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Kenworth T300-T450 Parts

Shop heavy-duty mechanical replacement parts designed to fit the Kenworth T300 (1995 - 2007) and Kenworth T450 (1989 - 1997). Order precision-fit, quick-to-ship aftermarket truck parts to minimize downtime. Customize the look of your medium-duty vocational truck with our selection of exterior and interior chrome accessories, or outfit the frame rail with toolboxes, fuel tanks, and more.
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  • FREE SHIPPING OVER $249
    Stainless Steel Angled Down Mirror Bracket For Stud Mount Watermelon Light

    Stainless Steel Angled Down Mirror Bracket For Stud Mount Watermelon Light

    JML KUSTOMS

    $142.99
    Angled Down Style Mirror Bracket For Stud Mount Watermelon LightOptimize your truck's mirror lighting with this durable Stainless Steel Angled Down Mirror Bracket, designed for a single stud-mount...
    09-161000057
    SKU:
    09-161000057
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Product Type:
    Lighting
    Make:
    Universal Items
    $142.99
    Qty in Cart: 0
    Price:
    $142.99
    Subtotal:
  • Chrome Plastic 2-1/2 Inch Trailer Light Housing

    Chrome Plastic 2-1/2 Inch Trailer Light Housing

    LIFETIME NUT COVERS

    $11.01
    Chrome 2-1/2 Inch Trailer Light HousingProtect and stylize your trailer lights with this high-quality Chrome Plastic 2-1/2 Inch Trailer Light Housing. Made from chrome-plated ABS plastic, it resists...
    09-161000051
    SKU:
    09-161000051
    Material Options:
    Plastic/Poly
    Finish Options:
    Chrome-Plated
    Width Options:
    2 1/2 Inch
    Product Type:
    Lighting
    Location:
    Made In USA
    Make:
    Universal Items
    $11.01
    Qty in Cart: 0
    Price:
    $11.01
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  • Stainless Steel Angle Down Turn Signal Bracket With Watermelon Light Hole

    Stainless Steel Angle Down Turn Signal Bracket With Watermelon Light Hole

    JML KUSTOMS

    $61.99
    Angle Down Turn Signal Bracket With Watermelon Light HoleUpgrade your truck's lighting setup with this high-quality Stainless Steel Angle Down Turn Signal Bracket with Watermelon Light Hole. Designed...
    09-161000050
    SKU:
    09-161000050
    Product Type:
    Exterior
    Light Options:
    Without Lights
    Style Options:
    Angled
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • Gray Poly Single Axle Fender

    Gray Poly Single Axle Fender

    SHIFT PRODUCTS

    $163.99
    Poly Single Axle Fender- GrayProtect your truck with this high-quality Gray Poly Single Axle Fender. Made from tough polycarbonate, it can withstand extreme hot and cold temperatures without cracking...
    09-110501050
    SKU:
    09-110501050
    Material Options:
    Plastic/Poly
    Color:
    Gray
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $163.99
    Qty in Cart: 0
    Price:
    $163.99
    Subtotal:
  • Stainless Steel Hardware For Fender Plates

    Stainless Steel Hardware For Fender Plates

    WTI FENDERS

    $3.87
    Hardware For Fender Plates- 3-3/8 X 1.25 Inch Bolt, 3-3/8 Inch Fender Washer, 3-3/8 Inch Std. Washer, 3-Nylock NutSecure your fender plates with this high-quality Stainless Steel Hardware Kit. This...
    09-111000049
    SKU:
    09-111000049
    Product Type:
    Rear Fenders
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $3.87
    Qty in Cart: 0
    Price:
    $3.87
    Subtotal:
  • PP1 Type Dash Control Valve Replaces 287600, 287600N, 287600X, BW287600N, 1681044C91, R955287600, 034014

    PP1 Type Dash Control Valve Replaces 287600, 287600N, 287600X, BW287600N, 1681044C91, R955287600, 034014

    AUTOMANN USA

    $29.68
    Push- Pull Dash Control ValveEnsure accurate air pressure control with this PP1 Type Dash Control Valve, engineered for heavy-duty trucks and commercial vehicles. It includes two 1/4-inch NPT...
    09-15010119
    SKU:
    09-15010119
    Product Type:
    Interior
    Rating:
    40 PSI
    Make:
    Universal Items
    $29.68
    Qty in Cart: 0
    Price:
    $29.68
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  • 12V Solenoid Air Valve

