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Kenworth T2000 Engine Parts & Cooling

Boost your Freightliner's performance with top-quality engine parts and cooling components from 4 State Trucks. With everything from Transmission Coolers to Oil Filters, we've got you covered. Questions? Our team is here to help!
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  • BESTfit Detroit Diesel Water Pump For Detroit 60 Series 12.7L Engine Replaces 2282335, 7141X, RW4124X

    BESTfit Detroit Diesel Water Pump For Detroit 60 Series 12.7L Engine Replaces 2282335, 7141X, RW4124X

    BESTFIT TRUCK PARTS

    $543.99
    Water Pump Engine W/ EGR By BESTfit Replaces 2282335, 7141X, RW4124X Fits Detroit 60 Series 12.7L EngineUpgrade your engine cooling system with the BESTfit Detroit Diesel Water Pump, a direct...
    29-07120161
    SKU:
    29-07120161
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $543.99
    Qty in Cart: 0
    Price:
    $543.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins ISX/QSX 2002-2008 Replaces 4923759, 7084X, WP04936

    BESTfit Cummins Water Pump For Cummins ISX/QSX 2002-2008 Replaces 4923759, 7084X, WP04936

    BESTFIT TRUCK PARTS

    $391.99
    Cummins Water Pump By BESTfit Replaces 4923759, 7084X, WP04936 Fits Cummins ISX/QSX 2002-2008Enhance your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part...
    29-07120168
    SKU:
    29-07120168
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $391.99
    Qty in Cart: 0
    Price:
    $391.99
    Subtotal:
  • BESTfit CAT Water Pump For Caterpillar 3126 & 3116 Engine Replaces US4508, 3522150, 4346107

    BESTfit CAT Water Pump For Caterpillar 3126 & 3116 Engine Replaces US4508, 3522150, 4346107

    BESTFIT TRUCK PARTS

    $451.99
    CAT Water Pump By BESTfit Replaces US4508, 3522150, 4346107 Fits Caterpillar 3126 & 3116 EngineUpgrade your engine cooling system with the BESTfit CAT Water Pump, a direct replacement for OEM part...
    29-07120171
    SKU:
    29-07120171
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $451.99
    Qty in Cart: 0
    Price:
    $451.99
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  • BESTfit Remanufactured CAT Water Pump For Caterpillar C13 Engine Replaces 2285811, 3764216, US952

    BESTfit Remanufactured CAT Water Pump For Caterpillar C13 Engine Replaces 2285811, 3764216, US952

    BESTFIT TRUCK PARTS

    $569.99
    Remanufactured Water Pump By BESTfit Replaces 2285811, 3764216, US952 Fits Caterpillar C13Built for durability and cooling efficiency, the BESTfit Remanufactured CAT Water Pump replaces OEM...
    29-07120157
    SKU:
    29-07120157
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $569.99
    Qty in Cart: 0
    Price:
    $569.99
    Subtotal:
  • BESTfit CAT Water Pump For Caterpillar 3126E Engine Replaces 0451056, 7016X, 3522109

    BESTfit CAT Water Pump For Caterpillar 3126E Engine Replaces 0451056, 7016X, 3522109

    BESTFIT TRUCK PARTS

    $358.99
    CAT Water Pump By BESTfit Replaces 0451056, 7016X, 3522109 Fits Caterpillar 3126E EngineEnhance your engine cooling system with the BESTfit CAT Water Pump, a direct replacement for OEM part numbers...
    29-07120170
    SKU:
    29-07120170
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $358.99
    Qty in Cart: 0
    Price:
    $358.99
    Subtotal:
  • BESTfit CAT Water Pump For Caterpillar 3126E, C7 & C9 Engine Replaces 2601546, 2274300, G3522080

    BESTfit CAT Water Pump For Caterpillar 3126E, C7 & C9 Engine Replaces 2601546, 2274300, G3522080

