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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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  • Quantity
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  • EGR Cooler For Cummins ISX Engine Replaces 2869133, 2878071, 2881783, 2881783NX, 2682806, 2682986, 3683069, 36833253, 3683435, 4089166, 4089436, 4952490, 4956008, 4956008NX

    EGR Cooler For Cummins ISX Engine Replaces 2869133, 2878071, 2881783, 2881783NX, 2682806, 2682986, 3683069, 36833253, 3683435, 4089166, 4089436, 4952490, 4956008, 4956008NX

    AFTERMARKET

    $1,584.99
    Cummins ISX EGR CoolerImprove engine longevity and emissions performance with the EGR Cooler for Cummins ISX Engine, compatible with 1st Generation ISX engines 2003-2007. Designed to replace multiple...
    29-07110009
    SKU:
    29-07110009
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $1,584.99
    Qty in Cart: 0
    Price:
    $1,584.99
    Subtotal:
  • 8 Inch Clutch Grease Hose Replaces SPCLT008P

    8 Inch Clutch Grease Hose Replaces SPCLT008P

    AFTERMARKET

    $18.22
    Clutch Grease HoseDeliver consistent clutch performance with the 8 Inch Clutch Grease Hose, a high-quality replacement for SPCLT008P. Equipped with 1/8 Inch - 27 NPT ends, one end 0.050 Inch A/F and...
    29-07050024
    SKU:
    29-07050024
    Product Type:
    Engine Parts
    Make:
    Universal Items
    Length Options:
    8 Inch
    $18.22
    Qty in Cart: 0
    Price:
    $18.22
    Subtotal:
  • CSM Half Fender Mounting Bracket For Lo Air Leaf & AG400L Suspension

    CSM Half Fender Mounting Bracket For Lo Air Leaf & AG400L Suspension

    CHROME SHOP MAFIA

    $299.99
    Half Fender Mounting Bracket By Chrome Shop MafiaThe CSM Half Fender Mounting Bracket is a precision-engineered bracket set by Chrome Shop Mafia, designed for mounting 1/2 fenders on Lo Air Leaf and...
    29-1110049
    SKU:
    29-1110049
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    Style Options:
    Air Leaf Suspension
    Type Options:
    Half Fender
    $299.99
    Qty in Cart: 0
    Price:
    $299.99
    Subtotal:
  • U- Joint Strap Kit Replaces 205-70-19, N2057018X, 250N7018X, 2500675C91

    U- Joint Strap Kit Replaces 205-70-19, N2057018X, 250N7018X, 2500675C91

    AUTOMANN USA

    $25.66
    U- Joint Strap Kit For SPL250 SeriesKeep your driveshaft secure with this high-strength U-Joint Strap Kit, engineered for 205-70-19, N2057018X, 250N7018X, and 2500675C91. Featuring two durable caps...
    29-05210019
    SKU:
    29-05210019
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Position:
    Kit Full
    $25.66
    Qty in Cart: 0
    Price:
    $25.66
    Subtotal:
  • Pressure Protection Valve Replaces HDXKN20541, GTA20541, KN20541, N30103BB, 20QE3218M, RKN20541, TV20541

    Pressure Protection Valve Replaces HDXKN20541, GTA20541, KN20541, N30103BB, 20QE3218M, RKN20541, TV20541

    AUTOMANN USA

    $21.08
    Pressure Protection ValveExperience consistent air pressure control with this robust Pressure Protection Valve, replacing HDXKN20541, GTA20541, KN20541, N30103BB, 20QE3218M, RKN20541, and TV20541...
    29-051700039
    SKU:
    29-051700039
    Rating:
    65 PSI
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $21.08
    Qty in Cart: 0
    Price:
    $21.08
    Subtotal:
  • 4.06 To 4.38 Inch Stainless Steel T- Bolt Clamp Replaces B92240406, 32863, HTS406

    4.06 To 4.38 Inch Stainless Steel T- Bolt Clamp Replaces B92240406, 32863, HTS406

    AUTOMANN USA

    $11.94
    4.06 To 4.38 Inch T- Bolt ClampSecure your hose connections with this premium 4.06 to 4.38 Inch Stainless Steel T-Bolt Clamp, a reliable replacement for B92240406, 32863, and HTS406. Constructed from...
    29-070200029
    SKU:
    29-070200029
    Product Type:
    Engine Parts
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Width Options:
    3/4 Inch
    $11.94
    Qty in Cart: 0
    Price:
    $11.94
    Subtotal:
  • 5 Inch Aluminized Steel Pre- Formed Band Clamp Replaces K15067, N3550PLAG, W33970

