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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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  • 28.25 Inch Chrome Plastic Air Horn- 115 DB Output

    28.25 Inch Chrome Plastic Air Horn- 115 DB Output

    AUTOMANN USA

    $87.99
    28.25 Inch Chrome Plastic Air HornCommand attention on the highway with the 28.25 Inch Chrome Plastic Air Horn, designed to produce a robust 115 DB sound that enhances safety for truck drivers. Its...
    09-051300125
    SKU:
    09-051300125
    Product Type:
    Frame & Chassis
    Material Options:
    Plastic/Poly
    Diameter Options:
    6 Inch
    Length Options:
    28 Inch
    Finish Options:
    Chrome-Plated
    Make:
    Universal Items
    $87.99
    Qty in Cart: 0
    Price:
    $87.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Brunner Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T Lights

    Brunner Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T Lights

    BRUNNER FABRICATION

    Now: $1,448.29
    Was: $2,068.99
    Stainless Steel Upper Light Bar W/ 5 Red 2 Inch Marker Lights, 2 Clear 4 Inch Flood Lights & 6 Red 4 Inch S/T/T LightsKeep your truck safe and highly visible with the Brunner Stainless Steel Upper...
    09-02100011
    SKU:
    09-02100011
    Product Type:
    Cargo Control
    Material Options:
    Stainless Steel
    Light Options:
    With Lights
    Color:
    Red/Clear
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $1,448.29
    Was: $2,068.99
    Qty in Cart: 0
    Price:
    Now: $1,448.29
    Was: $2,068.99
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  • 3.5 X 48 Inch Stainless Steel Channel W/ 5 Supernova Light Holes

    3.5 X 48 Inch Stainless Steel Channel W/ 5 Supernova Light Holes

    ROADWORKS

    $65.99
    3.5 X 48 Inch Channel W/ 5 Supernova Light HolesBring both durability and style to your truck with this 3.5 x 48 Inch Stainless Steel Channel with 5 Supernova light holes. Constructed from...
    09-010600155
    SKU:
    09-010600155
    Light Options:
    Without Lights
    Location:
    Made In USA
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Length Options:
    48 Inch
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
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  • 76 Inch Stainless Steel Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes

    76 Inch Stainless Steel Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes

    ICONIC

    $499.99
    76 Inch Light Bar W/ 6 4-Inch Light Holes & 3 2-Inch Light Holes For Flat RackBoost both safety and style with the 76 Inch Stainless Steel Light Bar. Designed for 76-inch flat racks, it includes six...
    09-0210013
    SKU:
    09-0210013
    Product Type:
    Cargo Control
    Length Options:
    76 Inch
    Material Options:
    Stainless Steel
    Light Options:
    Without Lights
    Make:
    Universal Items
    $499.99
    Qty in Cart: 0
    Price:
    $499.99
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  • 8 Inch Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light Holes

    8 Inch Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light Holes

    ROADWORKS

    $203.99
    8 Inch 304 Stainless Steel Rear Center Panel W/ 5 Round 4-Inch Light HolesImprove your truck's rear performance and style with this 8 Inch Stainless Steel Rear Center Panel. Featuring five round...
    09-01110109
    SKU:
    09-01110109
    Light Options:
    Without Lights
    Product Type:
    Bumpers
    Location:
    Made In USA
    Height Options:
    8 Inch
    Position:
    Center
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Spring Loaded Hinge Cargo Bar Holder

    Spring Loaded Hinge Cargo Bar Holder

    AUTOMANN USA

    Now: $53.19
    Was: $75.99
    Cargo Bar Holder With Rubber InsertsSecure and organize your truck's cargo efficiently with this Spring Loaded Hinge Cargo Bar Holder. Built with a durable hinged design and equipped with rubber...
    09-020200092
    SKU:
    09-020200092
    Material Options:
    Plastic/Poly
    Product Type:
    Cargo Control
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Now: $53.19
    Was: $75.99
    Qty in Cart: 0
    Price:
    Now: $53.19
    Was: $75.99
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  • Stainless Steel Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights For Peterbilt 589

    Stainless Steel Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights For Peterbilt 589