    BESTFIT TRUCK PARTS

    $323.99
    CAT Water Pump By BESTfit Replaces 2601546, 2274300, G3522080 Fits Caterpillar 3126E, C7 & C9 EngineEnhance your engine cooling system with the BESTfit CAT Water Pump, a direct replacement for OEM...
    29-07120167
    SKU:
    29-07120167
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $323.99
    Qty in Cart: 0
    Price:
    $323.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins ISX/QSX 2002-2008 Engine Replaces 4089910RX, 6089, WP2258

    BESTfit Cummins Water Pump For Cummins ISX/QSX 2002-2008 Engine Replaces 4089910RX, 6089, WP2258

    BESTFIT TRUCK PARTS

    $469.99
    Water Pump By BESTfit Replaces 4089910RX, 6089, WP2258 Fits Cummins ISX/QSX 2002-2008Upgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120164
    SKU:
    29-07120164
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $469.99
    Qty in Cart: 0
    Price:
    $469.99
    Subtotal:
  • BESTfit Cummins Water Pump W/ 12 Groove Pulley For Cummins ISX/ISZ Engine Replaces 181956, 3687900, 5406044

    BESTfit Cummins Water Pump W/ 12 Groove Pulley For Cummins ISX/ISZ Engine Replaces 181956, 3687900, 5406044

    BESTFIT TRUCK PARTS

    $367.99
    Water Pump W/ 12 Groove Pulley By BESTfit Replaces 181956, 3687900, 5406044 Fits Cummins ISX/ISZ EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump with 12 Groove Pulley, a...
    29-07120153
    SKU:
    29-07120153
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $367.99
    Qty in Cart: 0
    Price:
    $367.99
    Subtotal:
  • BESTfit CAT Water Pump For Caterpillar C15 Non-Acert Engine Replaces 2282321, 4015, 6015

    BESTfit CAT Water Pump For Caterpillar C15 Non-Acert Engine Replaces 2282321, 4015, 6015

    BESTFIT TRUCK PARTS

    $568.99
    Water Pump Dome Gear Staright Cut Teeth By BESTfit Replaces 2282321, 4015, 6015 Fits Caterpillar C15 Non-Acert EngineUpgrade your engine cooling system with the BESTfit CAT Water Pump, a direct...
    29-07120163
    SKU:
    29-07120163
    Style Options:
    Caterpillar
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $568.99
    Qty in Cart: 0
    Price:
    $568.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins ISX Engine Replaces AK2883151, US318, G2883151

    BESTfit Cummins Water Pump For Cummins ISX Engine Replaces AK2883151, US318, G2883151

    BESTFIT TRUCK PARTS

    $236.99
    Water Pump By BESTfit Replaces AK2883151, US318, G2883151 Fits Cummins ISX EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120160
    SKU:
    29-07120160
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $236.99
    Qty in Cart: 0
    Price:
    $236.99
    Subtotal:
  • BESTfit CAT Water Pump For Caterpillar 3126 & 3116 Engine Replaces 20R0586, 4P3681, 2282318

    BESTfit CAT Water Pump For Caterpillar 3126 & 3116 Engine Replaces 20R0586, 4P3681, 2282318

    BESTFIT TRUCK PARTS

    $309.99
    Water Pump By BESTfit Replaces 20R0586, 4P3681, 2282318 Fits Caterpillar 3126 & 3116 EngineUpgrade your engine cooling system with the BESTfit CAT Water Pump, a direct replacement for OEM part...
    29-07120162
    SKU:
    29-07120162
    Product Type:
    Engine Parts
    Style Options:
    Caterpillar
    Make:
    Universal Items
    $309.99
    Qty in Cart: 0
    Price:
    $309.99
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  • BESTfit Detroit Diesel Water Pump For Detroit S50/S60 Engine Replaces 23539601, 99183, WP5026

    BESTfit Detroit Diesel Water Pump For Detroit S50/S60 Engine Replaces 23539601, 99183, WP5026

    BESTFIT TRUCK PARTS

    $444.99
    Water Pump By BESTfit Replaces 23539601, 99183, WP5026 Fits Detroit S50/S60 EngineUpgrade your engine cooling system with the BESTfit Detroit Diesel Water Pump, a direct replacement for OEM part...
    29-07120149
    SKU:
    29-07120149
    Style Options:
    Detroit
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $444.99
    Qty in Cart: 0
    Price:
    $444.99
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  • BESTfit Cummins Water Pump W/ Short Shaft For Cummins L10 Replaces 4972843, 4965417, 4972850

