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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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  • Wire Harness W/ Waterproof Over-Molded Plug Housing, 50 3 Prong Right Angle Connectors & 3 Red/Black/White Wires

    Wire Harness W/ Waterproof Over-Molded Plug Housing, 50 3 Prong Right Angle Connectors & 3 Red/Black/White Wires

    4 STATE TRUCKS

    $168.99
    Wire Harness W/ 24 Inch Plug Spacing, Waterproof Over-Molded Plug Housing* High Quality Wire Harness* Waterproof Over-Molded Plug Housing* Includes:  - (50) 3 Prong Right Angle Connectors  - (3)...
    09-1603064K50
    SKU:
    09-1603064K50
    Product Type:
    Electronics
    Position:
    Kit Full
    Make:
    Universal Items
    $168.99
    Qty in Cart: 0
    Price:
    $168.99
    Subtotal:
  • Aluminum Weld On Locking Chain Rack 18 Inch

    Aluminum Weld On Locking Chain Rack 18 Inch

    STURDY-LITE

    $101.99
    Weld On 18 Inch Aluminum Locking Chain Rack* High Quality Locking Chain Rack* Made Of Aluminum Alloy* Weld On Style* 18 Inch Width* Sold Individually* Warranty On Locking Chain Racks Against Defects...
    09-0210001
    SKU:
    09-0210001
    Product Type:
    Cargo Control
    Material Options:
    Aluminum
    Type Options:
    Weld On
    Make:
    Universal Items
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Holland Steel New Style 5th Wheel Top Plate, Left Hand Release With Low Lube Slider Pads

    Holland Steel New Style 5th Wheel Top Plate, Left Hand Release With Low Lube Slider Pads

    OPP - ORIGINAL PARTS PROGRAM

    Now: $2,648.99
    Was: $3,199.99
    Left Side Release Holland New Style Low Lube Steel 5th Wheel Top Plate* High Quality 5th Wheel Top Plate* Made Of Steel* With Teflon Low Lube Slider PadS* Driver Side Release Handle* 55,000 Lbs Max...
    09-05110202
    SKU:
    09-05110202
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Style Options:
    New Holland Style
    Material Options:
    Steel
    Make:
    Universal Items
    Now: $2,648.99
    Was: $3,199.99
    Qty in Cart: 0
    Price:
    Now: $2,648.99
    Was: $3,199.99
    Subtotal:
  • Bores Stainless Steel License Plate Holder W/ Mounting Hardware & HUT Sticker

    Bores Stainless Steel License Plate Holder W/ Mounting Hardware & HUT Sticker

    BORES

    $51.99
    License Plate Holder Stainless Steel W/ Mounting Hardware & HUT Sticker By Bores* High Quality License Plate Holder* Made Of 304 Stainless Steel* Includes:  - Single Plate Holder  - HUT Sticker Place...
    09-01070056
    SKU:
    09-01070056
    Product Type:
    Bumpers
    Height Options:
    10 1/2 Inch
    Width Options:
    12 1/2 Inch
    Location:
    Made In USA
    Length Options:
    3 1/2 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Aluminum Weld On Half Chain Tray 11 X 18 X 7 Inch

    Aluminum Weld On Half Chain Tray 11 X 18 X 7 Inch

    STURDY-LITE

    $144.99
    Weld On Aluminum Half Chain Tray 11 X 18 X 7 Inch* High Quality Half Chain Tray* Made Of Aluminum Alloy* Weld On Style* Dimensions:  - 18 Inch Width  - 11 Inch Height  - 7 Inch Depth* Sold...
    09-0210002
    SKU:
    09-0210002
    Product Type:
    Cargo Control
    Height Options:
    11 Inch
    Type Options:
    Weld On
    Location:
    Made In USA
    Length Options:
    7 Inch
    Width Options:
    18 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • Stainless Steel Wrecker Bar 6.5 X 12 X 48 Inch By Brunner For F1-1416-00001A Cab Rack

