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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.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Wear Ring Kit Replaces KITRING3000

    Wear Ring Kit Replaces KITRING3000

    AFTERMARKET

    $271.99
    3000 Series Wear Ring KitKeep your hydraulic systems in top condition with the Wear Ring Kit Replaces KITRING3000, designed for precise performance and extended durability. Included hardware ensures...
    09-05110030
    SKU:
    09-05110030
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $271.99
    Qty in Cart: 0
    Price:
    $271.99
    Subtotal:
  • 21 Inch Stainless Steel Blank Top Flap Accent Trim

    21 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $37.33
    21 Inch Blank Top Flap Accent TrimAchieve durable protection and a refined look with the 21 Inch Stainless Steel Blank Top Flap Accent Trim. Crafted from premium stainless steel and measuring 21...
    09-05070622
    SKU:
    09-05070622
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    21 Inch
    Make:
    Universal Items
    $37.33
    Qty in Cart: 0
    Price:
    $37.33
    Subtotal:
  • 19 Inch Stainless Steel Blank Top Flap Accent Trim

    19 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $36.29
    19 Inch Blank Top Flap Accent TrimUpgrade your truck's mud flaps with the 19 Inch Stainless Steel Blank Top Flap Accent Trim, crafted from premium stainless steel for exceptional durability and...
    09-05070621
    SKU:
    09-05070621
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    19 Inch
    Make:
    Universal Items
    $36.29
    Qty in Cart: 0
    Price:
    $36.29
    Subtotal:
  • Stainless Steel “I Love My Kids” Flap Weights

    Stainless Steel “I Love My Kids” Flap Weights

    ROADWORKS

    $71.99
    24 Inch "I Love My Kids" Flap WeightsExpress your love and personalize your truck with the Stainless Steel "I Love My Kids" Flap Weights, designed for durability and style. Made from high-quality...
    09-05070605
    SKU:
    09-05070605
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    24 Inch
    Make:
    Universal Items
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • 15 Inch Stainless Steel Blank Top Flap Accent Trim

    15 Inch Stainless Steel Blank Top Flap Accent Trim

    ROADWORKS

    $33.18
    15 Inch Blank Top Flap Accent TrimStrengthen your mud flaps and elevate your truck's look with the 15 Inch Stainless Steel Blank Top Flap Accent Trim. Made from premium stainless steel, each 15-inch...
    09-05070620
    SKU:
    09-05070620
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Mud Flaps
    Width Options:
    15 Inch
    Make:
    Universal Items
    $33.18
    Qty in Cart: 0
    Price:
    $33.18
    Subtotal:
  • 1/4 X 1-1/2 Inch Brass Long Nipple Replaces 3327X4, 215PNL415

    1/4 X 1-1/2 Inch Brass Long Nipple Replaces 3327X4, 215PNL415

    AUTOMANN USA

    $2.54
    1/4 X 1-1/2 Inch Brass Long NippleBuild dependable connections with the 1/4 X 1-1/2 Inch Brass Long Nipple, a premium brass fitting designed for leak-free performance. With male NPT threads on both...
    09-05040130
    SKU:
    09-05040130
    Diameter Options:
    1/4 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $2.54
    Qty in Cart: 0
    Price:
    $2.54
    Subtotal:
  • 1/2 X 1-1/2 Inch Brass Long Nipple Replaces 215PNL815

    1/2 X 1-1/2 Inch Brass Long Nipple Replaces 215PNL815

    AUTOMANN USA

    $3.80
    1/2 X 1-1/2 Inch Brass Long NippleDepend on the 1/2 X 1-1/2 Inch Brass Long Nipple for strong, leak-resistant pipe connections. Crafted from solid brass with male NPT threads on both ends, this...
    09-05040117
    SKU:
    09-05040117
    Diameter Options:
    1/2 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.80
    Qty in Cart: 0
    Price:
    $3.80
    Subtotal:
  • 3/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10503B102

    3/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10503B102

    AUTOMANN USA

    $0.91
    3/16 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/16" Push-On Hose* Made Of Brass* Barb Hose End: 3/16 Inch Inner Diameter* Male NPT...
    09-05040116
    SKU:
    09-05040116
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $0.91
    Qty in Cart: 0
    Price:
    $0.91
    Subtotal:
  • 3/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10503B104

    3/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10503B104

    AUTOMANN USA

    $1.81
    3/16 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040115
    SKU:
    09-05040115
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.81
    Qty in Cart: 0
    Price:
    $1.81
    Subtotal:
  • 3/8 X 1-1/2 Inch Brass Long Nipple Replaces 3327X6, 215PNL615

