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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
    BESTfit Fiberglass Bumper End For Kenworth T300-T450 1993-2007 - Driver Or Passenger Side

    BESTfit Fiberglass Bumper End For Kenworth T300-T450 1993-2007 - Driver Or Passenger Side

    BESTFIT TRUCK PARTS

    $109.99 - $136.99
    This high quality fiberglass bumper end that fits the Kenworth T300 model is for the driver or passenger side. The bumper end is made in North America and comes with a 1 year warranty.Fitment* Fits...
    PPR_6298
    SKU:
    PPR_6298
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Material Options:
    Fiberglass
    Make:
    Kenworth
    Product Type:
    Bumpers
    Ready To Ship:
    Yes
    $109.99 - $136.99
    Qty in Cart: 0
    Price:
    $109.99 - $136.99
    Subtotal:
  • Limited Quantity Available
    Valley Chrome 12 Inch Chrome Wrap Around Bumper For Kenworth T300

    Valley Chrome 12 Inch Chrome Wrap Around Bumper For Kenworth T300

    VALLEY CHROME PLATING

    $662.99 - $1,144.94
    Step up your Kenworth T300's durability and visual appeal with the Valley Chrome 12 Inch Wrap Around Bumper, engineered to meet the demands of professional drivers. Select from multiple options:...
    PPR_201422
    SKU:
    PPR_201422
    Location:
    Made In USA
    Height Options:
    13 Inch
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Style Options:
    Set Back Axle
    Material Options:
    Steel
    Make:
    Kenworth
    Finish Options:
    Chrome-Plated
    Type Options:
    Standard Mount
    Size Options:
    10 Gauge
    Product Type:
    Bumpers
    Size Options:
    7 Gauge
    Finish Options:
    Paintable
    Style Options:
    Set Forward Axle
    Ready To Ship:
    Yes
    Material Options:
    Stainless Steel
    Size Options:
    11 Gauge
    $662.99 - $1,144.94
    Qty in Cart: 0
    Price:
    $662.99 - $1,144.94
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  • Legendary Extreme Large Glass Watermelon 3 Wire Dual Function W/ Aluminum Base LED Light

    Legendary Extreme Large Glass Watermelon 3 Wire Dual Function W/ Aluminum Base LED Light

    LEGENDARY

    $45.99 - $46.91
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksLegendary Extreme Large Glass Watermelon Cool White-Clear 3 Wire Dual Function W/ Aluminum Base LED...
    PPR_299843
    SKU:
    PPR_299843
    Color:
    Amber
    Color:
    Amber/Clear
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Glass
    Color:
    Red
    Style Options:
    LED
    Style Options:
    Watermelon
    Product Type:
    Lighting
    Color:
    White
    Shape Options:
    Round
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Color:
    Red/Clear
    Color:
    Various
    Material Options:
    Aluminum
    $45.99 - $46.91
    Qty in Cart: 0
    Price:
    $45.99 - $46.91
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  • FREE SHIPPING OVER $249
    5 Inch Band Clamp Stainless Steel Pre-Formed by TPHD

    5 Inch Band Clamp Stainless Steel Pre-Formed by TPHD

    TPHD

    $11.31
    Pre-Formed Band Clamp, Replaces 11ME229P6Effectively connect exhaust system components with this high quality band clamp. Made of polished stainless steel, it is corrosion and heat resistant. The...
    09-0800010
    SKU:
    09-0800010
    Truck Class:
    Heavy Duty
    Diameter Options:
    5 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Finish Options:
    Polished
    Product Type:
    Exhaust
    Style Options:
    Pre-Formed
    Ready To Ship:
    Yes
    $11.31
    Qty in Cart: 0
    Price:
    $11.31
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  • FREE SHIPPING OVER $249
    33MM Chrome Top Hat Nut Cover W/ Flange

    33MM Chrome Top Hat Nut Cover W/ Flange

    LIFETIME NUT COVERS

    $2.44
    Top Hat Nut Cover With Flange 33 MMDo you need some chrome for you hub pilot wheels? 4 State Trucks carries chrome-plated round top hat nut covers made in the USA by Lifetime Nut Covers. These covers...
    09-2005033
    SKU:
    09-2005033
    Location:
    Made In USA
    Truck Class:
    Universal
    Style Options:
    Top Hat
    Size Options:
    33 mm
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Wheels
    Ready To Ship:
    Yes
    $2.44
    Qty in Cart: 0
    Price:
    $2.44
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Limited Quantity Available
    4 Inch Round Red Dual Revolution Stop, Tail & Turn LED Light With Auxiliary & Clear Lens

