null

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.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • On Sale
    Limited Quantity Available
    5.5 Inch Washer Fluid Pump Harness- 2 Pin

    5.5 Inch Washer Fluid Pump Harness- 2 Pin

    AUTOMANN USA

    Now: $4.04
    Was: $5.77
    Washer Fluid Pump Harness-- 5.5 InchMaintain a clean windshield and ensure maximum visibility with this 5.5 Inch Washer Fluid Pump Harness featuring a secure 2-pin connection. Designed for...
    09-0707003
    SKU:
    09-0707003
    Product Type:
    Engine Parts
    Length Options:
    5 1/2 Inch
    Style Options:
    2 Prong
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $4.04
    Was: $5.77
    Qty in Cart: 0
    Price:
    Now: $4.04
    Was: $5.77
    Subtotal:
  • CSM Black Aluminum Alloy Water Tank Cap

    CSM Black Aluminum Alloy Water Tank Cap

    CHROME SHOP MAFIA

    $16.47
    38MM Water Tank Cap By Chrome Shop MafiaSafeguard your truck's fluids with the Chrome Shop Mafia Black Aluminum Alloy Water Tank Cap. Constructed from heavy-duty aluminum alloy weld billet, it fits...
    09-0707002
    SKU:
    09-0707002
    Ready To Ship:
    Yes
    Color:
    Black
    Make:
    Universal Items
    Product Type:
    Fuel Tanks
    Material Options:
    Aluminum
    $16.47
    Qty in Cart: 0
    Price:
    $16.47
    Subtotal:
  • 18 Inch Chrome Round Bell Horn W/ Pedestal & Gaskets

    18 Inch Chrome Round Bell Horn W/ Pedestal & Gaskets

    OPP - ORIGINAL PARTS PROGRAM

    $327.99
    18 Inch Chrome Round Bell HornUpgrade your truck's sound system with this 18 Inch Chrome Round Bell Horn, built for truckers who demand loud, reliable, and professional-grade performance. Featuring a...
    09-051300126
    SKU:
    09-051300126
    Product Type:
    Frame & Chassis
    Diameter Options:
    6 Inch
    Length Options:
    18 Inch
    Finish Options:
    Chrome-Plated
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Material Options:
    Steel
    $327.99
    Qty in Cart: 0
    Price:
    $327.99
    Subtotal:
  • 28.25 Inch Chrome Plastic Air Horn- 115 DB Output

    28.25 Inch Chrome Plastic Air Horn- 115 DB Output

    AUTOMANN USA

    $87.99
    28.25 Inch Chrome Plastic Air HornCommand attention on the highway with the 28.25 Inch Chrome Plastic Air Horn, designed to produce a robust 115 DB sound that enhances safety for truck drivers. Its...
    09-051300125
    SKU:
    09-051300125
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Diameter Options:
    6 Inch
    Length Options:
    28 Inch
    Finish Options:
    Chrome-Plated
    Make:
    Universal Items
    $87.99
    Qty in Cart: 0
    Price:
    $87.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Brunner Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T Lights

    Brunner Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T Lights

    BRUNNER FABRICATION

    Now: $1,448.29
    Was: $2,068.99
    Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T LightsKeep your truck safe and highly visible with the Brunner Stainless Steel Upper...
    09-02100011
    SKU:
    09-02100011
    Product Type:
    Cargo Control
    Material Options:
    Stainless Steel
    Light Options:
    With Lights
    Color:
    Red/Clear
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $1,448.29
    Was: $2,068.99
    Qty in Cart: 0
    Price:
    Now: $1,448.29
    Was: $2,068.99
    Subtotal:
  • 3.5 X 48 Inch Stainless Steel Channel W/ 5 Supernova Light Holes

    3.5 X 48 Inch Stainless Steel Channel W/ 5 Supernova Light Holes

    ROADWORKS

    $65.99
    3.5 X 48 Inch Channel W/ 5 Supernova Light HolesBring both durability and style to your truck with this 3.5 x 48 Inch Stainless Steel Channel with 5 Supernova light holes. Constructed from...
    09-010600155
    SKU:
    09-010600155
    Light Options:
    Without Lights
    Location:
    Made In USA
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Length Options:
    48 Inch
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • 76 Inch Stainless Steel Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes

