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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.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Smooth Aluminum Toolbox W/ Roll Up Door 36 X 24 X 24 Inch

    Smooth Aluminum Toolbox W/ Roll Up Door 36 X 24 X 24 Inch

    ICONIC

    $1,983.99
    36 X 24 X 24 Inch Smooth Aluminum Toolbox W/ Roll Up Door* High Quality Toolbox* Made Of 1/8 Inch Aluminum* Roll Up Door Style* Includes:  - Smooth Body  - Roll Up Door  - Full Width Stainless Steel...
    09-020100867
    SKU:
    09-020100867
    Length Options:
    36 Inch
    Style Options:
    Underbody Style
    Finish Options:
    Smooth
    Material Options:
    Aluminum
    Product Type:
    Toolboxes
    Height Options:
    24 Inch
    Location:
    Made In USA
    Width Options:
    24 Inch
    Make:
    Universal Items
    $1,983.99
    Qty in Cart: 0
    Price:
    $1,983.99
    Subtotal:
  • Stainless Steel 55 Inch Single Axle Fender W/ Flange & 17 Inch Drop

    Stainless Steel 55 Inch Single Axle Fender W/ Flange & 17 Inch Drop

    TRUX ACCESSORIES

    $599.99
    55 Inch Stainless Steel Single Axle Fender W/ Flange & 17 Inch Drop* High Quality Single Axle Fender* Made Of 16 Gauge Stainless Steel* Designed To Fit Lift Axles* With Flange* Dimensions:  - 55 Inch...
    09-110301018
    SKU:
    09-110301018
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $599.99
    Qty in Cart: 0
    Price:
    $599.99
    Subtotal:
  • LC 48 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Inch Extended OD

    LC 48 Inch Chrome West Coast Exhaust Top Stack W/ 7-5 Inch Extended OD

    LINCOLN CHROME

    $442.99
    Chrome West Coast Exhaust Top Stack 48 Inch W/ 7-5 Inch Extended OD By Lincoln Chrome* High Quality Exhaust Top Stack* Made Of Chrome-Plated Steel* West Coast Curved Top Style* Dimensions:  - 48 Inch...
    09-087548071
    SKU:
    09-087548071
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Location:
    Made In USA
    Material Options:
    Steel
    Height Options:
    48 Inch
    Style Options:
    West Coast Turn
    Diameter Options:
    7 Inch
    Make:
    Universal Items
    $442.99
    Qty in Cart: 0
    Price:
    $442.99
    Subtotal:
  • LC 8 X 72 Chrome West Coast Exhaust Top Stack

    LC 8 X 72 Chrome West Coast Exhaust Top Stack

    LINCOLN CHROME

    $830.99
    8 X 72 Inch West Coast Exhaust Top Stack By Lincoln Chrome* High Quality Exhaust Top Stack* Made Of Chrome-Plated Steel* West Coast Curved Top Style* Works With Seamless Design Elbows and Pipes*...
    09-088072083
    SKU:
    09-088072083
    Height Options:
    72 Inch
    Style Options:
    West Coast Turn
    Diameter Options:
    8 Inch
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Location:
    Made In USA
    Make:
    Universal Items
    $830.99
    Qty in Cart: 0
    Price:
    $830.99
    Subtotal:
  • Smooth Aluminum 55 Inch Single Axle Fenders W/ Flange & 17 Inch Drop

    Smooth Aluminum 55 Inch Single Axle Fenders W/ Flange & 17 Inch Drop

    TRUX ACCESSORIES

    $297.99
    55 Inch Smooth Aluminum Single Axle Fenders W/ Flange & 17 Inch Drop* High Quality Single Axle Fender* Made Of Aluminum* Smooth Polished Finish* Designed To Fit Lift Axles* With Flange* Dimensions: ...
    09-11010112
    SKU:
    09-11010112
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    $297.99
    Qty in Cart: 0
    Price:
    $297.99
    Subtotal:
  • AirDog Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port

    AirDog Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port

    AIRDOG HD

    $13.00
    Fuel Pressure Splice W/ 1/8 Inch NPT Center Fitting Port By AirDog* High Quality Fuel Pressure Splice* Designed To Go Into A 1/2 Inch Fuel Hose* Includes:  - 1/8 Inch NPT Center Fitting Port* Sold...
    09-07030172
    SKU:
    09-07030172
    Product Type:
    Engine Parts
    Location:
    Made In USA
    Make:
    Universal Items
    $13.00
    Qty in Cart: 0
    Price:
    $13.00
    Subtotal:
  • Air Dryer Blow Off Diverter Kit Flexible Molded Rubber W/ Stainless Steel Hose Clamp