    4 Inch Round Red Dual Revolution Stop, Tail & Turn LED Light With Auxiliary & Clear Lens

    TRUX ACCESSORIES

    $34.99 - $59.99
    Transforming your rig's lighting can be simple when you choose a versatile LED option like the 4 inch round red Dual Revolution stop/tail/turn LED light with auxiliary function. This sealed...
    PPR_201880
    SKU:
    PPR_201880
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Style Options:
    Dual Revolution
    Shape Options:
    Round
    Make:
    Universal Items
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $34.99 - $59.99
    Qty in Cart: 0
    Price:
    $34.99 - $59.99
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  • 16 Inch Chrome Bumper With Vent Hole For Kenworth T370

    16 Inch Chrome Bumper With Vent Hole For Kenworth T370

    BESTFIT TRUCK PARTS

    $954.99
    Kenworth T370 16 Inch Chrome Bumper With Vent Hole* High Quality Bumper* Chrome-Plated Steel Bumper * 16 Inch* With Vent Hole* Fits Kenworth T370* Sold Individually* Warranty On Bumpers Against...
    02-010016002
    SKU:
    02-010016002
    Truck Class:
    Heavy Duty
    Product Type:
    Bumpers
    Make:
    Kenworth
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    $954.99
    Qty in Cart: 0
    Price:
    $954.99
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  • Bostrom Pro Ride Truck Seat Low Base Mid-Back, Armrests, Ultra-Leather

    Bostrom Pro Ride Truck Seat Low Base Mid-Back, Armrests, Ultra-Leather

    BOSTROM TRUCK SEATS

    $1,134.99 - $1,425.99
    Drive longer and ride better with the Bostrom Pro Ride Low Base Mid-Back Truck Seat with Armrests - Ultra-Leather. Available in Black, Gray, Red, Blue, and Tan Ultra-Leather, this mid-back seat...
    PPR_201842
    SKU:
    PPR_201842
    Truck Class:
    Heavy Duty
    Material Options:
    Ultra Leather
    Make:
    Universal Items
    Product Type:
    Seats
    Ready To Ship:
    Yes
    Color:
    Gray
    Color:
    Black
    Color:
    Red
    Color:
    Blue
    Location:
    Made In USA
    Type Options:
    Mid Back
    Style Options:
    LoPro Suspension
    Color:
    Tan
    $1,134.99 - $1,425.99
    Qty in Cart: 0
    Price:
    $1,134.99 - $1,425.99
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  • FREE SHIPPING OVER $249
    Chrome Plastic Tube Lug Nut Cover With Flange

    Chrome Plastic Tube Lug Nut Cover With Flange

    GRAND GENERAL

    $1.40 - $3.46
    Upgrade the protection and appearance of your truck wheels with the Chrome Plastic Tube Lug Nut Cover With Flange. Available in multiple sizes and attachment styles-including screw-on and push-on...
    PPR_205723
    SKU:
    PPR_205723
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Wheels
    Ready To Ship:
    Yes
    Height Options:
    2 1/2 Inch
    Style Options:
    Thread On
    Height Options:
    3 1/2 Inch
    Style Options:
    Push On
    $1.40 - $3.46
    Qty in Cart: 0
    Price:
    $1.40 - $3.46
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  • FREE SHIPPING OVER $249
    Crossfire Tire Equalizer Valve W/ Stainless Steel Hoses By Dual Dynamics

    Crossfire Tire Equalizer Valve W/ Stainless Steel Hoses By Dual Dynamics

    DUAL DYNAMICS

    $104.99 - $399.99
    Balance tire pressure effortlessly with the Crossfire Tire Equalizer Valve With Stainless Steel Hoses by Dual Dynamics. Available from 65 to 135 PSI and in single or four-pack options, this system...
    PPR_205687
    SKU:
    PPR_205687
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Wheels
    Ready To Ship:
    Yes
    $104.99 - $399.99
    Qty in Cart: 0
    Price:
    $104.99 - $399.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 2 Inch Wide Rubber Fuel Tank Strap Liner W/ Lip - Sold Per Foot

