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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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    Lithium-Ion Jump Starter 12/24 Volts

    Lithium-Ion Jump Starter 12/24 Volts

    AUTOMANN USA

    $632.99
    12/24 V. Portable Jump StarterGet back on the road faster with the Lithium-Ion Jump Starter, engineered for heavy-duty commercial and fleet truck use. This high-quality portable jump starter delivers...
    09-21010000
    SKU:
    09-21010000
    Product Type:
    Tools
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $632.99
    Qty in Cart: 0
    Price:
    $632.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit Replaces 043028, 2121300002 For Cummins

    BESTfit DEF Doser Injector Kit Replaces 043028, 2121300002 For Cummins

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Replaces 043028, 2121300002 Fits CumminsKeep emissions systems performing efficiently with the BESTfit DEF Doser Injector Kit, a direct replacement...
    09-06070004
    SKU:
    09-06070004
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit DEF Filter Replaces 37332, 5002862, AP65142

    BESTfit DEF Filter Replaces 37332, 5002862, AP65142

    BESTFIT TRUCK PARTS

    $144.99
    Diesel Exhaust Fluid Filter By BESTfitKeep your DEF system operating cleanly and efficiently with the BESTfit DEF Filter, designed as a replacement for 37332, 5002862, and AP65142 in heavy-duty...
    09-06070001
    SKU:
    09-06070001
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit For Cummins Replaces 043027, 2121300003, 321353

    BESTfit DEF Doser Injector Kit For Cummins Replaces 043027, 2121300003, 321353

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Replaces 043027, 2121300003, 321353 Fits CumminsMaintain accurate emissions dosing with the BESTfit DEF Doser Injector Kit, replacing 043027,...
    09-06070002
    SKU:
    09-06070002
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit DEF Doser Injector Kit Replaces 2121300001 For Cummins

    BESTfit DEF Doser Injector Kit Replaces 2121300001 For Cummins

    BESTFIT TRUCK PARTS

    $131.99
    Diesel Exhaust Fluid Doser Injector Kit By BESTfit Fits CumminsDepend on strong emissions system performance with the BESTfit DEF Doser Injector Kit, a replacement for 2121300001. Designed for...
    09-06070003
    SKU:
    09-06070003
    Position:
    Kit Full
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • BESTfit Plastic Aluminum Radiator 38.9375 X 34.125 X 1.625 Inch 1 Row Replaces 3818108, HK179100,TR7565P For Kenworth

    BESTfit Plastic Aluminum Radiator 38.9375 X 34.125 X 1.625 Inch 1 Row Replaces 3818108, HK179100,TR7565P For Kenworth

    BESTFIT TRUCK PARTS

    $973.99
    Radiator W/ 2.5 Inch Inlet & 2.5 Inch Outlet By BESTfit Replaces 3818108, HK179100,TR7565PMaintain optimal engine temperature and performance with the BESTfit Plastic/Aluminum Radiator for Kenworth...
    02-07020027
    SKU:
    02-07020027
    Material Options:
    Plastic/Poly
    Width Options:
    40 Inch
    Product Type:
    Engine Parts
    Height Options:
    34 Inch
    Make:
    Kenworth
    $973.99
    Qty in Cart: 0
    Price:
    $973.99
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Paccar MX-13

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Paccar MX-13

    BULLY DOG

    $5,000.00
    Choose Option(s) to see description.Fitment** Fits Models W/ PACCAR MX-13 Engines 2010-2013Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator Replaces 5355091 For Paccar MX-13Paccar MX-13 Stage 1 VGT...
    PPR_300802
    SKU:
    PPR_300802
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    Style Options:
    Paccar
    Make:
    Universal Items
    Make:
    Other - Semi-Truck
    $5,000.00
    Qty in Cart: 0
    Price:
    $5,000.00
    Subtotal:
  • Bully Dog Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins X15 CM2350 & CM2450

    Bully Dog Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins X15 CM2350 & CM2450

    BULLY DOG

    $6,000.00
    Experience more responsive power and improved engine efficiency with this Stage 1 Billet Wheel VGT Turbo Charger with Actuator, designed for Cummins X15 Low or High HP engines and replacing 5459710...
    PPR_300798
    SKU:
    PPR_300798
    Material Options:
    Billet Aluminum
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $6,000.00
    Qty in Cart: 0
    Price:
    $6,000.00
    Subtotal:
  • Limited Quantity Available
    BESTfit A/C O- Ring Kit For Early Or Late Model Applications