    76 Inch Stainless Steel Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes

    ICONIC

    $499.99
    76 Inch Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes For Flat RackBoost both safety and style with the 76 Inch Stainless Steel Light Bar. Designed for 76-inch flat racks, it includes six...
    09-0210013
    SKU:
    09-0210013
    Product Type:
    Cargo Control
    Length Options:
    76 Inch
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Make:
    Universal Items
    $499.99
    Qty in Cart: 0
    Price:
    $499.99
    Subtotal:
  • 8 Inch Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light Holes

    8 Inch Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light Holes

    ROADWORKS

    $203.99
    8 Inch 304 Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light HolesImprove your truck's rear performance and style with this 8 Inch Stainless Steel Rear Center Panel. Featuring five round...
    09-01110109
    SKU:
    09-01110109
    Light Options:
    Without Lights
    Product Type:
    Bumpers
    Location:
    Made In USA
    Height Options:
    8 Inch
    Position:
    Center
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Spring Loaded Hinge Cargo Bar Holder

    Spring Loaded Hinge Cargo Bar Holder

    AUTOMANN USA

    Now: $53.19
    Was: $75.99
    Cargo Bar Holder With Rubber InsertsSecure and organize your truck's cargo efficiently with this Spring Loaded Hinge Cargo Bar Holder. Built with a durable hinged design and equipped with rubber...
    09-020200092
    SKU:
    09-020200092
    Material Options:
    Plastic/Poly
    Product Type:
    Cargo Control
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $53.19
    Was: $75.99
    Qty in Cart: 0
    Price:
    Now: $53.19
    Was: $75.99
    Subtotal:
  • Stainless Steel Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights For Peterbilt 589

    Stainless Steel Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights For Peterbilt 589

    VALLEY CHROME PLATING

    $184.99
    Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights Fits Peterbilt 589Improve visibility and style on your Peterbilt 589 with these Stainless Steel Front Air Cleaner Light Panels, featuring...
    01-09051149
    SKU:
    01-09051149
    Product Type:
    Exterior
    Style Options:
    Watermelon
    Light Options:
    With Lights
    Location:
    Made In USA
    Color:
    Amber
    Material Options:
    Stainless Steel
    Size Options:
    18 Gauge
    Make:
    Universal Items
    $184.99
    Qty in Cart: 0
    Price:
    $184.99
    Subtotal:
  • Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern

    Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern

    ROCKWOOD

    $20.01
    304 Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern* High Quality Shift Pattern* For Eaton Fuller 10 Speed Overdrive (RTO)* 304 Stainless Steel* Sold Individually* Warranty On Shift...
    U20401
    SKU:
    U20401
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Make:
    Universal Items
    $20.01
    Qty in Cart: 0
    Price:
    $20.01
    Subtotal:
  • Electric Fan Shroud For Rigmaster Generator

    Electric Fan Shroud For Rigmaster Generator

    RIGMASTER

    $168.99
    Electric Fan Shroud* High Quality Electric Fan Shroud* For Rigmaster Generator* Sold Individually* Warranty On Electric Fan Shrouds Against Defects In Workmanship & Material From Date Of Purchase***...
    RP1000143
    SKU:
    RP1000143
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $168.99
    Qty in Cart: 0
    Price:
    $168.99
    Subtotal:
  • Radiator Mount Bushing For Rigmaster Generator

    Radiator Mount Bushing For Rigmaster Generator

    RIGMASTER

    $2.03
    Radiator Mount Bushing* High Quality Radiator Mount Bushing* For Rigmaster Generator* Sold Individually* Warranty On Radiator Mount Bushings Against Defects In Workmanship & Material From Date Of...
    RP12048
    SKU:
    RP12048
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern

    Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern

    ROCKWOOD

    $20.19
    304 Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern* High Quality Shift Pattern* For Eaton Fuller 15 Speed Overdrive (RTO)* 304 Stainless Steel* Sold Individually* Warranty On Shift...
    R20467
    SKU:
    R20467
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $20.19
    Qty in Cart: 0
    Price:
    $20.19
    Subtotal:
  • Generator Cover For Rigmaster Generator

