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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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  • Quantity
  • Price
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  • 8 X 108 Inch Chrome West Coast Turn Exhaust Stack By BESTfit

    8 X 108 Inch Chrome West Coast Turn Exhaust Stack By BESTfit

    BESTFIT TRUCK PARTS

    $1,094.99
    BESTfit 8 X 108 Inch West Coast Turn Exhaust Stack* High Quality Exhaust Stack* West Coast Turn* Chrome-Plated Steel* 8 Inch Outer Diameter* 108 Inch Height* Sold Individually* Warranty On Exhaust...
    09-088010809
    SKU:
    09-088010809
    Product Type:
    Exhaust
    Diameter Options:
    8 Inch
    Style Options:
    West Coast Turn
    Height Options:
    108 Inch
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Make:
    Universal Items
    $1,094.99
    Qty in Cart: 0
    Price:
    $1,094.99
    Subtotal:
  • 6 X 16 Inch Aluminum West Coast Mirror- Yellow Chevron Embossed Back

    6 X 16 Inch Aluminum West Coast Mirror- Yellow Chevron Embossed Back

    LUVERNE

    $53.99
    6 X 16 Inch Flange Mount West Coast Mirror- Yellow Chevron Embossed Back* High Quality Mirror Head* West Coast Style* Waterproof LED Rocker Switch* Yellow Chevron* Non-Glare Glass* Anodized Aluminum*...
    09-09150021
    SKU:
    09-09150021
    Product Type:
    Exterior
    Width Options:
    6 Inch
    Height Options:
    16 Inch
    Material Options:
    Aluminum
    Style Options:
    West Coast Style
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • 7 X 16 Inch Stainless Steel West Coast Mirror- Heated

    7 X 16 Inch Stainless Steel West Coast Mirror- Heated

    LUVERNE

    $276.99
    7 X 16 Inch Motorized West Coast Mirror* High Quality Mirror Head* West Coast Style* Motorized West Coast Single Vision Mirror Heads* Heated* 4-Way Actuators - Common Components* Vertical And...
    09-09150045
    SKU:
    09-09150045
    Product Type:
    Exterior
    Finish Options:
    Polished
    Style Options:
    West Coast Style
    Type Options:
    Heated
    Height Options:
    16 Inch
    Width Options:
    7 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $276.99
    Qty in Cart: 0
    Price:
    $276.99
    Subtotal:
  • 6-5 X 48 Inch Chrome West Coast Turn Exhaust Stack By BESTfit

    6-5 X 48 Inch Chrome West Coast Turn Exhaust Stack By BESTfit

    BESTFIT TRUCK PARTS

    $373.99
    BESTfit 6-5 X 48 Inch West Coast Turn Exhaust Stack* High Quality Exhaust Stack* West Coast * Chrome* 6 Inch Outer Diameter Reduces To 5 Inch Outer Diameter* 48 Inch Height* Sold Individually*...
    09-086536082
    SKU:
    09-086536082
    Product Type:
    Exhaust
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Height Options:
    48 Inch
    Style Options:
    West Coast Turn
    Diameter Options:
    6 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $373.99
    Qty in Cart: 0
    Price:
    $373.99
    Subtotal:
  • 7 X 52 Inch Chrome Plated Stainless Steel Exhaust Spool

    7 X 52 Inch Chrome Plated Stainless Steel Exhaust Spool

    LINCOLN CHROME

    $529.99
    7 X 52 Inch Exhaust Spool* High Quality Exhaust Spool* Has Tapered Top To Match OD Stack And On Inlet End* Chrome Plated Stainless Steel* Dimensions:  - 7 Inch OD  - 52 Inch Height* Sold...
    09-082705236
    SKU:
    09-082705236
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Product Type:
    Exhaust
    Height Options:
    52 Inch
    Diameter Options:
    7 Inch
    Location:
    Made In USA
    Style Options:
    Tapered
    Make:
    Universal Items
    $529.99
    Qty in Cart: 0
    Price:
    $529.99
    Subtotal:
  • 7-5 X 48 Inch Chrome Short 30 Turn Exhaust Stack