    VALLEY CHROME PLATING

    $184.99
    Front Air Cleaner Light Panel W/ 6 Amber Watermelon Lights Fits Peterbilt 589Improve visibility and style on your Peterbilt 589 with these Stainless Steel Front Air Cleaner Light Panels, featuring...
    01-09051149
    SKU:
    01-09051149
    Product Type:
    Exterior
    Style Options:
    Watermelon
    Light Options:
    With Lights
    Location:
    Made In USA
    Color:
    Amber
    Material Options:
    Stainless Steel
    Size Options:
    18 Gauge
    Make:
    Universal Items
    $184.99
    Qty in Cart: 0
    Price:
    $184.99
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  • Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern

    Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern

    ROCKWOOD

    $20.01
    304 Stainless Steel Eaton Fuller 10 Speed Overdrive Shift Pattern* High Quality Shift Pattern* For Eaton Fuller 10 Speed Overdrive (RTO)* 304 Stainless Steel* Sold Individually* Warranty On Shift...
    U20401
    SKU:
    U20401
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Make:
    Universal Items
    $20.01
    Qty in Cart: 0
    Price:
    $20.01
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  • Electric Fan Shroud For Rigmaster Generator

    Electric Fan Shroud For Rigmaster Generator

    RIGMASTER

    $168.99
    Electric Fan Shroud* High Quality Electric Fan Shroud* For Rigmaster Generator* Sold Individually* Warranty On Electric Fan Shrouds Against Defects In Workmanship & Material From Date Of Purchase***...
    RP1000143
    SKU:
    RP1000143
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $168.99
    Qty in Cart: 0
    Price:
    $168.99
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  • Radiator Mount Bushing For Rigmaster Generator

    Radiator Mount Bushing For Rigmaster Generator

    RIGMASTER

    $2.03
    Radiator Mount Bushing* High Quality Radiator Mount Bushing* For Rigmaster Generator* Sold Individually* Warranty On Radiator Mount Bushings Against Defects In Workmanship & Material From Date Of...
    RP12048
    SKU:
    RP12048
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern

    Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern

    ROCKWOOD

    $20.19
    304 Stainless Steel Eaton Fuller 15 Speed Overdrive Shift Pattern* High Quality Shift Pattern* For Eaton Fuller 15 Speed Overdrive (RTO)* 304 Stainless Steel* Sold Individually* Warranty On Shift...
    R20467
    SKU:
    R20467
    Material Options:
    Stainless Steel
    Product Type:
    Interior
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $20.19
    Qty in Cart: 0
    Price:
    $20.19
    Subtotal:
  • Generator Cover For Rigmaster Generator

    Generator Cover For Rigmaster Generator

    RIGMASTER

    $174.99
    Generator Cover* High Quality Generator Cover* For Rigmaster Generator* Sold Individually* Warranty On Generator Covers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    RP1000131
    SKU:
    RP1000131
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $174.99
    Qty in Cart: 0
    Price:
    $174.99
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  • Tail Light Lens- Red For ST60 Series Lights

    Tail Light Lens- Red For ST60 Series Lights

    OPTRONICS

    $3.13
    Replacement Red Tail Light Lens* High Quality Lens* Replacement Tail Light Lens* For ST60 Series* Oblong Shape* Acrylic* Red* 6.5 Inch Wide* 5.5 Inch Height* 0.12 Inch Depth* Screw-On* Sold...
    PLA60RB
    SKU:
    PLA60RB
    Product Type:
    Lighting
    Color:
    Red
    Length Options:
    5 1/2 Inch
    Width Options:
    6 1/2 Inch
    Make:
    Universal Items
    Material Options:
    Acrylic
    $3.13
    Qty in Cart: 0
    Price:
    $3.13
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  • Rectangular Red/ Clear Stop, Turn, Tail Light

    Rectangular Red/ Clear Stop, Turn, Tail Light

    OPTRONICS

    $37.93
    Rectangular Red/ Clear Stop, Turn, Tail Light- Grommet Mount* High Quality Stop/Turn/Tail Light* Rectangular* Clear Lens With Red Tinted Reflectors* Pl-3 Connection* 12-24 Volt* Grommet Mount*...
    PLSTL35CCR1224B
    SKU:
    PLSTL35CCR1224B
    Material Options:
    Plastic/Poly
    Product Type:
    Lighting
    Make:
    Universal Items
    Style Options:
    LED
    Shape Options:
    Rectangular
    Height Options:
    3 1/2 Inch
    Width Options:
    5 1/4 Inch
    Color:
    Red/Clear
    Type Options:
    Grommet Mount
    $37.93
    Qty in Cart: 0
    Price:
    $37.93
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  • Hogebuilt Down Low Half Fender Kit For Kenworth & Peterbilt

