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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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  • BESTfit 5 to 4 Inch ID/ ID Rubber Reducer Hose for Air Intake

    BESTfit 5 to 4 Inch ID/ ID Rubber Reducer Hose for Air Intake

    BESTFIT TRUCK PARTS

    $77.64
    Engine Air Intake Hose Adapter - Reducer* High Quality Hose* Rubber* 5 Inch ID To 4 Inch Id* Made In USA* Sold Individually* Warranty On Hoses Against Defects In Workmanship & Material From Date Of...
    GR-RHH-5-4
    SKU:
    GR-RHH-5-4
    Product Type:
    Exhaust
    Diameter Options:
    5 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    $77.64
    Qty in Cart: 0
    Price:
    $77.64
    Subtotal:
  • BESTfit 5 OD X 46.75 Inch Chrome 45 Degree Exhaust Stack For Dump Truck

    BESTfit 5 OD X 46.75 Inch Chrome 45 Degree Exhaust Stack For Dump Truck

    BESTFIT TRUCK PARTS

    $459.99
    5 Inch OD Chrome Dump Stack* High Quality Dump Stack* Chrome-Plated Steel* Dimensions:  - 5 Inch OD  - 46.75 Inch Overall Height* 45 Degree Multi Bend* Made In USA* Sold Individually* Warranty On...
    GR-FEC-5KC
    SKU:
    GR-FEC-5KC
    Product Type:
    Exhaust
    Degree Options:
    45
    Finish Options:
    Chrome-Plated
    Height Options:
    47 Inch
    Diameter Options:
    5 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    $459.99
    Qty in Cart: 0
    Price:
    $459.99
    Subtotal:
  • Oil Feed Line Replaces 2072805 For Caterpillar Turbocharger

    Oil Feed Line Replaces 2072805 For Caterpillar Turbocharger

    FULL TILT PERFORMANCE

    $262.64
    Caterpillar Turbocharger Oil Feed Line* High Quality Feed Line* Made In USA* Sold Individually* Warranty On Feed Lines Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    FLT-41015
    SKU:
    FLT-41015
    Product Type:
    Engine Parts
    Location:
    Made In USA
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $262.64
    Qty in Cart: 0
    Price:
    $262.64
    Subtotal:
  • Stainless Steel Exhaust Manifold Spacers For Cummins ISX Engine

    Stainless Steel Exhaust Manifold Spacers For Cummins ISX Engine

    FULL TILT PERFORMANCE

    $262.64
    Cummins ISX Exhaust Manifold SpacersThese stainless steel exhaust manifold spacers are designed specifically for Cummins engines. Made in the USA from corrosion-resistant material, they deliver...
    FLT-36100
    SKU:
    FLT-36100
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $262.64
    Qty in Cart: 0
    Price:
    $262.64
    Subtotal:
  • 15 Inch Bright Gold Metallic Chrome Shop Mafia Decal

    15 Inch Bright Gold Metallic Chrome Shop Mafia Decal

    CHROME SHOP MAFIA

    $11.00
    Replacement 15 Inch Bright Gold Metallic Chrome Shop Mafia Decal* High Quality Decal* 15 Inch * Gold Metallic * Sold Individually* Warranty On Decals Against Defects In Workmanship & Material From...
    CSMD095BGM
    SKU:
    CSMD095BGM
    Product Type:
    Apparel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.00
    Qty in Cart: 0
    Price:
    $11.00
    Subtotal:
  • On Sale
    Limited Quantity Available
    Monroe Magnum 70 Shock Absorber 74424

    Monroe Magnum 70 Shock Absorber 74424

    OPP - ORIGINAL PARTS PROGRAM

    Now: $20.34
    Was: $57.79
    Replacement Shock Absorber* High Quality Shock Absorber * Dimensions  - 16.98 Inch Compressed Length  - 26.2 Inch Expanded Length  - 9.22 Inch Travel * PTFE Coating * 1 3/4 Inch Bore * 10 Stage Valve...
    74424
    SKU:
    74424
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    Length Options:
    26 Inch
    Make:
    Universal Items
    Now: $20.34
    Was: $57.79
    Qty in Cart: 0
    Price:
    Now: $20.34
    Was: $57.79
    Subtotal:
  • White Chrome Shop Mafia Logo Pen

    White Chrome Shop Mafia Logo Pen

    CHROME SHOP MAFIA

    $3.29
    Chrome Shop Mafia Signature PenLove the feel of gel pens but hate the smudging? This Chrome Shop Mafia white logo pen gives you the best of both worlds - smooth-flowing ink that won't smear, all...
    CSMPEN02
    SKU:
    CSMPEN02
    Product Type:
    Apparel
    Ready To Ship:
    Yes
    Color:
    White
    Make:
    Universal Items
    $3.29
    Qty in Cart: 0
    Price:
    $3.29
    Subtotal:
  • AC Refrigerant Oil PAG 150UV - 8 OZ For R-134a Systems