    12V Solenoid Air Valve

    AFTERMARKET

    $72.99
    3.313 Inch 12V Solenoid Air ValveReliable air control starts with this 12V Solenoid Air Valve, built for heavy-duty trucks and trailers. Featuring two 1/8 NPT ports for flexible connections and a 0...
    09-07120006
    SKU:
    09-07120006
    Length Options:
    3 1/4 Inch
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • Brake Shoe Washer 1.30 ID X 1.875 OD Replaces 32180, 820182, B-2019, E1113, 1229B1848, 1229G2971, 1229Q433, 35-1580

    Brake Shoe Washer 1.30 ID X 1.875 OD Replaces 32180, 820182, B-2019, E1113, 1229B1848, 1229G2971, 1229Q433, 35-1580

    AUTOMANN USA

    $0.56
    1.30 ID X 1.875 OD Brake Shoe WasherFor reliable brake shoe alignment and secure assembly, trust this high-quality Brake Shoe Washer. Measuring 1.30 inches inner diameter, 1.875 inches outer...
    09-05170287
    SKU:
    09-05170287
    Diameter Options:
    1 1/2 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $0.56
    Qty in Cart: 0
    Price:
    $0.56
    Subtotal:
  • Lincoln Chrome 6-5 X 36 Inch Chrome Miter Exhaust Stack

    Lincoln Chrome 6-5 X 36 Inch Chrome Miter Exhaust Stack

    LINCOLN CHROME

    $258.99
    6-5 X 36 Inch Miter Exhaust Stack By Lincoln ChromeBoost your truck's exhaust efficiency with this Lincoln Chrome 6-5 X 36 Inch Chrome Miter Exhaust Stack. Featuring a mitered top and plain end, it's...
    09-08653611
    SKU:
    09-08653611
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Height Options:
    36 Inch
    Product Type:
    Exhaust
    Style Options:
    Miter Cut
    Material Options:
    Steel
    Make:
    Universal Items
    $258.99
    Qty in Cart: 0
    Price:
    $258.99
    Subtotal:
  • E7 Type Brake Valve Replaces 287440

    E7 Type Brake Valve Replaces 287440

    AFTERMARKET

    $180.99
    E7 Type Brake ValveOptimize your truck's air brake system with this E7 Type Brake Valve, a replacement for 287440 designed for dual circuit foot operation. Featuring O-ring sealed flange ports, three...
    09-05170224
    SKU:
    09-05170224
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $180.99
    Qty in Cart: 0
    Price:
    $180.99
    Subtotal:
  • Fan Clutch Solenoid Valve- 2 Pin

    Fan Clutch Solenoid Valve- 2 Pin

    AFTERMARKET

    $92.99
    Fan Clutch Solenoid ValveEnsure precise fan clutch operation and reliable engine cooling with this high-quality 2-Pin Fan Clutch Solenoid Valve. Designed for heavy-duty trucks, it features a 2-pin...
    09-07120007
    SKU:
    09-07120007
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    Subtotal:
  • BESTfit Camshaft Bushing 1.50 ID X 2.469 OD X 1.75 Inch Replaces M10WJ237X, E9792A, R617015

    BESTfit Camshaft Bushing 1.50 ID X 2.469 OD X 1.75 Inch Replaces M10WJ237X, E9792A, R617015

    BESTFIT TRUCK PARTS

    $8.35
    1.50 ID X 2.469 OD X 1.75 Inch Camshaft Bushing By BESTfitDepend on this BESTfit Camshaft Bushing to provide long-lasting, low-maintenance performance for your axles. Replacement for M10WJ237X,...
    09-05170150
    SKU:
    09-05170150
    Diameter Options:
    2 1/2 Inch
    Length Options:
    1 3/4 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $8.35
    Qty in Cart: 0
    Price:
    $8.35
    Subtotal:
  • 12V Fan Clutch Solenoid Valve- 2 Pin

    12V Fan Clutch Solenoid Valve- 2 Pin

    AFTERMARKET

    $91.99
    12V Fan Clutch Solenoid ValveMaintain precise engine cooling and optimal fan clutch performance with this high-quality 12V 2-Pin Fan Clutch Solenoid Valve. Designed for heavy-duty truck applications,...
    09-07120008
    SKU:
    09-07120008
    Length Options:
    3 1/4 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • Brake Shoe Lock Screw Replaces 22139, B1213, E579A. 219297, 254253, S265D, S266D, S266D1, 34-1539 .M10HM130, 400103

    Brake Shoe Lock Screw Replaces 22139, B1213, E579A. 219297, 254253, S265D, S266D, S266D1, 34-1539 .M10HM130, 400103

