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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 Cummins EGT Temperature Sensor For Cummins ISB 6.7L 2011 Replaces 1906310, 1906310PE, 2129818

    BESTfit Cummins EGT Temperature Sensor For Cummins ISB 6.7L 2011 Replaces 1906310, 1906310PE, 2129818

    BESTFIT TRUCK PARTS

    $355.99
    Cummins EGT Temperature Sensor By BESTfit Replaces 1906310, 1906310PE, 2129818 Fits Cummins ISB 6.7L 2011The BESTfit Cummins EGT Temperature Sensor is a premium replacement for OEM part numbers...
    29-07100078
    SKU:
    29-07100078
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $355.99
    Qty in Cart: 0
    Price:
    $355.99
    Subtotal:
  • BESTfit Cummins Temperature Sensor For Cummins Replaces 2120750005, 2872467, 5EL026

    BESTfit Cummins Temperature Sensor For Cummins Replaces 2120750005, 2872467, 5EL026

    BESTFIT TRUCK PARTS

    $118.34
    Temperature Sensor By BESTfit Replaces 2120750005, 2872467, 5EL026 Fits CumminsUpgrade your engine monitoring system with the BESTfit Cummins Temperature Sensor, a direct replacement for OEM part...
    29-07100081
    SKU:
    29-07100081
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $118.34
    Qty in Cart: 0
    Price:
    $118.34
    Subtotal:
  • BESTfit Cummins Sensor For Cummins Replaces 0451231, 10021005, 2120752007

    BESTfit Cummins Sensor For Cummins Replaces 0451231, 10021005, 2120752007

    BESTFIT TRUCK PARTS

    $106.99
    Sensor By BESTfit Replaces 0451231, 10021005, 2120752007 Fits CumminsThe BESTfit Cummins Sensor is a high-quality engine sensor solution compatible with OEM part numbers 0451231, 10021005, and...
    29-07100075
    SKU:
    29-07100075
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $106.99
    Qty in Cart: 0
    Price:
    $106.99
    Subtotal:
  • BESTfit Super Repair Kit Replaces 109881, 1651839C91, 601158, 9500HP

    BESTfit Super Repair Kit Replaces 109881, 1651839C91, 601158, 9500HP

    BESTFIT TRUCK PARTS

    $691.99
    Super Repair Kit For Air Operated Fan Clutch By BESTfit Replaces 109881, 1651839C91, 601158, 9500HPUpgrade your cooling system with the BESTfit Super Repair Kit, a direct replacement for OEM part...
    29-07060193
    SKU:
    29-07060193
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $691.99
    Qty in Cart: 0
    Price:
    $691.99
    Subtotal:
  • BESTfit Cummins Temperature Sensor For Cummins Replaces 2120752035, 2872261, 2872261RX

    BESTfit Cummins Temperature Sensor For Cummins Replaces 2120752035, 2872261, 2872261RX

    BESTFIT TRUCK PARTS

    $162.99
    Temperature Sensor By BESTfit Replaces 2120752035, 2872261, 2872261RX Fits CumminsUpgrade your engine monitoring system with the BESTfit Cummins Temperature Sensor, a direct replacement for OEM part...
    29-07100077
    SKU:
    29-07100077
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $162.99
    Qty in Cart: 0
    Price:
    $162.99
    Subtotal:
  • BESTfit Air Operated Fan Clutch 5 Inch Pilot Replaces 10900975001, 10900975001B, 10900990001

    BESTfit Air Operated Fan Clutch 5 Inch Pilot Replaces 10900975001, 10900975001B, 10900990001

    BESTFIT TRUCK PARTS

    $792.99
    5 Inch Pilot Air Operated Fan Clutch By BESTfit Replaces 10900975001, 10900975001B, 10900990001The BESTfit Air Operated Fan Clutch 5" Pilot is a high-quality replacement solution for OEM part numbers...
    29-07060203
    SKU:
    29-07060203
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $792.99
    Qty in Cart: 0
    Price:
    $792.99
    Subtotal:
  • BESTfit Quick Super Repair Kit Replaces 14256, 166627, 198472, 994900