    Air Dryer Blow Off Diverter Kit Flexible Molded Rubber W/ Stainless Steel Hose Clamp

    4 STATE TRUCKS

    $9.99
    Flexible Molded Rubber Air Dryer Blow Off Diverter Kit W/ Stainless Steel Hose Clamp* High Quality Air Dryer Blow-Off Diverter Kit* Made Of Flexible Molded Rubber* Heat, Moisture, Road Chemicals, And...
    09-05170519K
    SKU:
    09-05170519K
    Position:
    Kit Full
    Location:
    Made In USA
    Material Options:
    Rubber
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $9.99
    Qty in Cart: 0
    Price:
    $9.99
    Subtotal:
  • Aluminum Deck Plate 9 X 23.5 X 1.25 Inch W/ Mounting Kit & Hardware

    Aluminum Deck Plate 9 X 23.5 X 1.25 Inch W/ Mounting Kit & Hardware

    ICONIC

    $248.99
    9 X 23.5 X 1.25 Inch Aluminum Deck Plate W/ Mounting Kit & Hardware* High Quality Deck Plate* Made Of 1/8 Inch Aluminum* Tread Grip Punched Design* Includes:  - (1) Deck Plate  - Mounting Kit  -...
    09-05030108
    SKU:
    09-05030108
    Location:
    Made In USA
    Width Options:
    32 1/2 Inch
    Position:
    Kit Full
    Height Options:
    1 1/4 Inch
    Finish Options:
    Treaded
    Material Options:
    Aluminum
    Length Options:
    9 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $248.99
    Qty in Cart: 0
    Price:
    $248.99
    Subtotal:
  • Smooth Aluminum Big Mouth Step Box Toolbox 36 X 24 X 29.13 Inch W/ 1 Stainless Steel T Handle

    Smooth Aluminum Big Mouth Step Box Toolbox 36 X 24 X 29.13 Inch W/ 1 Stainless Steel T Handle

    ICONIC

    $1,069.99
    36 X 24 X 29.13 Inch Smooth Aluminum Big Mouth Step Box Toolbox W/ 1 Stainless Steel T Handle* High Quality Toolbox* Made Of 1/8 Inch Aluminum* Big Mouth Step Box Style* 50% Larger Opening Than...
    09-020100880
    SKU:
    09-020100880
    Length Options:
    36 Inch
    Style Options:
    Big Mouth Style
    Finish Options:
    Smooth
    Material Options:
    Aluminum
    Location:
    Made In USA
    Width Options:
    29 Inch
    Height Options:
    24 Inch
    Product Type:
    Toolboxes
    Make:
    Universal Items
    $1,069.99
    Qty in Cart: 0
    Price:
    $1,069.99
    Subtotal:
  • Hogebuilt Tandem/Half Tandem Fender Mounting Bracket For Kenworth

    Hogebuilt Tandem/Half Tandem Fender Mounting Bracket For Kenworth

    HOGEBUILT FENDERS

    $362.99
    Tandem/Half Tandem Fender Mounting Bracket By Hogebuilt* High Quality Fender Mounting Bracket* Designed For Mounting Tandem Or Half Tandem Fenders (Fender Not Included)* Includes:  - (1) Triangle Arm...
    02-1110020
    SKU:
    02-1110020
    Location:
    Made In USA
    Type Options:
    Triangle Arm Mount
    Position:
    Kit Full
    Product Type:
    Rear Fenders
    Style Options:
    Tandum Fender
    Make:
    Kenworth
    $362.99
    Qty in Cart: 0
    Price:
    $362.99
    Subtotal:
  • Hogebuilt Quarter Fender Mounting Bracket For Kenworth

    Hogebuilt Quarter Fender Mounting Bracket For Kenworth

    HOGEBUILT FENDERS

    $475.99
    Quarter Fender Mounting Bracket By Hogebuilt* High Quality Fender Mounting Bracket* Designed For Mounting Quarter Fenders (Fender Not Included)* Includes:  - (1) Triangle Arm Mount* Sold...
    02-1110019
    SKU:
    02-1110019
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Type Options:
    Triangle Arm Mount
    Style Options:
    Quarter Fender
    Product Type:
    Rear Fenders
    Make:
    Kenworth
    $475.99
    Qty in Cart: 0
    Price:
    $475.99
    Subtotal:
  • Hogebuilt Tandem/Half Tandem Fender Mounting Bracket Driver Side For Kenworth