    AC Refrigerant Oil PAG 150UV - 8 OZ For R-134a Systems

    JOHNSEN'S

    $11.43
    Premium AC Refrigerant Oil With UV Dye - Easy Leak DetectionThis PAG 150 oil works with R134a A/C systems. It helps keep all the moving parts working smoothly while protecting your system from...
    6822UV
    SKU:
    6822UV
    Product Type:
    Engine Parts
    Height Options:
    7 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.43
    Qty in Cart: 0
    Price:
    $11.43
    Subtotal:
  • Brushed SS Coffee Table With Truck Logo

    Brushed SS Coffee Table With Truck Logo

    CHROME SHOP MAFIA

    $455.99
    Coffee Table With Truck Logo* High Quality Coffee Table* Made Of Stainless Steel* Brushed Finish* Durable and Corrosion Resistant* Laser-Cut Truck Logo Design On Each End* Dimensions:  - 48 Inch...
    CSM00209
    SKU:
    CSM00209
    Product Type:
    Apparel
    Height Options:
    18 Inch
    Length Options:
    48 Inch
    Finish Options:
    Brushed
    Location:
    Made In USA
    Width Options:
    24 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $455.99
    Qty in Cart: 0
    Price:
    $455.99
    Subtotal:
  • Brushed SS End Table With Truck Logo And Tinted Plexiglass Insert

    Brushed SS End Table With Truck Logo And Tinted Plexiglass Insert

    CHROME SHOP MAFIA

    $535.99
    End Table With Truck Logo And Tinted Plexiglass Insert* High Quality End Table* Brushed Stainless Steel* Tinted Plexiglass Insert* 24 Inch Length* 24 Inch Width* 18 Inch Height* Made In USA* Sold...
    CSM00208
    SKU:
    CSM00208
    Product Type:
    Apparel
    Finish Options:
    Brushed
    Width Options:
    24 Inch
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Length Options:
    24 Inch
    Height Options:
    18 Inch
    Make:
    Universal Items
    $535.99
    Qty in Cart: 0
    Price:
    $535.99
    Subtotal:
  • 1/2 Inch Brass Street Elbow- 45 Degree

    1/2 Inch Brass Street Elbow- 45 Degree

    PARTS DISTRIBUTING

    $14.11
    Replacement 1/2 Inch Brass Street Elbow- 45 Degree* High Quality Street Elbow* Brass* 1/2 Inch * 45 Degree* Sold Individually * Warranty On Street Elbows Against Defects In Workmanship & Material...
    BP1248
    SKU:
    BP1248
    Length Options:
    1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Degree Options:
    45
    Style Options:
    Elbow
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $14.11
    Qty in Cart: 0
    Price:
    $14.11
    Subtotal:
  • Bostrom Truck Seat 900/700 Suspension Hardware Kit

    Bostrom Truck Seat 900/700 Suspension Hardware Kit

    BOSTROM TRUCK SEATS

    $36.39
    Replacement Suspension Hardware Kit for Bostrom 900/700 SeatThis suspension hardware kit fits Bostrom 700 and 900 series seats. The kit includes brackets, pins, bushings, and fasteners for seat...
    6222076001
    SKU:
    6222076001
    Product Type:
    Seats
    Position:
    Kit Full
    Make:
    Universal Items
    $36.39
    Qty in Cart: 0
    Price:
    $36.39
    Subtotal:
  • 1/2 Inch Brass Pipe Coupling

    1/2 Inch Brass Pipe Coupling

    PARTS DISTRIBUTING

    $6.51
    Replacement 1/2 Inch Hex Nipple Brass Pipe FittingThis durable brass coupling creates secure, leak-free connections in 1/2 inch pipes. It handles vibration well, works in low to medium pressure...
    BP1038
    SKU:
    BP1038
    Product Type:
    Air, Electrical, & Safety
    Length Options:
    1/2 Inch
    Material Options:
    Brass
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $6.51
    Qty in Cart: 0
    Price:
    $6.51
    Subtotal:
  • ProRide Truck Seat Low Profile Mid Back With Armrest, Black And Gray 2 Tone Ultra Leather

    ProRide Truck Seat Low Profile Mid Back With Armrest, Black And Gray 2 Tone Ultra Leather