    BESTfit Cummins Water Pump W/ Short Shaft For Cummins L10 Replaces 4972843, 4965417, 4972850

    BESTFIT TRUCK PARTS

    $409.99
    Water Pump By BESTfit Replaces 4972843, 4965417, 4972850 Fits Cummins L10Upgrade your engine cooling system with the BESTfit Cummins Water Pump Short Shaft, a direct replacement for OEM part numbers...
    29-07120159
    SKU:
    29-07120159
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $409.99
    Qty in Cart: 0
    Price:
    $409.99
    Subtotal:
  • BESTfit Cummins Water Pump W/ Long Shaft For Cummins L10/M11 Engine Replaces 3068848, 3803260, 4965439

    BESTfit Cummins Water Pump W/ Long Shaft For Cummins L10/M11 Engine Replaces 3068848, 3803260, 4965439

    BESTFIT TRUCK PARTS

    $296.99
    Water Pump W/ Long Shaft By BESTfit Replaces 3068848, 3803260, 4965439 Fits Cummins L10/M11 EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump Long Shaft, a direct...
    29-07120156
    SKU:
    29-07120156
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $296.99
    Qty in Cart: 0
    Price:
    $296.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins N14 Engine Replaces 3076529, AW2090, WP5015

    BESTfit Cummins Water Pump For Cummins N14 Engine Replaces 3076529, AW2090, WP5015

    BESTFIT TRUCK PARTS

    $253.99
    Water Pump By BESTfit Replaces 3076529, AW2090, WP5015 Fits Cummins N14 EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120158
    SKU:
    29-07120158
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $253.99
    Qty in Cart: 0
    Price:
    $253.99
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  • BESTfit Cummins Water Pump For Cummins ISB/QSB Engine Replaces 182168, 5473174,5477736

    BESTfit Cummins Water Pump For Cummins ISB/QSB Engine Replaces 182168, 5473174,5477736

    BESTFIT TRUCK PARTS

    $246.99
    Water Pump By BESTfit Replaces 182168, 5473174,5477736 Fits Cummins ISB/QSB EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120155
    SKU:
    29-07120155
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $246.99
    Qty in Cart: 0
    Price:
    $246.99
    Subtotal:
  • BESTfit Cummins Water Pump Short Shaft For Cummins L10/M11 Engine Replaces 4087, 4955706,RW4077

    BESTfit Cummins Water Pump Short Shaft For Cummins L10/M11 Engine Replaces 4087, 4955706,RW4077

    BESTFIT TRUCK PARTS

    $296.99
    Water Pump Short Shaft By BESTfit Replaces 4087, 4955706,RW4077 Fits Cummins L10/M11 EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump Short Shaft, a direct replacement for...
    29-07120152
    SKU:
    29-07120152
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $296.99
    Qty in Cart: 0
    Price:
    $296.99
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  • BESTfit Cummins Water Pump W/ 88mm Pulley For Cummins 8.3L & 8.9L Engine Replaces 4089952, 5579022, 6410397

    BESTfit Cummins Water Pump W/ 88mm Pulley For Cummins 8.3L & 8.9L Engine Replaces 4089952, 5579022, 6410397

    BESTFIT TRUCK PARTS

    $166.99
    Water Pump W/ 88mm Pulley By BESTfit Replaces 4089952, 5579022, 6410397 Fits Cummins 8.3L & 8.9L EngineEnhance your cooling system with the BESTfit Cummins Water Pump with 88mm pulley, a direct...
    29-07120141
    SKU:
    29-07120141
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $166.99
    Qty in Cart: 0
    Price:
    $166.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins ISX/QSX Engine Replaces 3691299, 3692580, 4393548

    BESTfit Cummins Water Pump For Cummins ISX/QSX Engine Replaces 3691299, 3692580, 4393548