    BESTfit Quick Super Repair Kit Replaces 14256, 166627, 198472, 994900

    BESTFIT TRUCK PARTS

    $892.99
    Quick Super Repair Kit DriveMaster Advantage By BESTfit Replaces 14256, 166627, 198472, 994900Upgrade your cooling system maintenance with the BESTfit Quick Super Repair Kit, a direct replacement for...
    29-07060200
    SKU:
    29-07060200
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $892.99
    Qty in Cart: 0
    Price:
    $892.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt W/O Install Kit Replaces 660GSAHXV3XD

    BESTfit Power Take-Off 6 Bolt W/O Install Kit Replaces 660GSAHXV3XD

    BESTFIT TRUCK PARTS

    $2,094.99
    6 Bolt Power Take-Off W/O Install Kit By BESTfit Replaces 660GSAHXV3XDBuilt for strength and reliability, the BESTfit 6 Bolt PTO Without Install Kit replaces OEM reference 660GSAHXV3XD for Chelsea...
    29-07050122
    SKU:
    29-07050122
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,094.99
    Qty in Cart: 0
    Price:
    $2,094.99
    Subtotal:
  • BESTfit Polar Extreme Super Repair Kit Replaces 1311840103, 142561, 994902

    BESTfit Polar Extreme Super Repair Kit Replaces 1311840103, 142561, 994902

    BESTFIT TRUCK PARTS

    $947.99
    Polar Extreme Super Repair Kit DriveMaster By BESTfit Replaces 1311840103, 142561, 994902Upgrade your cooling system maintenance with the BESTfit Polar Extreme Super Repair Kit, a direct replacement...
    29-07060202
    SKU:
    29-07060202
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $947.99
    Qty in Cart: 0
    Price:
    $947.99
    Subtotal:
  • BESTfit Power Take-Off 8 Bolt No Assembly Shift Replaces 489XRAHXH3XK

    BESTfit Power Take-Off 8 Bolt No Assembly Shift Replaces 489XRAHXH3XK

    BESTFIT TRUCK PARTS

    $1,120.99
    8 Bolt No Assembly Shift Power Take-Off By BESTfit Replaces 489XRAHXH3XKBuilt for strength and precision, the BESTfit 8 Bolt No Assembly Shift Power Take-Off replaces OEM reference 489XRAHXH3XK for...
    29-07050118
    SKU:
    29-07050118
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,120.99
    Qty in Cart: 0
    Price:
    $1,120.99
    Subtotal:
  • BESTfit Solenoid Valve 12 Volt

    BESTfit Solenoid Valve 12 Volt

    BESTFIT TRUCK PARTS

    $107.99
    12V Solenoid Valve By BESTfitUpgrade your cooling system with the BESTfit 12 Volt Solenoid Valve, engineered for Horton air-operated fan clutch systems requiring dependable airflow control. This...
    29-07060198
    SKU:
    29-07060198
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $107.99
    Qty in Cart: 0
    Price:
    $107.99
    Subtotal:
  • BESTfit Air Operated Fan Clutch Replaces 10900960001, 10900965001B, 20955539

    BESTfit Air Operated Fan Clutch Replaces 10900960001, 10900965001B, 20955539

    BESTFIT TRUCK PARTS

    $630.99
    Air Operated Fan Clutch By BESTfit Replaces 10900960001, 10900965001B, 20955539Upgrade your cooling system with the BESTfit Air Operated Fan Clutch, a direct replacement for OEM part numbers...
    29-07060192
    SKU:
    29-07060192
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $630.99
    Qty in Cart: 0
    Price:
    $630.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt W/ Rotatable Output Flange Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XK

    BESTfit Power Take-Off 6 Bolt W/ Rotatable Output Flange Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XK

    BESTFIT TRUCK PARTS

    $3,364.99
    6 Bolt W/ Rotatable Output Power Take-Off By BESTfit Replaces 271GBHVPB5RA, 271GBHVPB5RB, 271GBHVPB5XKBuilt for strength and reliability, the BESTfit 6 Bolt PTO with Rotatable Output Flange replaces...
    29-07050114
    SKU:
    29-07050114
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $3,364.99
    Qty in Cart: 0
    Price:
    $3,364.99
    Subtotal:
  • BESTfit Power Take-Off 10 Bolt 12V Electric Over Hydraulic Replaces 180274HDL, 890CAFJWB3XY

    BESTfit Power Take-Off 10 Bolt 12V Electric Over Hydraulic Replaces 180274HDL, 890CAFJWB3XY

