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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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  • BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 270GBHVPB5XK, 272GBHVPB5RK, 270GBHVPB5RA

    BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 270GBHVPB5XK, 272GBHVPB5RK, 270GBHVPB5RA

    BESTFIT TRUCK PARTS

    $3,311.99
    Six Bolt PowerShift Power Take-Off By BESTfit Replaces 270GBHVPB5XK, 272GBHVPB5RK, 270GBHVPB5RA Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Six Bolt PowerShift Power...
    29-07050044
    SKU:
    29-07050044
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $3,311.99
    Qty in Cart: 0
    Price:
    $3,311.99
    Subtotal:
  • BESTfit Ten Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 890HAFJWB5XK

    BESTfit Ten Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 890HAFJWB5XK

    BESTFIT TRUCK PARTS

    $6,161.99
    Ten Bolt PowerShift Power Take-Off By BESTfit Replaces 890HAFJWB5XK Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Ten Bolt PowerShift Power Take-Off is a premium...
    29-07050058
    SKU:
    29-07050058
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $6,161.99
    Qty in Cart: 0
    Price:
    $6,161.99
    Subtotal:
  • BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180276MD, 270RDKUPB3RA, 270RDKUPB3XK

    BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180276MD, 270RDKUPB3RA, 270RDKUPB3XK

    BESTFIT TRUCK PARTS

    $3,699.99
    Six Bolt PowerShift Power Take-Off By BESTfit Replaces 180276MD, 270RDKUPB3RA, 270RDKUPB3XK Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Six Bolt PowerShift Power...
    29-07050049
    SKU:
    29-07050049
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $3,699.99
    Qty in Cart: 0
    Price:
    $3,699.99
    Subtotal:
  • BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XSAHXA3XD

    BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XSAHXA3XD

    BESTFIT TRUCK PARTS

    $2,165.99
    Eight Bolt Power Take-Off By BESTfit Replaces 680XSAHXA3XD Fits Mechanical TransmissionsMade for extreme-duty performance, the BESTfit Eight Bolt Power Take-Off is a premium replacement for...
    29-07050047
    SKU:
    29-07050047
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,165.99
    Qty in Cart: 0
    Price:
    $2,165.99
    Subtotal:
  • BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XRAHXA3XD

    BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XRAHXA3XD

    BESTFIT TRUCK PARTS

    $2,165.99
    Eight Bolt Power Take-Off By BESTfit Replaces 680XRAHXA3XD Fits Mechanical TransmissionsDesigned for extreme duty performance, the BESTfit Eight Bolt Power Take-Off is a premium replacement for...
    29-07050040
    SKU:
    29-07050040
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,165.99
    Qty in Cart: 0
    Price:
    $2,165.99
    Subtotal:
  • BESTfit Stud Kit Replaces 717078X

    BESTfit Stud Kit Replaces 717078X

    BESTFIT TRUCK PARTS

    $80.99
    Stud Kit By BESTfitMade for strength and reliability, the BESTfit Stud Kit is a premium replacement for 717078X designed specifically for Chelsea PTO systems. Built for heavy-duty applications, this...
    29-07050054
    SKU:
    29-07050054
    Product Type:
    Engine Parts
    Position:
    Kit Full
    Make:
    Universal Items
    $80.99
    Qty in Cart: 0
    Price:
    $80.99
    Subtotal:
  • BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XFAHXA3RA, SC534, 489XFAHXA3XQ

    BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XFAHXA3RA, SC534, 489XFAHXA3XQ

    BESTFIT TRUCK PARTS

    $1,527.99
    Power Take-Off By BESTfit Replaces 489XFAHXA3RA, SC534, 489XFAHXA3XQ Fits Mechanical TransmissionsEngineered for strength and reliability, the BESTfit Power Take-Off is a premium replacement for...
    29-07050045
    SKU:
    29-07050045
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,527.99
    Qty in Cart: 0
    Price:
    $1,527.99
    Subtotal:
  • BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XFAHXV5RK, 489XFAHXV5RA, 489XFAHXV5XQ

    BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XFAHXV5RK, 489XFAHXV5RA, 489XFAHXV5XQ

    BESTFIT TRUCK PARTS

    $1,401.99
    Power Take-Off By BESTfit Replaces 489XFAHXV5RK, 489XFAHXV5RA, 489XFAHXV5XQ Fits Mechanical TransmissionsBuilt for strength and reliability, the BESTfit Power Take-Off is a high-quality replacement...
    29-07050036
    SKU:
    29-07050036
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,401.99
    Qty in Cart: 0
    Price:
    $1,401.99
    Subtotal:
  • BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XSAHXV3XD

    BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces 680XSAHXV3XD

    BESTFIT TRUCK PARTS

    $2,040.99
    Eight Bolt Power Take-Off BESTfit Replaces 680XSAHXV3XD Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Eight Bolt Power Take-Off is a premium replacement for...
    29-07050043
    SKU:
    29-07050043
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $2,040.99
    Qty in Cart: 0
    Price:
    $2,040.99
    Subtotal:
  • BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces MH8SC01XA1SE, 489XHAHXA3XD, TG8SU6807A1BX

    BESTfit Eight Bolt Power Take-Off For Mechanical Transmissions Replaces MH8SC01XA1SE, 489XHAHXA3XD, TG8SU6807A1BX

    BESTFIT TRUCK PARTS

    $1,355.99
    Eight Bolt Power Take-Off By BESTfit Replaces MH8SC01XA1SE, 489XHAHXA3XD, TG8SU6807A1BX Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Eight Bolt Power Take-Off is a...
    29-07050050
    SKU:
    29-07050050
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,355.99
    Qty in Cart: 0
    Price:
    $1,355.99
    Subtotal:
  • BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XRAHXA3RA, 489XRAHXA3XQ, 489XRAHXA3RK

    BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XRAHXA3RA, 489XRAHXA3XQ, 489XRAHXA3RK

    BESTFIT TRUCK PARTS

    $1,527.99
    Power Take-Off By BESTfit Replaces 489XRAHXA3RA, 489XRAHXA3XQ, 489XRAHXA3RK Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Power Take-Off is a premium replacement for...
    29-07050041
    SKU:
    29-07050041
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,527.99
    Qty in Cart: 0
    Price:
    $1,527.99
    Subtotal:
  • BESTfit Ten Bolt PowerShift PTO For Mechanical Transmissions Replaces 180274NYT, 890HAFJWB5AF

    BESTfit Ten Bolt PowerShift PTO For Mechanical Transmissions Replaces 180274NYT, 890HAFJWB5AF

    BESTFIT TRUCK PARTS

    $6,161.99
    Ten Bolt PowerShift Power Take-Off By BESTfit Replaces 180274NYT, 890HAFJWB5AF Fits Mechanical TransmissionsBuilt for strength and reliability, the BESTfit Ten Bolt PowerShift PTO is a premium...
    29-07050032
    SKU:
    29-07050032
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $6,161.99
    Qty in Cart: 0
    Price:
    $6,161.99
    Subtotal:
  • BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK

    BESTfit Six Bolt PowerShift Power Take-Off For Mechanical Transmissions Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK

    BESTFIT TRUCK PARTS

    $3,311.99
    Six Bolt PowerShift Power Take-Off By BESTfit Replaces 180274J, 270GBHVPB3XK, 272GBHVPB3RK Fits Mechanical TransmissionsDesigned for strength and dependable operation, the BESTfit Six Bolt PowerShift...
    29-07050039
    SKU:
    29-07050039
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $3,311.99
    Qty in Cart: 0
    Price:
    $3,311.99
    Subtotal:
  • BESTfit Six Bolt Power Take-Off For Mechanical Transmissions Replaces 442XRAHXA3XD, 442XRAHXA3XD

    BESTfit Six Bolt Power Take-Off For Mechanical Transmissions Replaces 442XRAHXA3XD, 442XRAHXA3XD