    7-5 X 48 Inch Chrome Short 30 Turn Exhaust Stack

    LINCOLN CHROME

    $446.99
    7-5 OD X 48 Inch Short 30 Turn Exhaust Stack* High Quality Exhaust Stack* Plain End* Short 30 Top* Chrome Plated Stainless Steel* 48 Inch Length* 7 Inch To 5 Inch Outer Diameter* Sold Individually*...
    09-08704806
    SKU:
    09-08704806
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Style Options:
    Short 30 Turn
    Location:
    Made In USA
    Height Options:
    48 Inch
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Diameter Options:
    7 To 5 Inch
    $446.99
    Qty in Cart: 0
    Price:
    $446.99
    Subtotal:
  • 5 to 4 X 8 Inch Aluminized Steel Turbo Adapter

    5 to 4 X 8 Inch Aluminized Steel Turbo Adapter

    BESTFIT TRUCK PARTS

    $69.03
    5 to 4 X 8 Inch Turbo Adapter* High Quality Exhaust Pipe Reducer* Turbo/Manifold Adapter* Made Of Aluminized Steel* Dimensions:  - 8 Inch Length  - 4 Inch Inner Diameter  - 5 Inch Outer Diameter To 5...
    09-08011443
    SKU:
    09-08011443
    Product Type:
    Exhaust
    Diameter Options:
    5 Inch
    Length Options:
    8 Inch
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    $69.03
    Qty in Cart: 0
    Price:
    $69.03
    Subtotal:
  • 7-5 X 36 Inch Chrome Bull Hauler Exhaust Stack

    7-5 X 36 Inch Chrome Bull Hauler Exhaust Stack

    LINCOLN CHROME

    $460.99
    7-5 OD X 36 Inch Bull Hauler Exhaust Stack* High Quality Exhaust Stack* Bullhorn Top Style* Expanded And Slotted End* Chrome Plated Finish* 36 Inch Height* 7 Inch Reduced To 5 Inch Inner Diameter*...
    09-08010981
    SKU:
    09-08010981
    Finish Options:
    Chrome-Plated
    Height Options:
    36 Inch
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Universal Items
    Material Options:
    Steel
    Style Options:
    Bullhorn Top Style
    $460.99
    Qty in Cart: 0
    Price:
    $460.99
    Subtotal:
  • 6-5 X 36 Inch Chrome Curve Turn Exhaust Stack

    6-5 X 36 Inch Chrome Curve Turn Exhaust Stack

    TRUX ACCESSORIES

    $188.99
    6-5 OD X 36 Inch Curve Turn Exhaust Stack* High Quality Exhaust Stack* Curved Top Style* Plain End* Chrome Plated Steel* 36 Inch Height* 6 Inch Reduced To 5 Inch Outer Diameter* Sold Individually*...
    09-08011453
    SKU:
    09-08011453
    Height Options:
    36 Inch
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    Make:
    Universal Items
    Material Options:
    Steel
    Diameter Options:
    6 To 5 Inch
    $188.99
    Qty in Cart: 0
    Price:
    $188.99
    Subtotal:
  • 7-5 X 84 Chrome Miter Exhaust Stack

    7-5 X 84 Chrome Miter Exhaust Stack

    LINCOLN CHROME

    $716.99
    7-5 OD X 84 Miter Exhaust Stack* High Quality Exhaust Stack* Miter Top Style* Plain End* Chrome Plated Finish* 84 Inch Length* 7 Inch Reduced To 5 Inch Outer Diameter* Sold Individually* Warranty On...
    09-08010755
    SKU:
    09-08010755
    Location:
    Made In USA
    Product Type:
    Exhaust
    Height Options:
    84 Inch
    Finish Options:
    Chrome-Plated
    Style Options:
    Miter Cut
    Make:
    Universal Items
    Material Options:
    Steel
    Diameter Options:
    7 To 5 Inch
    $716.99
    Qty in Cart: 0
    Price:
    $716.99
    Subtotal:
  • Lincoln Chrome 6 X 24 Inch Chrome Bull Hauler Exhaust Stack