    BESTFIT TRUCK PARTS

    $6,161.99
    10 Bolt 12V Electric Over Hydraulic Power Take-Off By BESTfit Replaces 180274HDL, 890CAFJWB3XYUpgrade your PTO system with the BESTfit 10 Bolt 12V Electric Over Hydraulic Power Take-Off, a direct...
    29-07050124
    SKU:
    29-07050124
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $6,161.99
    Qty in Cart: 0
    Price:
    $6,161.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt, 3 Assembly Arrangement Replaces 660GSAHXA3XD

    BESTfit Power Take-Off 6 Bolt, 3 Assembly Arrangement Replaces 660GSAHXA3XD

    BESTFIT TRUCK PARTS

    $2,227.99
    6 Bolt, 3 Assembly Arrangement Power Take-Off By BESTfit Replaces 660GSAHXA3XDBuilt for strength and reliability, the BESTfit 6 Bolt 3 Assembly Power Take-Off replaces OEM reference 660GSAHXA3XD for...
    29-07050121
    SKU:
    29-07050121
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,227.99
    Qty in Cart: 0
    Price:
    $2,227.99
    Subtotal:
  • BESTfit Stud Kit For 272X, E Standard, And Eaton Brazil

    BESTfit Stud Kit For 272X, E Standard, And Eaton Brazil

    BESTFIT TRUCK PARTS

    $199.99
    Turbocharger Stud Kit By BESTfit Fits 272X, E Standard, And Eaton BrazilUpgrade your PTO installation with the BESTfit Stud Kit for 272X, E Standard, and Eaton Brazil systems, engineered for Chelsea...
    29-07050110
    SKU:
    29-07050110
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $199.99
    Qty in Cart: 0
    Price:
    $199.99
    Subtotal:
  • BESTfit Power Take-Off Mounting Kit, Series 267-277-859

    BESTfit Power Take-Off Mounting Kit, Series 267-277-859

    BESTFIT TRUCK PARTS

    $116.99
    Series 267-277-859 Mounting Kit By BESTfitUpgrade your PTO installation with the BESTfit Mounting Kit for Series 267-277-859, engineered for strength, precision, and long-term reliability. This PTO...
    29-07050123
    SKU:
    29-07050123
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
  • BESTfit Power Take-Off 8 Bolt W/ Deep Mount Replaces 489ZLDAXV5XD

    BESTfit Power Take-Off 8 Bolt W/ Deep Mount Replaces 489ZLDAXV5XD

    BESTFIT TRUCK PARTS

    $1,343.99
    8 Bolt W/ Deep Mount Power Take-Off By BESTfit Replaces 489ZLDAXV5XDBuilt for strength and precision, the BESTfit 8 Bolt Deep Mount Power Take-Off replaces OEM reference 489ZLDAXV5XD for Chelsea 489...
    29-07050120
    SKU:
    29-07050120
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,343.99
    Qty in Cart: 0
    Price:
    $1,343.99
    Subtotal:
  • BESTfit Power Take-Off 8 Bolt, 6 Assembly Arrangement Replaces 489XHAHXA6XD

    BESTfit Power Take-Off 8 Bolt, 6 Assembly Arrangement Replaces 489XHAHXA6XD

    BESTFIT TRUCK PARTS

    $1,355.99
    8 Bolt, 6 Assembly Arrangement Power Take-Off By BESTfit Replaces 489XHAHXA6XDBuilt for strength and reliability, the BESTfit 8 Bolt Air Shift Power Take-Off replaces OEM reference 489XHAHXA6XD for...
    29-07050117
    SKU:
    29-07050117
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,355.99
    Qty in Cart: 0
    Price:
    $1,355.99
    Subtotal:
  • BESTfit Power Take-Off 6 Bolt Air Shift Replaces 442GFAHXA3XD, MH6GB01XA1SE

    BESTfit Power Take-Off 6 Bolt Air Shift Replaces 442GFAHXA3XD, MH6GB01XA1SE

    BESTFIT TRUCK PARTS

    $1,333.99
    6 Bolt Air Shift Power Take-Off By BESTfit Replaces 442GFAHXA3XD, MH6GB01XA1SEBuilt for strength and reliability, the BESTfit 6 Bolt Air Shift Power Take-Off replaces OEM references 442GFAHXA3XD and...
    29-07050106
    SKU:
    29-07050106
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,333.99
    Qty in Cart: 0
    Price:
    $1,333.99
    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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