    BESTfit A/C O- Ring Kit For Early Or Late Model Applications

    BESTFIT TRUCK PARTS

    $4.99 - $14.99
    Ensure a secure, leak-free seal in your air conditioning system with the BESTfit A/C O-Ring Kit for early or late model applications. This high-quality kit is made from durable EPDM material,...
    PPR_300804
    SKU:
    PPR_300804
    Color:
    Green
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $4.99 - $14.99
    Qty in Cart: 0
    Price:
    $4.99 - $14.99
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX15, X15 & QSX

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX15, X15 & QSX

    BULLY DOG

    $4,750.00
    If your goal is smoother boost and reduced turbo lag, this Stage 1 VGT Turbo Charger offers a refined upgrade path. Featuring a billet aluminum compressor wheel and upgraded diffuser plates, the...
    PPR_300797
    SKU:
    PPR_300797
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Material Options:
    Billet Aluminum
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,750.00
    Qty in Cart: 0
    Price:
    $4,750.00
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX 871

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISX 871

    BULLY DOG

    $4,750.00
    Maximize torque, efficiency, and reliability with the Stage 1 Billet Wheel VGT Turbo Charger with Actuator, replacing 3774613/2881993/4309078 for Cummins ISX 871 engines. The aluminum billet...
    PPR_300799
    SKU:
    PPR_300799
    Material Options:
    Billet Aluminum
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,750.00
    Qty in Cart: 0
    Price:
    $4,750.00
    Subtotal:
  • Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISB 6.7L

    Stage 1 Billet Wheel VGT Turbo Charger W/ Actuator For Cummins ISB 6.7L

    BULLY DOG

    $4,398.00
    Boost your Cummins ISB 6.7L performance with the Stage 1 Billet Wheel VGT Turbo Charger with Actuator, a direct replacement for 3789505/6411490/6411519. Its aluminum billet wheel, Cobalt VGT cage,...
    PPR_300800
    SKU:
    PPR_300800
    Product Type:
    Engine Parts
    Material Options:
    Billet Aluminum
    Style Options:
    Cummins
    Make:
    Other - Semi-Truck
    Make:
    Universal Items
    $4,398.00
    Qty in Cart: 0
    Price:
    $4,398.00
    Subtotal:
  • Load- Share Steer Axle Ride Kit Fits 3.5 Or 4 Inch Leaf Spring With Square Top U-Bolts & Standard U-Bolt Spacing

    Load- Share Steer Axle Ride Kit Fits 3.5 Or 4 Inch Leaf Spring With Square Top U-Bolts & Standard U-Bolt Spacing

    LOAD-SHARE SUSPENSIONS

    $1,085.99 - $1,252.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models of TrucksLoad- Share Steer Axle Ride Kit Fits 3.5 Inch Leaf-Spring With Square-Top U-Bolts & Standard U-Bolt...
    PPR_300796
    SKU:
    PPR_300796
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $1,085.99 - $1,252.99
    Qty in Cart: 0
    Price:
    $1,085.99 - $1,252.99
    Subtotal:
  • 304 SS Quarter Fender Bracket For Peterbilt Low Air & Kenworth AG400L Suspension

    304 SS Quarter Fender Bracket For Peterbilt Low Air & Kenworth AG400L Suspension

    HOGEBUILT FENDERS

    $455.99
    Choose Option(s) to see description.Fitment* Fits Kenworth C500 2005 thru Current* Fits Kenworth K260 2007 thru 2012* Fits Kenworth K360 2007 thru 2012* Fits Kenworth K270 2013 thru Current* Fits...
    PPR_300784
    SKU:
    PPR_300784
    Material Options:
    Stainless Steel
    Position:
    Driver Side
    Product Type:
    Rear Fenders
    Truck Class:
    Heavy Duty
    Position:
    Passenger Side
    Make:
    Kenworth
    Make:
    Peterbilt
    $455.99
    Qty in Cart: 0
    Price:
    $455.99
    Subtotal:
  • Rectangular Dome Light Lens For Kenworth & Peterbilt 359

    Rectangular Dome Light Lens For Kenworth & Peterbilt 359

    GRAND GENERAL

    $2.68 - $2.80
    Choose Option(s) to see description.Fitment* Fits Kenworth Cabover 1961 thru 2002* Fits Kenworth K100 1963 thru 1967* Fits Kenworth K100C 1968 thru 1983* Fits Kenworth K100E 1984 thru 2002* Fits...
    PPR_300789
    SKU:
    PPR_300789
    Color:
    Blue
    Color:
    Purple
    Color:
    Green
    Truck Class:
    Heavy Duty
    Product Type:
    Interior
    Make:
    Kenworth
    Make:
    Peterbilt
    $2.68 - $2.80
    Qty in Cart: 0
    Price:
    $2.68 - $2.80
    Subtotal:
  • FREE SHIPPING OVER $249
    Steel Fender Rear Mounting Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    Steel Fender Rear Mounting Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    SHIFT PRODUCTS