    5 Inch Aluminized Steel Pre- Formed Band Clamp Replaces K15067, N3550PLAG, W33970

    AUTOMANN USA

    $10.02
    5 Inch Pre- Formed Band ClampBuilt for durability and performance, the 5 Inch Aluminized Steel Pre-Formed Band Clamp secures exhaust connections on 5-inch pipes with ease. Its lap joint and stepped...
    29-08000037
    SKU:
    29-08000037
    Shape Options:
    Round
    Diameter Options:
    5 Inch
    Product Type:
    Exhaust
    Material Options:
    Aluminized Steel
    Make:
    Universal Items
    $10.02
    Qty in Cart: 0
    Price:
    $10.02
    Subtotal:
  • 12V Air Dryer Assembly Replaces R955300, 4006110590

    12V Air Dryer Assembly Replaces R955300, 4006110590

    AUTOMANN USA

    $172.99
    SS1200P Type Air Dryer AssemblyKeep your truck's air system in peak condition with the 12V Air Dryer Assembly, a premium replacement for R955300 and 4006110590. This SS1200P assembly with external...
    29-051700037
    SKU:
    29-051700037
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $172.99
    Qty in Cart: 0
    Price:
    $172.99
    Subtotal:
  • Air Spring Rolling Lobe With Plastic Base Replaces W013589372, W014559372, W01M589372, 58520002, 585202, 64489002, 64489-2, 87QL57M, 25173616, 8083871, 68612, 910-18.5P095

    Air Spring Rolling Lobe With Plastic Base Replaces W013589372, W014559372, W01M589372, 58520002, 585202, 64489002, 64489-2, 87QL57M, 25173616, 8083871, 68612, 910-18.5P095

    AUTOMANN USA

    $299.99
    Replacement Air Spring Rolling LobeAchieve consistent suspension performance with the Air Spring Rolling Lobe with Plastic Base, engineered for precision, strength, and durability. This replacement...
    29-051000027
    SKU:
    29-051000027
    Diameter Options:
    10 Inch
    Material Options:
    Plastic/Poly
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $299.99
    Qty in Cart: 0
    Price:
    $299.99
    Subtotal:
  • Relay Valve Replaces EMDKN28510N, KN28510X, 5396KN28510, KN28510, N30108BL, 034057

    Relay Valve Replaces EMDKN28510N, KN28510X, 5396KN28510, KN28510, N30108BL, 034057

    AUTOMANN USA

    $38.75
    RG2 Type Relay ValveTake control of your air brake system with confidence using this robust RG2 Relay Valve. Built for heavy-duty trucks, it features a 5.6 PSI crack pressure and a 1.5-inch...
    29-051700038
    SKU:
    29-051700038
    Diameter Options:
    1/2 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $38.75
    Qty in Cart: 0
    Price:
    $38.75
    Subtotal:
  • Transmission Input Shaft Assembly Replaces E6HZ7017C, FULS1659, 1000CLAS1659, 3088S1659, A3297Y1351, 1091660

    Transmission Input Shaft Assembly Replaces E6HZ7017C, FULS1659, 1000CLAS1659, 3088S1659, A3297Y1351, 1091660

    AFTERMARKET

    $65.99
    Input Shaft Assembly For Fuller RT Series TransmissionsThe Transmission Input Shaft Assembly offers superior quality and reliability for Fuller RT series transmissions, replacing E6HZ7017C, FULS1659,...
    29-07050025
    SKU:
    29-07050025
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    King Pin Kit W/ No Ream Spiral Bushings Replaces KH931L, R202011

    King Pin Kit W/ No Ream Spiral Bushings Replaces KH931L, R202011

    AUTOMANN USA

    Now: $325.49
    Was: $464.99
    No Ream Spiral Bushing King Pin KitRestore your truck's steering precision with the King Pin Kit W/ No-Ream Spiral Bushings, built for durability, accuracy, and heavy-duty operation. Designed to...
    29-050900045
    SKU:
    29-050900045
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Position:
    Kit Full
    Diameter Options:
    2 Inch
    Length Options:
    11 Inch
    Now: $325.49
    Was: $464.99
    Qty in Cart: 0
    Price:
    Now: $325.49
    Was: $464.99
    Subtotal:
  • Air Spring Rolling Lobe With Plastic Base Replaces W013589865, 67043002, 21217038, 23563385, 75266, 910BS-17P1192

    Air Spring Rolling Lobe With Plastic Base Replaces W013589865, 67043002, 21217038, 23563385, 75266, 910BS-17P1192

    AUTOMANN USA

    $197.99
    Replacement Air Spring Rolling LobeEnhance your truck's suspension reliability with the Air Spring Rolling Lobe with Plastic Base, designed for demanding heavy-duty applications. This air spring...
    29-051000026
    SKU:
    29-051000026
    Material Options:
    Plastic/Poly
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Diameter Options:
    9 Inch
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    Subtotal:
  • 72 Inch ABS Sensor Extension Cable Replaces TDAS4497130180, 8945900672, S4497130180, 4497130180