    3/8 X 1-1/2 Inch Brass Long Nipple Replaces 3327X6, 215PNL615

    AUTOMANN USA

    $3.81
    3/8 X 1-1/2 Inch Brass Long NippleAchieve reliable and leak-free connections with the 3/8 X 1-1/2 Inch Brass Long Nipple, a high-quality fitting built for durability and professional performance...
    09-05040119
    SKU:
    09-05040119
    Diameter Options:
    3/8 Inch
    Length Options:
    1 1/2 Inch
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.81
    Qty in Cart: 0
    Price:
    $3.81
    Subtotal:
  • 3/8 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10506B106, 125HBL66

    3/8 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10506B106, 125HBL66

    AUTOMANN USA

    $2.30
    3/8 Inch Barb X 3/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040113
    SKU:
    09-05040113
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    $2.30
    Qty in Cart: 0
    Price:
    $2.30
    Subtotal:
  • 3/8 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10506B104, 125HBL64

    3/8 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10506B104, 125HBL64

    AUTOMANN USA

    $2.25
    3/8 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040112
    SKU:
    09-05040112
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $2.25
    Qty in Cart: 0
    Price:
    $2.25
    Subtotal:
  • 3/8 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10506B102, 125HBL62

    3/8 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10506B102, 125HBL62

    AUTOMANN USA

    $1.57
    3/8 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040111
    SKU:
    09-05040111
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $1.57
    Qty in Cart: 0
    Price:
    $1.57
    Subtotal:
  • 3/8 Inch Barb X 1/2 Inch Pipe Brass Hose Fitting Replaces 10506B108, 125HBL68

    3/8 Inch Barb X 1/2 Inch Pipe Brass Hose Fitting Replaces 10506B108, 125HBL68

    AUTOMANN USA

    $3.90
    3/8 Inch Barb X 1/2 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 3/8" Push-On Hose* Made Of Brass* Barb Hose End: 3/8 Inch Inner Diameter* Male NPT...
    09-05040114
    SKU:
    09-05040114
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $3.90
    Qty in Cart: 0
    Price:
    $3.90
    Subtotal:
  • 5/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10505B102, 125HBL52

    5/16 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10505B102, 125HBL52

    AUTOMANN USA

    $2.25
    5/16 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 5/16" Push-On Hose* Made Of Brass* Barb Hose End: 5/16 Inch Inner Diameter* Male NPT...
    09-05040109
    SKU:
    09-05040109
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.25
    Qty in Cart: 0
    Price:
    $2.25
    Subtotal:
  • 1/4 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10504B104, 125HBL44

    1/4 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10504B104, 125HBL44

    AUTOMANN USA

    $1.57
    1/4 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/4" Push-On Hose* Made Of Brass* Barb Hose End: 1/4 Inch Inner Diameter* Male NPT...
    09-05040108
    SKU:
    09-05040108
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.57
    Qty in Cart: 0
    Price:
    $1.57
    Subtotal:
  • 5/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10505B104, 125HBL54

    5/16 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10505B104, 125HBL54

    AUTOMANN USA

    $1.79
    5/16 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 5/16" Push-On Hose* Made Of Brass* Barb Hose End: 5/16 Inch Inner Diameter* Male NPT...
    09-05040110
    SKU:
    09-05040110
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $1.79
    Qty in Cart: 0
    Price:
    $1.79
    Subtotal:
  • 1/4 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10504B102, 125HBL42

    1/4 Inch Barb X 1/8 Inch Pipe Brass Hose Fitting Replaces 10504B102, 125HBL42

    AUTOMANN USA

    $1.14
    1/4 Inch Barb X 1/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/4" Push-On Hose* Made Of Brass* Barb Hose End: 1/4 Inch Inner Diameter* Male NPT...
    09-05040107
    SKU:
    09-05040107
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $1.14
    Qty in Cart: 0
    Price:
    $1.14
    Subtotal:
  • 1/2 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10508B106, 125HBL86, 1256

    1/2 Inch Barb X 3/8 Inch Pipe Brass Hose Fitting Replaces 10508B106, 125HBL86, 1256

    AUTOMANN USA

    $2.19
    1/2 Inch Barb X 3/8 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/2" Push-On Hose* Made Of Brass* Barb Hose End: 1/2 Inch Inner Diameter* Male NPT...
    09-05040105
    SKU:
    09-05040105
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.19
    Qty in Cart: 0
    Price:
    $2.19
    Subtotal:
  • 1/2 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10508B104, 125HBL84

    1/2 Inch Barb X 1/4 Inch Pipe Brass Hose Fitting Replaces 10508B104, 125HBL84

    AUTOMANN USA

    $2.01
    1/2 Inch Barb X 1/4 Inch Pipe Hose Fitting* High Quality Hose Fitting* Hose Barb To Male NPT Connection* Use With 1/2" Push-On Hose* Made Of Brass* Barb Hose End: 1/2 Inch Inner Diameter* Male NPT...
    09-05040104
    SKU:
    09-05040104
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Brass
    Make:
    Universal Items
    $2.01
    Qty in Cart: 0
    Price:
    $2.01
    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).


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