for additional features like fog light cutouts, tow hook provisions, and sensor mounting points. When ordering electrical components like headlights, verify if you have the multiplexed electrical system (common in 2013+ models).


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