    AUTOMANN USA

    $0.78
    0.938 Inch Brake Shoe Lock ScrewEnsure secure and reliable brake shoe installation with this high-quality Brake Shoe Lock Screw. Specifically engineered for Meritor drive axles measuring 18 Inch X 7...
    09-05170290
    SKU:
    09-05170290
    Length Options:
    1 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $0.78
    Qty in Cart: 0
    Price:
    $0.78
    Subtotal:
  • Cross Tube End Clip Replaces 8226-L26CP12A10, 48RU1856A, 267147C91

    Cross Tube End Clip Replaces 8226-L26CP12A10, 48RU1856A, 267147C91

    AUTOMANN USA

    $9.23
    Cross Tube End Clip For 1-5/8 Inch Tube* High Quality Cross Tube End Clip* TRW Friction Clamp Type* A/F: 0.937" Nut And Bolt With M16 - 1.5" Thread Included* 3 Inch Length* 1.687 Inch Diameter* Sold...
    09-05250086
    SKU:
    09-05250086
    Length Options:
    3 Inch
    Product Type:
    Frame & Chassis
    Diameter Options:
    1 1/2 Inch
    Make:
    Universal Items
    $9.23
    Qty in Cart: 0
    Price:
    $9.23
    Subtotal:
  • FREE SHIPPING OVER $249
    Black Plastic Air Line, 3/4 Inch OD - Sold Per Foot

    Black Plastic Air Line, 3/4 Inch OD - Sold Per Foot

    PARTS DISTRIBUTING

    $6.11
    Airline* High Quality Air Line * Made Of Plastic * 3/4 Inches* Sold By Foot* Warranty On Airline Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    09-0508008
    SKU:
    09-0508008
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $6.11
    Qty in Cart: 0
    Price:
    $6.11
    Subtotal:
  • King Pin Cap Replaces 001622, 1436610008, 143661-0008, 2HB777, 9HD828, R001622, R-001622

    King Pin Cap Replaces 001622, 1436610008, 143661-0008, 2HB777, 9HD828, R001622, R-001622

    AUTOMANN USA

    $16.52
    2.25 Inch King Pin CapProtect your king pin assembly with this high-quality King Pin Cap. Specifically engineered for 13K - 16K Westport axles, it features 2.0-inch, 20-thread construction, a 1...
    09-05200001
    SKU:
    09-05200001
    Diameter Options:
    2 1/4 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $16.52
    Qty in Cart: 0
    Price:
    $16.52
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  • 15.25 Inch Hydraulic Disc Brake Rotor Replaces R4483020, E-14738

    15.25 Inch Hydraulic Disc Brake Rotor Replaces R4483020, E-14738

    AFTERMARKET

    $257.99
    15.25 Inch Hydraulic Disc RotorExperience superior braking efficiency with this 15.25 Inch Hydraulic Disc Brake Rotor. Its hat-shaped rotor design enhances heat dispersion and strength, while ten 0...
    09-05170235
    SKU:
    09-05170235
    Height Options:
    2 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $257.99
    Qty in Cart: 0
    Price:
    $257.99
    Subtotal:
  • 4-5-6 Inch Manual Slack Adjuster Replaces 278288, E2760, KN49020, R822011

    4-5-6 Inch Manual Slack Adjuster Replaces 278288, E2760, KN49020, R822011

    AFTERMARKET

    $67.99
    4-5-6 Inch Manual Slack AdjusterEngineered for heavy-duty air brake systems, this 4-5-6 Inch Manual Slack Adjuster is a direct replacement for 278288, E2760, KN49020, and R822011. With 4, 5, and...
    09-05170285
    SKU:
    09-05170285
    Position:
    Passenger Side
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $67.99
    Qty in Cart: 0
    Price:
    $67.99
    Subtotal:
  • Steel Adapter NPTF Male/NPSM F 45 Replaces 70643-1212, NPM12-NSFX12-45, G60142-1212, G601421212

    Steel Adapter NPTF Male/NPSM F 45 Replaces 70643-1212, NPM12-NSFX12-45, G60142-1212, G601421212

    AUTOMANN USA

    $14.31
    Swivel Steel Adapter, Thread 3/4 Inch-14Maintain reliable hydraulic connections with this high-quality Steel Adapter NPTF Male/NPSM F 45. Featuring a steel construction, a 0.720-inch inner diameter...
    09-02500249
    SKU:
    09-02500249
    Length Options:
    2 1/2 Inch
    Product Type:
    Cargo Control
    Material Options:
    Steel
    Diameter Options:
    3/4 Inch
    Make:
    Universal Items
    $14.31
    Qty in Cart: 0
    Price:
    $14.31
    Subtotal:
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Aftermarket Parts for Kenworth T300 & T450 Trucks

We stock hundreds of critical repair and replacement parts for the T300 and classic T450 model. Our goal is to get you the hardware that’ll maintain your vocational Kenworth truck for years to come. Whether you need engine-cooling components, HVAC parts, air brake replacements, or suspension hardware parts, they’re all available for purchase and ready to ship out of our 30,000-square-foot warehouse.