    Lincoln Chrome 6 X 24 Inch Chrome Bull Hauler Exhaust Stack

    LINCOLN CHROME

    $277.99
    6 X 24 Inch Bull Hauler Exhaust Stack By Lincoln Chrome* High Quality Exhaust Stack* Bullhorn Top Style* Plain End* Chrome Plated Finish* 24 Inch Height* 6 Inch Inner Diameter* Sold Individually*...
    09-08010333
    SKU:
    09-08010333
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Diameter Options:
    6 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    Material Options:
    Steel
    Style Options:
    Bullhorn Top Style
    Height Options:
    24 Inch
    $277.99
    Qty in Cart: 0
    Price:
    $277.99
    Subtotal:
  • 7-5 X 60 Inch Chrome Bull Hauler Exhaust Stack

    7-5 X 60 Inch Chrome Bull Hauler Exhaust Stack

    LINCOLN CHROME

    $614.99
    7-5 OD X 60 Inch Bull Hauler Exhaust Stack* High Quality Exhaust Stack* Bullhorn Top Style* Plain End* Chrome Plated Finish* 60 Inch Height* 7 Inch Reduced To 5 Inch Outer Diameter* Sold...
    09-08010963
    SKU:
    09-08010963
    Finish Options:
    Chrome-Plated
    Style Options:
    Bull Hauler Turn
    Location:
    Made In USA
    Product Type:
    Exhaust
    Make:
    Universal Items
    Diameter Options:
    7 To 5 Inch
    Height Options:
    60 Inch
    Material Options:
    Steel
    $614.99
    Qty in Cart: 0
    Price:
    $614.99
    Subtotal:
  • 5 X 68 Inch Chrome West Coast Turn Exhaust Stack

    5 X 68 Inch Chrome West Coast Turn Exhaust Stack

    LINCOLN CHROME

    $398.99
    5 ID X 68 Inch West Coast Turn Exhaust Stack* High Quality Exhaust Stack* West Coast Curved Top Style* Expanded And Slotted End* Chrome Plated Finish* 68 Inch Height* 5 Inch Inner Diameter* Sold...
    09-08010341
    SKU:
    09-08010341
    Diameter Options:
    5 Inch
    Location:
    Made In USA
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Style Options:
    West Coast Turn
    Height Options:
    68 Inch
    Make:
    Universal Items
    Material Options:
    Steel
    $398.99
    Qty in Cart: 0
    Price:
    $398.99
    Subtotal:
  • 6 X 72 Inch Chrome West Coast Turn Exhaust Stack

    6 X 72 Inch Chrome West Coast Turn Exhaust Stack

    LINCOLN CHROME

    $623.99
    6 OD X 72 Inch West Coast Turn Exhaust Stack* High Quality Exhaust Stack* West Coast Curved Top Style* Plain End* Chrome Plated Finish* 72 Inch Length* 6 Inch Outer Diameter* Sold Individually*...
    09-08010160
    SKU:
    09-08010160
    Style Options:
    West Coast Turn
    Height Options:
    72 Inch
    Finish Options:
    Chrome-Plated
    Location:
    Made In USA
    Diameter Options:
    6 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    Material Options:
    Steel
    $623.99
    Qty in Cart: 0
    Price:
    $623.99
    Subtotal:
  • 2.75 X 2 Inch Aluminized Steel Turbo Adapter