    72 Inch ABS Sensor Extension Cable Replaces TDAS4497130180, 8945900672, S4497130180, 4497130180

    AUTOMANN USA

    $18.43
    2 Wire ABS Sensor Extension CableKeep your ABS system running smoothly with this high-performance 72 Inch ABS Sensor Extension Cable, compatible with 4497130180, TDAS4497130180, S4497130180, and...
    29-051700040
    SKU:
    29-051700040
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Length Options:
    72 Inch
    Ready To Ship:
    Yes
    $18.43
    Qty in Cart: 0
    Price:
    $18.43
    Subtotal:
  • Bulldog HD Rear Shock Absorber 9.41 Inch Stroke Replaces 8086053, 316311,359013201, 65466, 8077874, 8086651, 8169859, 85047, 89435 & M85047

    Bulldog HD Rear Shock Absorber 9.41 Inch Stroke Replaces 8086053, 316311,359013201, 65466, 8077874, 8086651, 8169859, 85047, 89435 & M85047

    BULLDOG HD SHOCKS

    $72.99
    Heavy Duty Rear Shock AbsorberTake control of your truck's rear suspension with the Bulldog HD Rear Shock Absorber, crafted for heavy-duty reliability and long-lasting performance. This shock...
    29-050000076
    SKU:
    29-050000076
    Position:
    Rear
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Material Options:
    Steel
    Length Options:
    25 Inch
    Color:
    Black
    Diameter Options:
    2 1/4 Inch
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • Shock Clamp For Hendrickson Turner Trailer Suspension Replaces B20919

    Shock Clamp For Hendrickson Turner Trailer Suspension Replaces B20919

    AUTOMANN USA

    $6.80
    Shock Clamp With 3/4 Inch IDProtect your trailer suspension system with the Hendrickson Turner Shock Clamp, engineered for reliable performance and long-term durability. Replacing B20919, it features...
    29-051000029
    SKU:
    29-051000029
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Make:
    Trailer
    Width Options:
    1 7/8 Inch
    Height Options:
    2 1/4 Inch
    Material Options:
    Steel
    $6.80
    Qty in Cart: 0
    Price:
    $6.80
    Subtotal:
  • 107 Inch Horizontal Track Coupler W/ 6 Inch Radius- Left Side

    107 Inch Horizontal Track Coupler W/ 6 Inch Radius- Left Side

    TRAMEC SLOAN

    $71.99
    Left Side 107 Inch Horizontal Track Coupler W/ 6 Inch RadiusUpgrade your track system with the 107 Inch Horizontal Track Coupler with 6 Inch Radius - Left Side, crafted for smooth horizontal...
    19-02700400
    SKU:
    19-02700400
    Diameter Options:
    6 Inch
    Width Options:
    1 Inch
    Length Options:
    107 Inch
    Product Type:
    Trailer
    Position:
    Driver Side
    Style Options:
    Horizontal
    Location:
    Made In USA
    Make:
    Universal Items
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Red Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail

    Red Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail

    PETERSON MFG

    $9.90
    Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail- RedBrighten your truck and ensure compliance with the Red Single Diode 3/4 Inch Round Marker/Clearance Light, ideal for...
    177RBT2
    SKU:
    177RBT2
    Diameter Options:
    3/4 Inch
    Product Type:
    Lighting
    Color:
    Red
    Style Options:
    Bullet
    Shape Options:
    Round
    Make:
    Universal Items
    Material Options:
    Plastic/Poly
    Type Options:
    Grommet Mount
    $9.90
    Qty in Cart: 0
    Price:
    $9.90
    Subtotal:
  • Aluminum Oiler Hub Cap With Side Fill Plug With 6 Holes, 5.5 Inch Center to Center

    Aluminum Oiler Hub Cap With Side Fill Plug With 6 Holes, 5.5 Inch Center to Center

    AUTOMANN USA

    $17.36
    Oil Hub Cap With Side Fill PlugOptimize your trailer's axle performance with the Aluminum Oil Hub Cap with Side Fill Plug, a high-quality kit engineered for grease and oil applications. The kit...
    19-20200028
    SKU:
    19-20200028
    Product Type:
    Trailer
    Material Options:
    Aluminum
    Position:
    Kit Full
    Make:
    Universal Items
    $17.36
    Qty in Cart: 0
    Price:
    $17.36
    Subtotal:
  • Amber Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail

    Amber Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail

    PETERSON MFG

    $9.90
    Single Diode 3/4 Inch Round Marker/ Clearance Light W/ Two .180 Bullet Pigtail- AmberEnhance the side and clearance lighting on your truck with the Amber Single Diode 3/4 Inch Round Marker/Clearance...
    177ABT2
    SKU:
    177ABT2
    Product Type:
    Lighting
    Shape Options:
    Round
    Diameter Options:
    3/4 Inch
    Color:
    Amber
    Style Options:
    Bullet
    Make:
    Universal Items
    Type Options:
    Grommet Mount
    Material Options:
    Plastic/Poly
    $9.90
    Qty in Cart: 0
    Price:
    $9.90
    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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