Kenworth T300 Parts & Accessories

Exterior Upgrades & Chrome: Blind-mount front bumpers, grilles, LED cab lights, mirrors, visors, and hood trim accents. Interior Cab Customizations: Floor trim accessories, gauge panel trim, air brake dash knobs, and cab roof trim upgrades. Mechanical & System Replacements: Larger diesel fuel tanks, suspension components, engine parts, and brake components.

Kenworth T450 Parts & Accessories

Bumpers & Exterior Dressings: Custom front bumpers, OEM and Texas-style bumper options, stainless steel or chrome finishes, grilles, and cab lighting. Dash Accessories & Trim: Interior panel upgrades, custom dash knobs, floor trim kits, and driver-focused cabin accents. Drivetrain & Replacement Components: High-capacity fuel storage upgrades, system replacement parts, and reliable mechanical hardware.

Why Upgrade Your Kenworth Medium-Duty Rig?

Boost Visual Appeal: Chrome cab lights, bold grille inserts, and custom bumpers give your truck a clean, head-turning look on the road or at the dock. Improve Cab Comfort: Add floor trim kits, updated door panels, and dash accessories to create a more comfortable, driver-friendly workspace. Increase Efficiency: Larger fuel storage capacity and ergonomic fuel tank accessories give you more range between fuel stops—perfect for regional hauls or long shifts. Cost-Effective Replacements: Get high-quality parts at a better price than many OEM options, all with reliable fit and function. Custom Options: Choose from multiple finishes, materials, and configurations to match your style and how you use your truck.

Frequently Asked Questions About Kenworth T300-T450 Parts

What year models are compatible with your T300-T450 bumpers and parts?

Our Kenworth T300-T450 parts typically fit models from 1994 through 2008, when these trucks were in production. However, compatibility can vary by specific part. The T300 was produced from 1994-2007, while the T330 and T440 ran through 2008. Always check the product description for exact year ranges, or contact our team with your OEM number for guaranteed fitment verification.

Are your bumpers made from chrome-plated steel or stainless steel, and which is better for my truck?

We offer both chrome-plated steel and polished stainless steel options. Chrome-plated bumpers provide a mirror-like finish at a lower cost but require regular maintenance to prevent rust and pitting. Stainless steel bumpers cost more upfront but resist corrosion better and maintain their appearance with minimal care. For trucks in harsh weather conditions or coastal areas, we recommend stainless steel. For show trucks or mild climates, chrome-plated options work well with proper maintenance.

Do I need special tools or professional installation for T300-T450 bumpers?

Most bumper installations require basic hand tools including socket sets, wrenches, and possibly a drill for certain accessories. The bumper itself typically weighs 40-80 pounds, so having a helper is strongly recommended. Installation usually takes 2-4 hours depending on whether you're adding accessories like fog lights or tow hooks. While many customers successfully install bumpers themselves, some prefer professional installation, especially when adding electrical components or dealing with rusted mounting brackets.

Will aftermarket bumpers affect my truck's approach angle or ground clearance?

Standard replacement bumpers maintain factory dimensions and won't affect approach angles or clearance. However, heavy-duty bumpers with integrated tow hooks or extended designs may protrude 2-4 inches further than stock, potentially reducing approach angle. Texas-style bumpers and some custom options sit lower, which can reduce ground clearance by 1-2 inches. Always check product specifications for exact measurements to ensure the bumper meets your operational needs.

What's the difference between OEM-style and Texas bumpers for T300-T450 trucks?

OEM-style bumpers replicate the factory design with standard mounting points and original dimensions, making them direct replacements. Texas bumpers (also called Texas square bumpers) feature a distinctive squared-off design that extends further from the truck and sits lower, offering enhanced protection and a custom appearance. Texas bumpers typically include more mounting points for accessories but may require slight modifications to air lines or other components during installation.


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