    $149.99
    This steel fender bracket is made for installing the fender on either the driver side or passenger side of Peterbilt Low Airleaf trucks from 2005 and newer, as well as Kenworth trucks with AG400L...
    PPR_300780
    SKU:
    PPR_300780
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Position:
    Driver Side
    Position:
    Passenger Side
    Product Type:
    Rear Fenders
    Make:
    Kenworth
    Make:
    Peterbilt
    $149.99
    Qty in Cart: 0
    Price:
    $149.99
    Subtotal:
  • Driver/Passenger Side Steel Half Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension

    Driver/Passenger Side Steel Half Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension

    SHIFT PRODUCTS

    $170.99
    This half fender bracket is designed for secure mounting of fiberglass fenders on Peterbilt trucks with Low Airleaf suspension (2005 and newer) and Kenworth trucks with AG400L suspension. Made for...
    PPR_300783
    SKU:
    PPR_300783
    Position:
    Driver Side
    Position:
    Passenger Side
    Product Type:
    Rear Fenders
    Material Options:
    Steel
    Type Options:
    Half
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    $170.99
    Qty in Cart: 0
    Price:
    $170.99
    Subtotal:
  • Stainless Steel Rear Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    Stainless Steel Rear Fender Bracket For Peterbilt Low Airleaf & Kenworth Ag400L Suspension 2005 & Newer

    SHIFT PRODUCTS

    $155.99 - $162.99
    Choose Option(s) to see description.Fitment* Fits Kenworth T2000 2005 thru 2010* Fits Kenworth T300 2005 thru 2007* Fits Kenworth T370 2009 thru 2021* Fits Kenworth T600 Aerocab 2005 thru 2007* Fits...
    PPR_300781
    SKU:
    PPR_300781
    Material Options:
    Steel
    Product Type:
    Rear Fenders
    Truck Class:
    Heavy Duty
    Position:
    Driver Side
    Position:
    Passenger Side
    Make:
    Kenworth
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $155.99 - $162.99
    Qty in Cart: 0
    Price:
    $155.99 - $162.99
    Subtotal:
  • Stainless Steel Fender Bracket Driver/Passenger Option For Peterbilt Flex Air And Kenworth Ag380 Suspension

    Stainless Steel Fender Bracket Driver/Passenger Option For Peterbilt Flex Air And Kenworth Ag380 Suspension

    SHIFT PRODUCTS

    $162.99 - $177.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 330 2002 thru 2005* Fits Peterbilt 335 2005 thru 2010* Fits Peterbilt 337 2014 thru 2022* Fits Peterbilt 340 2007 thru 2010* Fits Peterbilt...
    PPR_300782
    SKU:
    PPR_300782
    Material Options:
    Steel
    Position:
    Passenger Side
    Truck Class:
    Heavy Duty
    Product Type:
    Rear Fenders
    Position:
    Driver Side
    Make:
    Kenworth
    Make:
    Peterbilt
    $162.99 - $177.99
    Qty in Cart: 0
    Price:
    $162.99 - $177.99
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Limited Quantity Available
    Legendary Underboss Large Glass Watermelon 4 Wire Dual Function W/ Stainless Bezel LED Light - Each

    Legendary Underboss Large Glass Watermelon 4 Wire Dual Function W/ Stainless Bezel LED Light - Each

    LEGENDARY

    Now: $42.49
    Was: $49.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksLegendary Underboss Large Glass Watermelon Amber-Blue-Clear 4 Wire Dual Function W/ Stainless Bezel LED...
    PPR_300765
    SKU:
    PPR_300765
    Color:
    Amber/Green
    Color:
    Red/Blue
    Diameter Options:
    3 1/2 Inch
    Style Options:
    Watermelon
    Color:
    Amber/Blue
    Color:
    Amber/White
    Color:
    Amber/Red
    Color:
    Red/White
    Color:
    Red/Purple
    Position:
    Under
    Color:
    Amber/Purple
    Color:
    Red/Green
    Material Options:
    Glass
    Make:
    Universal Items
    Make:
    Dodge
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    Now: $42.49
    Was: $49.99
    Qty in Cart: 0
    Price:
    Now: $42.49
    Was: $49.99
    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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