    Generator Cover For Rigmaster Generator

    RIGMASTER

    $174.99
    Generator Cover* High Quality Generator Cover* For Rigmaster Generator* Sold Individually* Warranty On Generator Covers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    RP1000131
    SKU:
    RP1000131
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $174.99
    Qty in Cart: 0
    Price:
    $174.99
    Subtotal:
  • Tail Light Lens- Red For ST60 Series Lights

    Tail Light Lens- Red For ST60 Series Lights

    OPTRONICS

    $3.13
    Replacement Red Tail Light Lens* High Quality Lens* Replacement Tail Light Lens* For ST60 Series* Oblong Shape* Acrylic* Red* 6.5 Inch Wide* 5.5 Inch Height* 0.12 Inch Depth* Screw-On* Sold...
    PLA60RB
    SKU:
    PLA60RB
    Product Type:
    Lighting
    Color:
    Red
    Length Options:
    5 1/2 Inch
    Width Options:
    6 1/2 Inch
    Make:
    Universal Items
    Material Options:
    Acrylic
    $3.13
    Qty in Cart: 0
    Price:
    $3.13
    Subtotal:
  • Rectangular Red/ Clear Stop, Turn, Tail Light

    Rectangular Red/ Clear Stop, Turn, Tail Light

    OPTRONICS

    $37.93
    Rectangular Red/ Clear Stop, Turn, Tail Light- Grommet Mount* High Quality Stop/Turn/Tail Light* Rectangular* Clear Lens With Red Tinted Reflectors* Pl-3 Connection* 12-24 Volt* Grommet Mount*...
    PLSTL35CCR1224B
    SKU:
    PLSTL35CCR1224B
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Make:
    Universal Items
    Style Options:
    LED
    Shape Options:
    Rectangular
    Height Options:
    3 1/2 Inch
    Width Options:
    5 1/4 Inch
    Color:
    Red/Clear
    Type Options:
    Grommet Mount
    $37.93
    Qty in Cart: 0
    Price:
    $37.93
    Subtotal:
  • Hogebuilt Down Low Half Fender Kit For Kenworth & Peterbilt

    Hogebuilt Down Low Half Fender Kit For Kenworth & Peterbilt

    HOGEBUILT FENDERS

    $776.99
    Down Low Half Fender Kit* High Quality Mounting Kit* Includes:  - Passenger Front Bracket  - Driver Front Bracket  - Rear Bracket* For Kenworth Ag400L Down Low Half Tandem Fenders* Peterbilt Low Air...
    HB-4DL-KIT
    SKU:
    HB-4DL-KIT
    Product Type:
    Rear Fenders
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Kenworth
    Make:
    Peterbilt
    Position:
    Kit Full
    $776.99
    Qty in Cart: 0
    Price:
    $776.99
    Subtotal:
  • 5 X 48 Inch Stainless Steel Flex Hose By BESTfit

    5 X 48 Inch Stainless Steel Flex Hose By BESTfit

    BESTFIT TRUCK PARTS

    $149.99
    BESTfit 304 Stainless Steel 5 X 48 Inch Flex Hose* High Quality Flex Hose* Sf Series - Non Magnetic* Interlocked Profile* 304 Stainless Steel* 48 Inch Length* 5 Inch Diameter* Sold Individually*...
    GR-SF-548
    SKU:
    GR-SF-548
    Material Options:
    Stainless Steel
    Diameter Options:
    5 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    $149.99
    Qty in Cart: 0
    Price:
    $149.99
    Subtotal:
  • 7-5 X 54 Inch Chrome Curve Turn Exhaust Stack By BESTfit

    7-5 X 54 Inch Chrome Curve Turn Exhaust Stack By BESTfit

    BESTFIT TRUCK PARTS

    $717.99
    BESTfit Chrome 7-5 X 54 Inch Curve Turn Exhaust Stack* High Quality Exhaust Stack* Curved Top Style* Ceramic Lined To Help Prevent Chrome DISColoration* Chrome Plated Finish* 54 Inch Height* 7 Inch...
    GR-SK7-54SBC-L5CL
    SKU:
    GR-SK7-54SBC-L5CL
    Height Options:
    54 Inch
    Style Options:
    Paccar
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Make:
    Universal Items
    Diameter Options:
    7 To 5 Inch
    $717.99
    Qty in Cart: 0
    Price:
    $717.99
    Subtotal:
  • Total: items /

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).


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!