    BESTfit 2 Inch Wide Rubber Fuel Tank Strap Liner W/ Lip - Sold Per Foot

    BESTFIT TRUCK PARTS

    $7.86
    2 Inch Wide Fuel Tank Strap Backing With Lip Sold By The Foot By BESTfitEnsure long-lasting protection for your fuel tank straps with the BESTfit 2 Inch Wide Rubber Strap Liner with Lip. Its 2-inch...
    09-060101
    SKU:
    09-060101
    Truck Class:
    Heavy Duty
    Width Options:
    2 Inch
    Material Options:
    Rubber
    Product Type:
    Fuel Tanks
    Make:
    Universal Items
    Color:
    Black
    Ready To Ship:
    Yes
    $7.86
    Qty in Cart: 0
    Price:
    $7.86
    Subtotal:
  • Valley Chrome 16 Inch Chrome Wrap Around Bumper For Kenworth T270 & T370 SBA

    Valley Chrome 16 Inch Chrome Wrap Around Bumper For Kenworth T270 & T370 SBA

    VALLEY CHROME PLATING

    $1,100.99 - $1,138.99
    Drive with confidence knowing your Kenworth T270 or T370 SBA is equipped with the Valley Chrome 16 Inch Chrome Wrap Around Bumper, engineered for durability and adaptability. From bolt-hole-only...
    PPR_201430
    SKU:
    PPR_201430
    Location:
    Made In USA
    Height Options:
    16 Inch
    Light Options:
    Without Lights
    Truck Class:
    Heavy Duty
    Style Options:
    Set Back Axle
    Material Options:
    Steel
    Make:
    Kenworth
    Finish Options:
    Chrome-Plated
    Type Options:
    Standard Mount
    Size Options:
    10 Gauge
    Product Type:
    Bumpers
    Ready To Ship:
    Yes
    $1,100.99 - $1,138.99
    Qty in Cart: 0
    Price:
    $1,100.99 - $1,138.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 33MM Sleeved Flange Nut For Drive Axles W/ Dual Aluminum Wheels

    TPHD 33MM Sleeved Flange Nut For Drive Axles W/ Dual Aluminum Wheels

    TPHD

    $14.25
    Sleeved Flange Nut 67 MM Height & 39 MM Sleeve LengthThe sleeved flange nut for hub pilot wheels is designed specifically for drive axles with dual aluminum wheels. With a 33mm hex and a 22mm x 1.5mm...
    09-202045
    SKU:
    09-202045
    Truck Class:
    Universal
    Size Options:
    33 mm
    Make:
    Universal Items
    Product Type:
    Wheels
    Material Options:
    Steel
    Style Options:
    Hub Pilot Wheel
    Position:
    Rear
    Location:
    Made In USA
    $14.25
    Qty in Cart: 0
    Price:
    $14.25
    Subtotal:
  • 5 Inch Chrome Curve Turn Out Exhaust Stack Top By BESTfit

    5 Inch Chrome Curve Turn Out Exhaust Stack Top By BESTfit

    BESTFIT TRUCK PARTS

    $63.99 - $607.99
    Are you looking to change up your exhaust system? Stop searching, 4 State Trucks have you covered. With the ability to add a sleek and style design to your truck, you also get that dependability and...
    PPR_202124
    SKU:
    PPR_202124
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Style Options:
    Curve Turn
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Height Options:
    108 Inch
    Height Options:
    84 Inch
    Height Options:
    120 Inch
    Height Options:
    72 Inch
    Height Options:
    12 Inch
    Height Options:
    48 Inch
    Height Options:
    24 Inch
    Height Options:
    36 Inch
    Height Options:
    60 Inch
    Height Options:
    18 Inch
    Height Options:
    96 Inch
    Height Options:
    53 Inch
    Ready To Ship:
    Yes
    $63.99 - $607.99
    Qty in Cart: 0
    Price:
    $63.99 - $607.99
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  • 16 Inch Chrome Set Forward Axle Bumper For Kenworth T300

    16 Inch Chrome Set Forward Axle Bumper For Kenworth T300

    VALLEY CHROME PLATING

    $820.99
    Choose Option(s) to see description.Fitment* Fits Kenworth T300 1997 thru 200716 Inch Chrome SFA Bumper W/ External Step Holes & License Plate Holes For Kenworth T300 SFA16 Inch Chrome SFA Bumper...
    PPR_300523
    SKU:
    PPR_300523
    Truck Class:
    Heavy Duty
    Product Type:
    Bumpers
    Height Options:
    16 Inch
    Style Options:
    Set Forward Axle
    Make:
    Kenworth
    Size Options:
    7 Gauge
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Location:
    Made In USA
    $820.99
    Qty in Cart: 0
    Price:
    $820.99
    Subtotal:
  • FREE SHIPPING OVER $249
    33MM X 3.5 Inch Thread-On Cylinder Nut Covers