    BOSTROM TRUCK SEATS

    $1,390.99
    ProRide Truck Seat Low Profile Mid Back With Armrest* High Quality Seat* Ultraleather* 2 Tone* Black And Gray * Low Profile* Mid Back* With Armrests* Sold Individually* Warranty On Seats Against...
    8230001L77
    SKU:
    8230001L77
    Material Options:
    Ultra Leather
    Style Options:
    Mid Back
    Product Type:
    Seats
    Make:
    Universal Items
    $1,390.99
    Qty in Cart: 0
    Price:
    $1,390.99
    Subtotal:
  • ProRide Truck Seat Standard Base High Back, Driver Swivel With Dual Armrests, Air Lumbar Bellow

    ProRide Truck Seat Standard Base High Back, Driver Swivel With Dual Armrests, Air Lumbar Bellow

    BOSTROM TRUCK SEATS

    $2,064.99
    ProRide Standard Base High Back Truck Seat With Driver Side Swivel* High Quality Seat* Titan Cloth* Black* Standard Base * High Back * With Dual Arm Rest * Air Lumbar * Bellow Suspension Cover *...
    9320029K85
    SKU:
    9320029K85
    Color:
    Black
    Material Options:
    Cloth
    Position:
    Driver Side
    Style Options:
    High Back
    Type Options:
    Standard Base
    Product Type:
    Seats
    Make:
    Universal Items
    $2,064.99
    Qty in Cart: 0
    Price:
    $2,064.99
    Subtotal:
  • Captain Lo Truck Seat With Dual Armrest, Manual Pump, Gray Cloth

    Captain Lo Truck Seat With Dual Armrest, Manual Pump, Gray Cloth

    NATIONAL SEATING

    $1,111.99
    Captain Lo Truck Seat* High Quality Seat* Cloth* Gray * Captain Lo Seat * With Dual Armrests * Manual Pump* Sold Individually* Warranty On Seats Against Defects In Workmanship & Material From Date Of...
    71124361L
    SKU:
    71124361L
    Color:
    Gray
    Material Options:
    Cloth
    Product Type:
    Seats
    Make:
    Universal Items
    $1,111.99
    Qty in Cart: 0
    Price:
    $1,111.99
    Subtotal:
  • Unitized Spindle Nut 3-1/4 Inch-12 Thread 614973, 4494973

    Unitized Spindle Nut 3-1/4 Inch-12 Thread 614973, 4494973

    AFTERMARKET

    $69.99
    Replacement Drive Axle Unitized Spindle Nut* High Quality Unitized Spindle Nut* Dimensions:  - Thread- 3-1/4 Inch-12  - W.A.F.- 4.375 Inch  - Thickness- 1.00 Inch* Made In USA* Sold Individually*...
    29-20200035
    SKU:
    29-20200035
    Product Type:
    Wheels
    Make:
    Universal Items
    $69.99
    Qty in Cart: 0
    Price:
    $69.99
    Subtotal:
  • STP Oil Treatment 15 Oz

    STP Oil Treatment 15 Oz

    AFTERMARKET

    $5.19
    Anti-Wear Agent With Viscosity Improver* High Quality Oil Treatment* 15 Ounce* Helps Protect Against Engine Wear* High Viscosity* Sold Individually* Warranty On Oil Treatments Against Defects In...
    65148
    SKU:
    65148
    Height Options:
    8 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $5.19
    Qty in Cart: 0
    Price:
    $5.19
    Subtotal:
  • Front Steer Axle Hub Cap HF682K

    Front Steer Axle Hub Cap HF682K

    AFTERMARKET

    $797.99
    Replacement Front Steer Axle Hub Cap* High Quality Steer Hub* Dimensions:  - Overall Height- 7.47 Inch  - Distance Between Cups- 3.02 Inch  - Bolt Circle Diameter- 11.25 Inch* Ball Seat Mount* Hub-...
    29-20200009
    SKU:
    29-20200009
    Product Type:
    Wheels
    Make:
    Universal Items
    $797.99
    Qty in Cart: 0
    Price:
    $797.99
    Subtotal:
  • Black Poly Quarter Fenders - Pair

    Black Poly Quarter Fenders - Pair

    MERRITT

    $142.99
    Black Poly Quarter Fenders* High Quality Quarter Fenders* Made Of Poly* Black* Thick And Tough For Incredible Durability And Long Life* Rust Proof, Chip, Dent And Scuff Resistant* Low Maintenance *...
    50602
    SKU:
    50602
    Location:
    Made In USA
    Color:
    Black
    Material Options:
    Plastic/Poly
    Height Options:
    9 Inch
    Product Type:
    Rear Fenders
    Length Options:
    29 Inch
    Width Options:
    23 Inch
    Make:
    Universal Items
    $142.99
    Qty in Cart: 0
    Price:
    $142.99
    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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