    Hogebuilt Down Low Half Fender Kit For Kenworth & Peterbilt

    HOGEBUILT FENDERS

    $776.99
    Down Low Half Fender Kit* High Quality Mounting Kit* Includes:  - Passenger Front Bracket  - Driver Front Bracket  - Rear Bracket* For Kenworth Ag400L Down Low Half Tandem Fenders* Peterbilt Low Air...
    HB-4DL-KIT
    SKU:
    HB-4DL-KIT
    Product Type:
    Rear Fenders
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Kenworth
    Make:
    Peterbilt
    Position:
    Kit Full
    $776.99
    Qty in Cart: 0
    Price:
    $776.99
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  • 5 X 48 Inch Stainless Steel Flex Hose By BESTfit

    5 X 48 Inch Stainless Steel Flex Hose By BESTfit

    BESTFIT TRUCK PARTS

    $149.99
    BESTfit 304 Stainless Steel 5 X 48 Inch Flex Hose* High Quality Flex Hose* Sf Series - Non Magnetic* Interlocked Profile* 304 Stainless Steel* 48 Inch Length* 5 Inch Diameter* Sold Individually*...
    GR-SF-548
    SKU:
    GR-SF-548
    Material Options:
    Stainless Steel
    Diameter Options:
    5 Inch
    Product Type:
    Exhaust
    Make:
    Universal Items
    $149.99
    Qty in Cart: 0
    Price:
    $149.99
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  • 7-5 X 54 Inch Chrome Curve Turn Exhaust Stack By BESTfit

    7-5 X 54 Inch Chrome Curve Turn Exhaust Stack By BESTfit

    BESTFIT TRUCK PARTS

    $717.99
    BESTfit Chrome 7-5 X 54 Inch Curve Turn Exhaust Stack* High Quality Exhaust Stack* Curved Top Style* Ceramic Lined To Help Prevent Chrome DISColoration* Chrome Plated Finish* 54 Inch Height* 7 Inch...
    GR-SK7-54SBC-L5CL
    SKU:
    GR-SK7-54SBC-L5CL
    Height Options:
    54 Inch
    Style Options:
    Paccar
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Make:
    Universal Items
    Diameter Options:
    7 To 5 Inch
    $717.99
    Qty in Cart: 0
    Price:
    $717.99
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  • 12 Inch Black Set Forward Axle Bumper W/ Mounting & Vent Holes For Kenworth T280, T380 & T480

    12 Inch Black Set Forward Axle Bumper W/ Mounting & Vent Holes For Kenworth T280, T380 & T480

    VALLEY CHROME PLATING

    $769.99
    Valley Chrome 12 Inch Set Forward Axle Bumper W/ Mounting & Vent Holes* High Quality Bumper* Set Forward Axle* Mounting Holes* Vent Holes* Mounts To Factory Brackets* Chrome* Black* 12 Inch Width*...
    FY000118P
    SKU:
    FY000118P
    Finish Options:
    Black Powder Coat
    Light Options:
    Without Lights
    Material Options:
    Steel
    Product Type:
    Bumpers
    Style Options:
    Set Forward Axle
    Height Options:
    12 Inch
    Location:
    Made In USA
    Make:
    Kenworth
    $769.99
    Qty in Cart: 0
    Price:
    $769.99
    Subtotal:
  • 7 X 96 Inch Chrome Miter Exhaust Stack By BESTfit

    7 X 96 Inch Chrome Miter Exhaust Stack By BESTfit

    BESTFIT TRUCK PARTS

    $877.99
    BESTfit Chrome 7 X 96 Inch Miter Exhaust Stack* High Quality Exhaust Stack* Miter Top Style* Chrome Plated Finish* 96 Inch Height* 7 Inch Inner Diameter* Sold Individually* Warranty On Exhaust Stacks...
    GR-P7-96SBC
    SKU:
    GR-P7-96SBC
    Diameter Options:
    7 Inch
    Height Options:
    96 Inch
    Product Type:
    Exhaust
    Finish Options:
    Chrome-Plated
    Style Options:
    Miter Cut
    Make:
    Universal Items
    Material Options:
    Steel
    $877.99
    Qty in Cart: 0
    Price:
    $877.99
    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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