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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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  • Air Pressure Sensor For Caterpillar Engines Replaces 1619925, 1946722

    Air Pressure Sensor For Caterpillar Engines Replaces 1619925, 1946722

    AUTOMANN USA

    $123.99
    Caterpillar Engine Air Pressure Sensor- 3 PinKeep your Caterpillar engine running efficiently with this high-quality Air Pressure Sensor. With a 3-pin connector and 9/16-inch - 18 threaded base, it...
    29-07100069
    SKU:
    29-07100069
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Length Options:
    2 1/4 Inch
    Make:
    Universal Items
    $123.99
    Qty in Cart: 0
    Price:
    $123.99
    Subtotal:
  • Speed Sensor For CAT C11, C13, C15 Engine Replaces 2016616

    Speed Sensor For CAT C11, C13, C15 Engine Replaces 2016616

    AUTOMANN USA

    $169.99
    Caterpillar Engine Speed Sensor- 2 PinKeep your CAT C11, C13, and C15 engine running smoothly with this Speed Sensor, replacing 2016616. Featuring a 2-pin connector/terminal and a mounting bracket...
    29-07100068
    SKU:
    29-07100068
    Length Options:
    2 1/4 Inch
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $169.99
    Qty in Cart: 0
    Price:
    $169.99
    Subtotal:
  • Crankshaft Position Sensor For Cummins ISB Engine Replaces 4921601

    Crankshaft Position Sensor For Cummins ISB Engine Replaces 4921601

    AUTOMANN USA

    $61.99
    Cummins ISB Engine Crankshaft Position Sensor- 3 PinUpgrade your Cummins ISB engine with this high-quality Crankshaft Position Sensor, replacing 4921601 to provide accurate and dependable timing...
    29-07100054
    SKU:
    29-07100054
    Style Options:
    Cummins
    Length Options:
    2 5/8 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $61.99
    Qty in Cart: 0
    Price:
    $61.99
    Subtotal:
  • Oil Pressure Sensor For Cummins 6C, ISC Engine Replaces 4326849, 4921511, 4088390

    Oil Pressure Sensor For Cummins 6C, ISC Engine Replaces 4326849, 4921511, 4088390

    AUTOMANN USA

    $90.99
    Cummins 6C, ISC Engine Oil Pressure Sensor- 3 PinThis replacement Oil Pressure Sensor for Cummins 6C and ISC engines provides accurate and reliable monitoring, replacing 4326849, 4921511, and 4088390...
    29-07100063
    SKU:
    29-07100063
    Style Options:
    Cummins
    Length Options:
    2 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $90.99
    Qty in Cart: 0
    Price:
    $90.99
    Subtotal:
  • NOx Sensor For Cummins ISB, ISL Engine Replaces 2871979, 2894940, 4954222, 4984577

    NOx Sensor For Cummins ISB, ISL Engine Replaces 2871979, 2894940, 4954222, 4984577

    AUTOMANN USA

    $403.99
    Cummins ISB, ISL Engine NOx Sensor- 4 PinThis NOx Sensor for Cummins ISB and ISL engines delivers accurate nitrogen oxide readings and long-lasting performance. Featuring a 4-pin connector/terminal,...
    29-07100064
    SKU:
    29-07100064
    Product Type:
    Engine Parts
    Material Options:
    Aluminum
    Style Options:
    Cummins
    Make:
    Universal Items
    $403.99
    Qty in Cart: 0
    Price:
    $403.99
    Subtotal:
  • Manifold Pressure Sensor For Cummins L10, M11 & ISM Engine Replaces 4921493, 3330141

    Manifold Pressure Sensor For Cummins L10, M11 & ISM Engine Replaces 4921493, 3330141

    AUTOMANN USA

    $123.99
    Cummins L10, M11 & ISM Engine Manifold Pressure Sensor - 3 PinThis high-quality Manifold Pressure Sensor for Cummins L10, M11, and ISM engines, replacing 4921493 and 3330141, delivers precise and...
    29-07100059
    SKU:
    29-07100059
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Length Options:
    2 Inch
    Make:
    Universal Items
    $123.99
    Qty in Cart: 0
    Price:
    $123.99
    Subtotal:
  • Oil Temp Sensor For Cummins ISM, QSM Engine Replaces 4921477

    Oil Temp Sensor For Cummins ISM, QSM Engine Replaces 4921477

    AUTOMANN USA

    $95.99
    Cummins ISM, QSM Engine Oil Temp Sensor- 4 PinMonitor your engine's oil temperature with precision using this high-quality Oil Temp Sensor for Cummins ISM and QSM engines. Built for durability and...
    29-07100061
    SKU:
    29-07100061
    Product Type:
    Engine Parts
    Length Options:
    2 Inch
    Make:
    Universal Items
    $95.99
    Qty in Cart: 0
    Price:
    $95.99
    Subtotal:
  • Turbo Boost Sensor For Cummiins N14, L10, M11 & ISM Engine Replaces 3084521, 4921501