    33MM X 3.5 Inch Thread-On Cylinder Nut Covers

    UNITED PACIFIC

    $1.99 - $89.99
    Make your wheels shine with the 33MM x 3.5 Inch Thread-On Cylinder Nut Cover. Designed for hub-piloted wheels with standard 33 mm lug nuts, this aftermarket nut cover features a classic cylinder...
    PPR_204439
    SKU:
    PPR_204439
    Height Options:
    3 1/2 Inch
    Truck Class:
    Universal
    Size Options:
    33 mm
    Material Options:
    Plastic/Poly
    Shape Options:
    Cylindrical
    Make:
    Universal Items
    Style Options:
    Thread On
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Wheels
    Ready To Ship:
    Yes
    $1.99 - $89.99
    Qty in Cart: 0
    Price:
    $1.99 - $89.99
    Subtotal:
  • Hogebuilt 24 Inch Wide 430 Stainless Steel Quarter Fender With Triangle Arm

    Hogebuilt 24 Inch Wide 430 Stainless Steel Quarter Fender With Triangle Arm

    HOGEBUILT FENDERS

    $417.99 - $550.99
    Add a clean custom look while helping reduce road spray with this stainless steel quarter fender pair. Constructed from durable 16 gauge 430 stainless steel with a mirror shine finish, these 24 inch...
    PPR_202012
    SKU:
    PPR_202012
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Width Options:
    24 Inch
    Finish Options:
    Polished
    Product Type:
    Rear Fenders
    Ready To Ship:
    Yes
    Size Options:
    16 Gauge
    Location:
    Made In USA
    Type Options:
    Quarter Fender
    Style Options:
    Rolled Edge
    Height Options:
    34 Inch
    Height Options:
    28 Inch
    Height Options:
    38 Inch
    Height Options:
    31 Inch
    $417.99 - $550.99
    Qty in Cart: 0
    Price:
    $417.99 - $550.99
    Subtotal:
  • FREE SHIPPING OVER $249
    2 Inch Round Rubber Grommet With Open Back, Flush Mount

    2 Inch Round Rubber Grommet With Open Back, Flush Mount

    UNITED PACIFIC

    $1.16
    Black Open Back Rubber GrommetThis black rubber grommet provides additional shock and vibration absorbency for 2 inch round lights. It enables a flush mount that ensures a secure and stable fixture...
    09-160202
    SKU:
    09-160202
    Color:
    Black
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Lighting
    Diameter Options:
    2 1/4 Inch
    Ready To Ship:
    Yes
    $1.16
    Qty in Cart: 0
    Price:
    $1.16
    Subtotal:
  • FREE SHIPPING OVER $249
    Chrome Light Guard Bezel For Double Bubble Bullseye And Tiger Eye Style Lights

    Chrome Light Guard Bezel For Double Bubble Bullseye And Tiger Eye Style Lights

    UNITED PACIFIC

    $6.99
    Chrome Light Guard Bezel For Double Bubble & Tiger Eye Style Marker Clearance LightsDo you need a tiger eye style lens guard for your bullseye lights? 4 State Trucks offers chrome die cast metal...
    09-1605015
    SKU:
    09-1605015
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Lighting
    Ready To Ship:
    Yes
    $6.99
    Qty in Cart: 0
    Price:
    $6.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Seats Inc. 6 Pocket Coverall Seat Covers

    Seats Inc. 6 Pocket Coverall Seat Covers

    SEATS INC

    $66.99
    Keep your seats looking new with Seats Inc. 6 Pocket Coverall Seat Covers, crafted for durability and practical storage. Offered in solid Black/Black or Black/Gray two-tone, these covers include six...
    PPR_681
    SKU:
    PPR_681
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Polyester
    Product Type:
    Seats
    Ready To Ship:
    Yes
    Color:
    Black
    Style Options:
    High Back
    Location:
    Made In USA
    $66.99
    Qty in Cart: 0
    Price:
    $66.99
    Subtotal:
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Adding your products to cart

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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