    Hogebuilt Tandem/Half Tandem Fender Mounting Bracket Driver Side For Kenworth

    HOGEBUILT FENDERS

    $475.99
    Driver Side Tandem/Half Tandem Fender Mounting Bracket By Hogebuilt* High Quality Fender Mounting Bracket* Designed For Mounting Tandem Or Half Tandem Fenders (Fender Not Included)* Includes:  - (1)...
    02-1110021
    SKU:
    02-1110021
    Product Type:
    Rear Fenders
    Position:
    Driver Side
    Material Options:
    Stainless Steel
    Type Options:
    Triangle Arm Mount
    Location:
    Made In USA
    Style Options:
    Tandum Fender
    Make:
    Kenworth
    $475.99
    Qty in Cart: 0
    Price:
    $475.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Copper Primary Wire W/ Smooth Surface, Stranded Annealed & Options

    Copper Primary Wire W/ Smooth Surface, Stranded Annealed & Options

    UNITED PACIFIC

    $7.99 - $8.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksGreen 18 Gauge Copper Primary Wire 30 Ft Length W/ Smooth Surface & Stranded AnnealedPrimary Wire 30 Ft...
    PPR_301271
    SKU:
    PPR_301271
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $7.99 - $8.99
    Qty in Cart: 0
    Price:
    $7.99 - $8.99
    Subtotal:
  • Dual Function Watermelon LED Clearance & Marker Light W/ LED & Lens Color Option

    Dual Function Watermelon LED Clearance & Marker Light W/ LED & Lens Color Option

    UNITED PACIFIC

    $11.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksWhite Dual Function Watermelon LED Clearance & Marker Light W/ Clear LensWhite Dual Function Watermelon...
    PPR_301264
    SKU:
    PPR_301264
    Product Type:
    Lighting
    Make:
    Universal Items
    $11.99
    Qty in Cart: 0
    Price:
    $11.99
    Subtotal:
  • Front Axle Cover W/ 10 33 MM Thread On Cylinder Style Nut Cover 13.8125 X 4.25 Inch & Removable Cap W/ Style Options

    Front Axle Cover W/ 10 33 MM Thread On Cylinder Style Nut Cover 13.8125 X 4.25 Inch & Removable Cap W/ Style Options

    UNITED PACIFIC

    $42.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFront Axle Cover W/ Removable Dome Shape Cap & 10 33 MM Thread On Cylinder Style Nut Cover 13.8125 X 4...
    PPR_301252
    SKU:
    PPR_301252
    Product Type:
    Wheels
    Make:
    Universal Items
    $42.99
    Qty in Cart: 0
    Price:
    $42.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Fog Light Bezel Driver/Passenger Side Plastic

    Fog Light Bezel Driver/Passenger Side Plastic

    UNITED PACIFIC

    $15.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFog Light Bezel Driver Side Plastic Replaces N18-1005Driver Side Plastic Fog Light Bezel* High Quality...
    PPR_301267
    SKU:
    PPR_301267
    Product Type:
    Lighting
    Make:
    Universal Items
    $15.99
    Qty in Cart: 0
    Price:
    $15.99
    Subtotal:
  • FREE SHIPPING
    Stainless Steel Mud Flap Hangers 30 Inch W/ 6 Round 4 Inch Dual LEDS W/ Color Options & 3/4 Inch Bolt Spacing

    Stainless Steel Mud Flap Hangers 30 Inch W/ 6 Round 4 Inch Dual LEDS W/ Color Options & 3/4 Inch Bolt Spacing

    TRUX ACCESSORIES

    $434.99 - $480.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks & TrailersStainless Steel Mud Flap Hanger 30 X 7.25 Inch W/ 3.75 Inch Bolt Spacing, 6 Round 4 Inch...
    PPR_301247
    SKU:
    PPR_301247
    Light Options:
    With Lights
    Style Options:
    With Bezel
    Finish Options:
    Polished
    Product Type:
    Bumpers
    Position:
    Rear
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Ready To Ship:
    Yes
    $434.99 - $480.99
    Qty in Cart: 0
    Price:
    $434.99 - $480.99
    Subtotal:
  • Oval Saber Light Bar 6.375 Inch LED Turn Signal Light W/ LED & Lens Color Options

    Oval Saber Light Bar 6.375 Inch LED Turn Signal Light W/ LED & Lens Color Options

    UNITED PACIFIC

    $15.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksAmber Oval Saber Light Bar 6.375 Inch LED Turn Signal Light W/ Amber LensAmber Oval Saber Light Bar 6...
    PPR_301263
    SKU:
    PPR_301263
    Product Type:
    Lighting
    Make:
    Universal Items
    $15.99
    Qty in Cart: 0
    Price:
    $15.99
    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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