    Stainless Steel Wrecker Bar 6.5 X 12 X 48 Inch By Brunner For F1-1416-00001A Cab Rack

    BRUNNER FABRICATION

    $722.99
    Wrecker Bar For Strobe Lights For Cab Racks By Brunner FabricationAre you needing a way to mount lights? Brunner Fabrication and 4 State Trucks have you covered. With a sleek design, the bar gives...
    09-021005
    SKU:
    09-021005
    Length Options:
    6 1/2 Inch
    Product Type:
    Cargo Control
    Finish Options:
    Polished
    Location:
    Made In USA
    Light Options:
    Without Lights
    Height Options:
    12 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Width Options:
    48 Inch
    Ready To Ship:
    Yes
    $722.99
    Qty in Cart: 0
    Price:
    $722.99
    Subtotal:
  • Cab Rack Mounting Kit 19 Inch W/ 4 U Bolts

    Cab Rack Mounting Kit 19 Inch W/ 4 U Bolts

    ALTTEC

    $108.99
    19 Inch Cab Rack Mounting Kit W/ 4 U Bolts* High Quality Cab Rack Mounting Kit* Includes:  - (4) 1/4 Inch Mounting Plates  - (4) 5/8 Inch Threaded U-Bolts  - (8) 5/8 Inch Hex Bolts  - (8) 5/8 Inch...
    09-0210015
    SKU:
    09-0210015
    Position:
    Kit Full
    Product Type:
    Cargo Control
    Make:
    Universal Items
    $108.99
    Qty in Cart: 0
    Price:
    $108.99
    Subtotal:
  • Roadworks Stainless Steel Rear Center Panel W/ 3 Crew Light Holes & 4 Inch Round Light Holes

    Roadworks Stainless Steel Rear Center Panel W/ 3 Crew Light Holes & 4 Inch Round Light Holes

    ROADWORKS

    $215.26
    Stainless Steel Rear Center Panel W/ Bezels & License Plate Holes By Roadworks* High Quality Rear Center Panel* Made Of 14 Gauge 430 Stainless Steel* Includes:  - (2) Round 4 Inch Light Holes (Lights...
    09-011100100
    SKU:
    09-011100100
    Product Type:
    Lighting
    Shape Options:
    Rectangular
    Light Options:
    Without Lights
    Size Options:
    14 Gauge
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $215.26
    Qty in Cart: 0
    Price:
    $215.26
    Subtotal:
  • Roadworks 304 Stainless Steel Rear Light Bar W/ 1 Round 4 Inch Stop, Turn, Tail & 2 Super 21 Light Holes

    Roadworks 304 Stainless Steel Rear Light Bar W/ 1 Round 4 Inch Stop, Turn, Tail & 2 Super 21 Light Holes

    ROADWORKS

    $493.99
    304 Stainless Steel Rear Light Bar W/ 1 Round 4 Inch Stop, Turn, Tail & 2 Super 21 Light Holes By Roadworks* High Quality Rear Light Bar* Made Of 304 Stainless Steel* Includes:  - (2) Rear Light...
    09-011287
    SKU:
    09-011287
    Product Type:
    Bumpers
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Location:
    Made In USA
    Make:
    Universal Items
    $493.99
    Qty in Cart: 0
    Price:
    $493.99
    Subtotal:
  • Minimizer Poly Texas Double Single Axle Style Fender Kit W/ Light Box & Bracket Options For 24.5 Dual Tires

    Minimizer Poly Texas Double Single Axle Style Fender Kit W/ Light Box & Bracket Options For 24.5 Dual Tires