    Turbo Boost Sensor For Cummiins N14, L10, M11 & ISM Engine Replaces 3084521, 4921501

    AUTOMANN USA

    $108.99
    Cummiins N14, L10, M11 & ISM Engine Turbo Boost Sensor- 3 PinMaintain turbocharger accuracy on your Cummins N14, L10, M11, or ISM engine with this high-quality Turbo Boost Sensor, replacing 3084521...
    29-07100060
    SKU:
    29-07100060
    Style Options:
    Cummins
    Length Options:
    2 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $108.99
    Qty in Cart: 0
    Price:
    $108.99
    Subtotal:
  • Crankshaft Position Sensor For Cummins ISB Engine Replaces 3408430, 4921597, 050705

    Crankshaft Position Sensor For Cummins ISB Engine Replaces 3408430, 4921597, 050705

    AUTOMANN USA

    $66.99
    Cummins ISB Engine Crankshaft Position Sensor- 3 PinMaintain optimal performance for your Cummins ISB engine with this high-quality Crankshaft Position Sensor replacing 3408430, 4921597, and 050705...
    29-07100055
    SKU:
    29-07100055
    Product Type:
    Engine Parts
    Length Options:
    2 1/4 Inch
    Style Options:
    Cummins
    Make:
    Universal Items
    $66.99
    Qty in Cart: 0
    Price:
    $66.99
    Subtotal:
  • Chrome Diesel Exhaust Fluid Cap Cover Without Tether Cutout For Kenworth & Peterbilt

    Chrome Diesel Exhaust Fluid Cap Cover Without Tether Cutout For Kenworth & Peterbilt

    LIFETIME NUT COVERS

    $18.45
    Chrome Diesel Exhaust Fluid Cap CoverKeep your DEF system secure and stylish with this Chrome Diesel Exhaust Fluid Cap Cover for Kenworth and Peterbilt trucks. Made from durable chrome, it fits...
    29-0607017
    SKU:
    29-0607017
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    Make:
    Peterbilt
    Make:
    Kenworth
    $18.45
    Qty in Cart: 0
    Price:
    $18.45
    Subtotal:
  • GP Speed Sensor For Caterpillar C15, C15A Engine Replaces 1918303, 191-8303

    GP Speed Sensor For Caterpillar C15, C15A Engine Replaces 1918303, 191-8303

    AUTOMANN USA

    $93.99
    Caterpillar C15, C15A Engine GP Speed Sensor- 2 PinEnsure accurate speed readings for your Caterpillar C15 and C15A engines with this GP Speed Sensor replacement for 1918303 and 191-8303. It comes...
    29-07100057
    SKU:
    29-07100057
    Product Type:
    Engine Parts
    Style Options:
    2 Prong
    Length Options:
    2 5/8 Inch
    Make:
    Universal Items
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    Subtotal:
  • Oil Temp Sensor For Cummins ISX, QSX15 Engine Replaces 4921475, 3331230

    Oil Temp Sensor For Cummins ISX, QSX15 Engine Replaces 4921475, 3331230

    AUTOMANN USA

    $173.99
    Cummins ISX, QSX15 Engine Oil Temp Sensor- 4 PinProtecting your Cummins ISX and QSX15 engines from thermal stress begins with this high-quality Oil Temp Sensor, engineered to replace 4921475 and...
    29-07100056
    SKU:
    29-07100056
    Length Options:
    3 1/4 Inch
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $173.99
    Qty in Cart: 0
    Price:
    $173.99
    Subtotal:
  • Turbo Boost Manifold Sensor For Detroit Diesel Series 60 Engine Replaces 23522322

    Turbo Boost Manifold Sensor For Detroit Diesel Series 60 Engine Replaces 23522322

    AFTERMARKET

    $93.99
    Detroit Diesel Series 60 Turbo Boost Manifold Sensor- 3 PinKeep your Detroit Diesel Series 60 engine performing at its best with this high-quality Turbo Boost Manifold Sensor. Engineered for...
    29-07100033
    SKU:
    29-07100033
    Product Type:
    Engine Parts
    Style Options:
    Detroit
    Make:
    Universal Items
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    Subtotal:
  • Rear Differential Breather Kit Replaces 2719507162, ZPB0507162, 507162, 513538, ETN507162, SP507162, 3947334

    Rear Differential Breather Kit Replaces 2719507162, ZPB0507162, 507162, 513538, ETN507162, SP507162, 3947334