    BESTFIT TRUCK PARTS

    $1,321.99
    Six Bolt Power Take-Off By BESTfit Replaces 442XRAHXA3XD, 442XRAHXA3XD Fits Mechanical TransmissionsMade for strength and reliability, the BESTfit Six Bolt Power Take-Off is a premium replacement for...
    29-07050046
    SKU:
    29-07050046
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,321.99
    Qty in Cart: 0
    Price:
    $1,321.99
    Subtotal:
  • BESTfit Geared Adapter Power Take-Off Replaces 645GAHX3XX

    BESTfit Geared Adapter Power Take-Off Replaces 645GAHX3XX

    BESTFIT TRUCK PARTS

    $836.99
    Geared Adapter Power Take-Off By BESTfit Replaces 645GAHX3XXBuilt for strength and dependable performance, the BESTfit Geared Adapter Power Take-Off is a premium replacement for 645GAHX3XX designed...
    29-07050037
    SKU:
    29-07050037
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $836.99
    Qty in Cart: 0
    Price:
    $836.99
    Subtotal:
  • BESTfit Stud Kit Replaces 707072XB, 717072X, 17072XB

    BESTfit Stud Kit Replaces 707072XB, 717072X, 17072XB

    BESTFIT TRUCK PARTS

    $32.99
    Stud Kit By BESTfit Replaces 707072XB, 717072X, 17072XBEnsure a strong and reliable PTO installation with the BESTfit Stud Kit, a premium replacement for 707072XB, 717072X, and 17072XB designed...
    29-07050042
    SKU:
    29-07050042
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $32.99
    Qty in Cart: 0
    Price:
    $32.99
    Subtotal:
  • BESTfit Stud Kit Replaces 328170217X, 328170217XB

    BESTfit Stud Kit Replaces 328170217X, 328170217XB

    BESTFIT TRUCK PARTS

    $272.99
    Stud Kit By BESTfit Replaces 328170217X, 328170217XBEnsure a strong and reliable PTO installation with the BESTfit Stud Kit, a premium replacement for 328170217X and 328170217XB designed specifically...
    29-07050035
    SKU:
    29-07050035
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $272.99
    Qty in Cart: 0
    Price:
    $272.99
    Subtotal:
  • BESTfit Stud Kit Replaces 32817076X, 32817076XB, 71702X

    BESTfit Stud Kit Replaces 32817076X, 32817076XB, 71702X

    BESTFIT TRUCK PARTS

    $22.99
    Stud Kit By BESTfit Replaces 32817076X, 32817076XB, 71702XEnsure a strong and reliable PTO installation with the BESTfit Stud Kit, a premium replacement for 32817076X, 32817076XB, and 71702X designed...
    29-07050033
    SKU:
    29-07050033
    Position:
    Kit Full
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $22.99
    Qty in Cart: 0
    Price:
    $22.99
    Subtotal:
  • BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XRAHXV3RA, 489XRAHXV3XQ, 489XRAHXV3RK

    BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XRAHXV3RA, 489XRAHXV3XQ, 489XRAHXV3RK

    BESTFIT TRUCK PARTS

    $1,401.99
    Power Take-Off By BESTfit Replaces 489XRAHXV3RA, 489XRAHXV3XQ, 489XRAHXV3RK Fits Mechanical TransmissionBuilt for strength and reliability, the BESTfit Power Take-Off is a premium replacement for...
    29-07050038
    SKU:
    29-07050038
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,401.99
    Qty in Cart: 0
    Price:
    $1,401.99
    Subtotal:
  • BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XLAHXV3RK, 489XLAHXV3RA, 489XLAHXV3RB

    BESTfit Power Take-Off For Mechanical Transmissions Replaces 489XLAHXV3RK, 489XLAHXV3RA, 489XLAHXV3RB

    BESTFIT TRUCK PARTS

    $1,401.99
    Power Take-Off By BESTfit Replaces 489XLAHXV3RK, 489XLAHXV3RA, 489XLAHXV3RB Fits Mechanical TransmissionsBuilt for strength and dependable performance, the BESTfit Power Take-Off is a high-quality...
    29-07050031
    SKU:
    29-07050031
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,401.99
    Qty in Cart: 0
    Price:
    $1,401.99
    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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