    MINIMIZER

    $761.99 - $2,417.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMinimizer Black Diamond Poly Texas Double Single Axle Style Fender Kit W/ Plastic Brackets & 23 Inch...
    PPR_301152
    SKU:
    PPR_301152
    Truck Class:
    Heavy Duty
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    Height Options:
    23 Inch
    Material Options:
    Plastic/Poly
    Ready To Ship:
    Yes
    $761.99 - $2,417.99
    Qty in Cart: 0
    Price:
    $761.99 - $2,417.99
    Subtotal:
  • Minimizer Poly Texas Double Multiple Axle Fender W/ Lightbox Option For 24.5 Dual Tires

    Minimizer Poly Texas Double Multiple Axle Fender W/ Lightbox Option For 24.5 Dual Tires

    MINIMIZER

    $328.99 - $655.99
    Choose Option(s) to see description.Fitment** Designed for 24.5 Dual Tires **Minimizer White High Bar Texas Double Single Axle Fender W/ Light Box 51 Inch & 23 Inch Drop For 24.5 Dual TiresWhite High...
    PPR_301151
    SKU:
    PPR_301151
    Product Type:
    Rear Fenders
    Height Options:
    23 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Ready To Ship:
    Yes
    $328.99 - $655.99
    Qty in Cart: 0
    Price:
    $328.99 - $655.99
    Subtotal:
  • LC Stainless Steel Short 30 Exhaust Stack

    LC Stainless Steel Short 30 Exhaust Stack

    LINCOLN CHROME

    $335.99 - $984.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksLC 6-5 X 24 Chrome Short 30 Exhaust Stack6-5 X 24 Inch Short 30 Exhaust Stack By Lincoln Chrome* High...
    PPR_301138
    SKU:
    PPR_301138
    Product Type:
    Exhaust
    Diameter Options:
    6 To 5 Inch
    Height Options:
    120 Inch
    Location:
    Made In USA
    Finish Options:
    Polished
    Height Options:
    84 Inch
    Diameter Options:
    8 Inch
    Height Options:
    72 Inch
    Diameter Options:
    7 Inch
    Style Options:
    Short 30 Turn
    Height Options:
    24 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $335.99 - $984.99
    Qty in Cart: 0
    Price:
    $335.99 - $984.99
    Subtotal:
  • Limited Quantity Available
    Minimizer Poly Work Horse Single Replacement Fender Section

    Minimizer Poly Work Horse Single Replacement Fender Section

    MINIMIZER

    $211.99 - $789.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMinimizer Red Poly Work Horse Single Replacement FenderSingle Replacement Red Poly Fender* High Quality...
    PPR_301140
    SKU:
    PPR_301140
    Color:
    Green
    Color:
    Black
    Finish Options:
    Paintable
    Color:
    Gray
    Color:
    Silver
    Material Options:
    Plastic/Poly
    Color:
    White
    Length Options:
    50 Inch
    Type Options:
    Tandum Fender
    Location:
    Made In USA
    Style Options:
    Work Horse Style
    Color:
    Red
    Truck Class:
    Heavy Duty
    Height Options:
    12 Inch
    Make:
    Universal Items
    Product Type:
    Rear Fenders
    Width Options:
    26 Inch
    Ready To Ship:
    Yes
    $211.99 - $789.99
    Qty in Cart: 0
    Price:
    $211.99 - $789.99
    Subtotal:
  • FREE SHIPPING
    Superior Seating Stainless Steel Seat Adapter Plate For Bostrom Seats

    Superior Seating Stainless Steel Seat Adapter Plate For Bostrom Seats

    SUPERIOR SEATING

    $97.99
    Stainless Steel Seat Adapter Plate By Superior SeatingTheSuperior Seating Stainless Steel Seat Adapter Plate for Bostrom Seatsprovides a durable mounting solution for compatible Bostrom truck seats...
    09-192000231
    SKU:
    09-192000231
    Product Type:
    Seats
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
  • FREE SHIPPING
    Superior Seating Stainless Steel Sears Seat Adapter Plate