    AUTOMANN USA

    $20.35
    Rear Differential Breather KitKeep your rear differential operating at peak efficiency with this high-quality Rear Differential Breather Kit. It comes complete with an axle vent and durable steel,...
    29-05210003
    SKU:
    29-05210003
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $20.35
    Qty in Cart: 0
    Price:
    $20.35
    Subtotal:
  • Coolant Temp Sensor Replaces 23514708 For Detroit Diesel Series 60 Engine

    Coolant Temp Sensor Replaces 23514708 For Detroit Diesel Series 60 Engine

    AUTOMANN USA

    $36.37
    Detroit Diesel Series 60 Engine Coolant Temp Sensor- 2 PinThe key to protecting your Detroit Diesel Series 60 engine from overheating lies in dependable monitoring, and this replacement Coolant Temp...
    29-07100052
    SKU:
    29-07100052
    Length Options:
    2 1/4 Inch
    Product Type:
    Engine Parts
    Style Options:
    Detroit
    Make:
    Universal Items
    $36.37
    Qty in Cart: 0
    Price:
    $36.37
    Subtotal:
  • 4.5 X 6 Inch Red Poly CAC Connector/Terminal Hose Replaces 7742, HE8709 For Kenworth & Peterbilt

    4.5 X 6 Inch Red Poly CAC Connector/Terminal Hose Replaces 7742, HE8709 For Kenworth & Peterbilt

    AFTERMARKET

    $82.99
    4.5 X 6 Inch Red Poly CAC Connector/Terminal Hose Replaces 7742, HE8709When your turbo system needs a connector hose built for the toughest operating conditions, this 4.5 x 6 Inch Red Poly CAC hose...
    29-07010001
    SKU:
    29-07010001
    Length Options:
    6 Inch
    Color:
    Red
    Material Options:
    Silicone
    Product Type:
    Engine Parts
    Diameter Options:
    4 1/2 Inch
    Make:
    Peterbilt
    Make:
    Kenworth
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • Engine Fuel Filter Kit For Detroit Diesel DD13, DD15 & DD16 Engine Replaces A4720900451, FK13834

    Engine Fuel Filter Kit For Detroit Diesel DD13, DD15 & DD16 Engine Replaces A4720900451, FK13834

    AFTERMARKET

    $92.99
    Engine Fuel Filter Kit For Detroit Diesel DD13, DD15 & DD16 EngineWhen your Detroit Diesel engine requires superior fuel filtration, this Engine Fuel Filter Kit stands out as a reliable replacement...
    29-07030000
    SKU:
    29-07030000
    Style Options:
    Detroit
    Length Options:
    10 Inch
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    Subtotal:
  • 4 X 6.25 Inch Gray Poly CAC Connector Hose Replaces D506040, D50-6040

    4 X 6.25 Inch Gray Poly CAC Connector Hose Replaces D506040, D50-6040

    AFTERMARKET

    $116.99
    4 X 6.25 Inch Hot Side CAC Connector HoseEngineered to withstand demanding hot-side requirements, this 4 x 6.25 Inch Gray Poly CAC Connector Hose is an ideal replacement. Made with EPDM silicone and...
    29-07020008
    SKU:
    29-07020008
    Diameter Options:
    4 Inch
    Style Options:
    Paccar
    Material Options:
    Silicone
    Length Options:
    6 1/4 Inch
    Color:
    Gray
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
  • Engine Fuel Filter Cap Replaces A4720920008. DDEA4720920008 For Detroit Diesel DD15 Engine

    Engine Fuel Filter Cap Replaces A4720920008. DDEA4720920008 For Detroit Diesel DD15 Engine

    AUTOMANN USA

    $37.09
    2.16 Inch Detroit Diesel DD15 Engine Fuel Filter CapUpgrade your fuel system with this premium Engine Fuel Filter Cap for Detroit Diesel DD15 engines, designed to replace A4720920008 and...
    29-06010001
    SKU:
    29-06010001
    Width Options:
    1 3/4 Inch
    Product Type:
    Fuel Tanks
    Diameter Options:
    2 Inch
    Style Options:
    Detroit
    Make:
    Universal Items
    $37.09
    Qty in Cart: 0
    Price:
    $37.09
    Subtotal:
  • Steering Gear Kit Replaces 2500270C91, 2502009C91, 2585853C91, 2586317C91, 2592441C91, 85114034, 5543551, 5542261, 5545611, 5544861

    Steering Gear Kit Replaces 2500270C91, 2502009C91, 2585853C91, 2586317C91, 2592441C91, 85114034, 5543551, 5542261, 5545611, 5544861

    AFTERMARKET

    $197.99
    Steering Gear Input Seal KitThis Steering Gear Kit is engineered to deliver reliable performance for Sheppard M80, M90, M100, and M110 input shafts. The kit includes high-quality input seals that...
    29-05090052
    SKU:
    29-05090052
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $197.99
    Qty in Cart: 0
    Price:
    $197.99
    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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