    2.75 X 2 Inch Aluminized Steel Turbo Adapter

    BESTFIT TRUCK PARTS

    $39.26
    Aluminized Steel Turbo Adapter Use With V-Band Clamp* High Quality Turbo/Manifold Adapter* With 22 Degree Flare* Used With V-Band Clamp* Aluminum* 2.75 Inch Outer Diameter To A 3.21 Inch Flare* 2...
    09-0801003
    SKU:
    09-0801003
    Material Options:
    Aluminized Steel
    Product Type:
    Exhaust
    Make:
    Universal Items
    Diameter Options:
    2 3/4 Inch
    Style Options:
    Flanged
    $39.26
    Qty in Cart: 0
    Price:
    $39.26
    Subtotal:
  • 7 X 36 Inch Chrome Bull Hauler Exhaust Stack

    7 X 36 Inch Chrome Bull Hauler Exhaust Stack

    LINCOLN CHROME

    $429.99
    7 OD X 36 Inch Bull Hauler Exhaust Stack* High Quality Exhaust Stack* Bullhorn Top Style* Plain End* Chrome Plated Finish* 36 Inch Height* 7 Inch Outer Diameter* Sold Individually* Warranty On...
    09-08010255
    SKU:
    09-08010255
    Diameter Options:
    7 Inch
    Location:
    Made In USA
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Style Options:
    Bull Hauler Turn
    Height Options:
    36 Inch
    Make:
    Universal Items
    Material Options:
    Steel
    Ready To Ship:
    Yes
    $429.99
    Qty in Cart: 0
    Price:
    $429.99
    Subtotal:
  • 7-5 X 44 Inch Chrome Miter Exhaust Stack

    7-5 X 44 Inch Chrome Miter Exhaust Stack

    LINCOLN CHROME

    $389.99
    7-5 OD X 44 Inch Miter Exhaust Stack* High Quality Exhaust Stack* Miter Top Style* Plain End* Chrome Plated Finish* 44 Inch Height* 7 Inch Reduced To 5 Inch Outer Diameter* Sold Individually*...
    09-08010141
    SKU:
    09-08010141
    Location:
    Made In USA
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Style Options:
    Miter Cut
    Make:
    Universal Items
    Material Options:
    Steel
    Diameter Options:
    7 To 5 Inch
    Height Options:
    44 Inch
    $389.99
    Qty in Cart: 0
    Price:
    $389.99
    Subtotal:
  • Pilot Bearing Replaces 63052RSJ, PB63052RS

    Pilot Bearing Replaces 63052RSJ, PB63052RS

    AUTOMANN USA

    $17.81
    Nitrile Shields Pilot Bearing* High Quality Pilot Bearing* Nitrile Shields* 0.977 Inch Inner Diameter* 2.440 Inch Outer Diameter* 0.667 Inch Thick* Sold Individually* Warranty On Pilot Bearings...
    09-07050000
    SKU:
    09-07050000
    Diameter Options:
    2 1/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $17.81
    Qty in Cart: 0
    Price:
    $17.81
    Subtotal:
  • Single Check Valve Replaces Kn23040. N13526J

    Single Check Valve Replaces Kn23040. N13526J

    AUTOMANN USA

    $16.53
    2.32 X 0.75 Inch Single Check Valve* High Quality Single Check Valve* 3/4 Inch NPT Female Inlet* 3/4 Inch NPT Male Outlet* 2.320 Inch Length* Sold Individually* Warranty On Single Check Valves...
    09-07000002
    SKU:
    09-07000002
    Length Options:
    2 1/4 Inch
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Material Options:
    Brass
    $16.53
    Qty in Cart: 0
    Price:
    $16.53
    Subtotal:
  • Pinion Seal Replaces 25624339, 88AXB1, A1805A261

    Pinion Seal Replaces 25624339, 88AXB1, A1805A261

    AUTOMANN USA

    $12.70
    4.010 Inch OD X 0.438 Inch Width Pinion Seal With 2.75 Inch Shaft Diameter* High Quality Pinion Seal* 2.750 Inch Shaft Diameter* 4.010 Inch Outer Diameter* 0.438 Inch Width* Sold Individually*...
    09-05210011
    SKU:
    09-05210011
    Diameter Options:
    4 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $12.70
    Qty in Cart: 0
    Price:
    $12.70
    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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