    Superior Seating Stainless Steel Sears Seat Adapter Plate

    SUPERIOR SEATING

    $97.99
    Stainless Steel Sears Seat Adapter Plate By Superior SeatingTheSuperior Seating Stainless Steel Sears Seat Adapter Plateprovides a durable mounting solution for compatibleSears truck seats. Made from...
    09-192000233
    SKU:
    09-192000233
    Product Type:
    Seats
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $97.99
    Qty in Cart: 0
    Price:
    $97.99
    Subtotal:
  • FREE SHIPPING
    Superior Seating Stainless Steel Seat Adapter Plate W/ Seat Slides

    Superior Seating Stainless Steel Seat Adapter Plate W/ Seat Slides

    SUPERIOR SEATING

    $187.99
    Seat Adapter Plate Stainless Steel W/ Seat Slides By Superior SeatingTheSuperior Seating Stainless Steel Seat Adapter Plate with Seat Slidesprovides a durable mounting solution for compatibleNational...
    09-192000232
    SKU:
    09-192000232
    Product Type:
    Seats
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $187.99
    Qty in Cart: 0
    Price:
    $187.99
    Subtotal:
  • Horn Button W/ 3-Hole Bolt Pattern by Steering Creations

    Horn Button W/ 3-Hole Bolt Pattern by Steering Creations

    STEERING CREATIONS

    $24.47 - $28.55
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksSCI Chrome Button Black Textured Bezel For Steering Creations Steering Wheels W/ 3 Hole Bolt Pattern...
    PPR_301134
    SKU:
    PPR_301134
    Color:
    Black
    Truck Class:
    Heavy Duty
    Product Type:
    Interior
    Make:
    Universal Items
    $24.47 - $28.55
    Qty in Cart: 0
    Price:
    $24.47 - $28.55
    Subtotal:
  • FREE SHIPPING OVER $249
    Stainless Steel License Plate Holder W/ Hinges

    Stainless Steel License Plate Holder W/ Hinges

    UNITED PACIFIC

    $49.01 - $61.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksStainless Steel 1 License Plate Holder W/ HingeHinged Stainless Steel License Plate Holder* High...
    PPR_301133
    SKU:
    PPR_301133
    Truck Class:
    Universal
    Finish Options:
    Polished
    Material Options:
    Stainless Steel
    Product Type:
    Bumpers
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $49.01 - $61.99
    Qty in Cart: 0
    Price:
    $49.01 - $61.99
    Subtotal:
  • P1 LED Marker And Clearance Light W/ Packard Plug

    P1 LED Marker And Clearance Light W/ Packard Plug

    PHOENIX DESIGN

    $17.78 - $20.39
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksRed LED Red Lens P1 Light Kit W/ Packard Plug, Chrome Plastic BezelRed LED Red Lens P1 Light Kit W/...
    PPR_301130
    SKU:
    PPR_301130
    Location:
    Made In USA
    Truck Class:
    Universal
    Color:
    Amber
    Material Options:
    Plastic/Poly
    Finish Options:
    Chrome-Plated
    Color:
    Red
    Truck Class:
    Heavy Duty
    Product Type:
    Lighting
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $17.78 - $20.39
    Qty in Cart: 0
    Price:
    $17.78 - $20.39
    Subtotal:
  • Stainless Steel Blank Switchblade Light Bar

    Stainless Steel Blank Switchblade Light Bar

    ROADWORKS

    $194.99 - $217.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks11.25 Inch Stainless Steel Blank Switchblade Light Bar11.25 Inch Blank Switchblade Light BarGive your...
    PPR_301137
    SKU:
    PPR_301137
    Light Options:
    Without Lights
    Location:
    Made In USA
    Height Options:
    11 Inch
    Product Type:
    Lighting
    Height Options:
    17 1/2 Inch
    Make:
    Universal Items
    $194.99 - $217.99
    Qty in Cart: 0
    Price:
    $194.99 - $217.99
    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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