    BESTFIT TRUCK PARTS

    $479.99
    Water Pump By BESTfit Replaces 3691299, 3692580, 4393548 Fits Cummins ISX/QSX EngineUpgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120154
    SKU:
    29-07120154
    Product Type:
    Engine Parts
    Style Options:
    Cummins
    Make:
    Universal Items
    $479.99
    Qty in Cart: 0
    Price:
    $479.99
    Subtotal:
  • BESTfit Cummins Water Pump For Cummins 8.3L ISC/ISL/QSL Replaces 3802973, 6901245, A77579

    BESTfit Cummins Water Pump For Cummins 8.3L ISC/ISL/QSL Replaces 3802973, 6901245, A77579

    BESTFIT TRUCK PARTS

    $121.99
    Water Pump By BESTfit Replaces 3802973, 6901245, A77579 Fits Cummins 8.3L ISC/ISL/QSLUpgrade your engine cooling system with the BESTfit Cummins Water Pump, a direct replacement for OEM part numbers...
    29-07120147
    SKU:
    29-07120147
    Style Options:
    Cummins
    Product Type:
    Engine Parts
    Make:
    Universal Items
    $121.99
    Qty in Cart: 0
    Price:
    $121.99
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Adding your products to cart

Keep your Kenworth T2000 running cool and strong with engine and cooling parts designed to deliver top performance. Whether you're looking for air compressors and radiators or hoses and cooling fans, you'll find everything you need to maintain or upgrade your truck. With high-quality, OEM-style replacements, it's easy to keep your engine in peak condition and your rig ready for the road.

Frequently Asked Questions About Kenworth T2000 Engine Parts & Cooling

What year models of Kenworth T2000 are these engine cooling parts compatible with?

Our engine cooling parts are designed to fit Kenworth T2000 models from 1996 through 2004. However, compatibility can vary depending on your specific engine configuration. T2000s came with several engine options including Caterpillar C12, C13, C15, C16, Detroit Series 60, and Cummins ISX. Always verify your engine model and serial number before ordering to ensure proper fitment. If you're unsure, our customer service team can help you identify the correct parts using your OEM number.

How difficult is it to replace a radiator or water pump on a T2000, and what tools do I need?

Radiator replacement typically takes 3-5 hours for an experienced mechanic and requires basic hand tools, a coolant drain pan, and potentially a hoist for easier access. You'll need metric and standard socket sets, pliers for hose clamps, and a torque wrench for proper reassembly. Water pump replacement is more involved, usually requiring 4-6 hours, as you'll need to remove belts, pulleys, and sometimes the fan assembly. Many drivers report that accessing the lower radiator connections can be challenging due to the T2000's tight engine compartment. Having a creeper and good work lights makes the job significantly easier.

What's the difference between aluminum and plastic-tank radiators for the T2000, and which lasts longer?

Aluminum radiators with welded tanks typically last 8-12 years and handle temperature fluctuations better than plastic-tank units. Plastic-tank radiators usually cost 30-40% less but may only last 5-7 years before the tanks crack or separate at the crimped joints. Many T2000 owners prefer all-aluminum radiators for heavy-duty applications or hot climate operations. While plastic-tank radiators work fine for standard highway use, the aluminum units offer better long-term value despite the higher upfront cost.

Why is my T2000 running hot even after replacing the thermostat and coolant?

Overheating issues often involve multiple components beyond just the thermostat. Common culprits include a clogged radiator (even if it looks clean externally), a failing water pump that's not circulating coolant properly, or a damaged fan clutch not engaging at the correct temperature. Air pockets in the cooling system after service can also cause hot spots. Additionally, check for exhaust gas in the coolant system, which could indicate head gasket issues. The T2000's charge air cooler can also restrict airflow to the radiator if it's clogged with debris.

What are the most common cooling system failures on the T2000, and what parts should I keep on hand?

Based on driver reports, the most frequent failures include coolant hoses (especially the lower radiator hose that's exposed to road debris), thermostats sticking closed around 150,000-200,000 miles, and fan clutch failures causing overheating under load. Smart operators keep spare upper and lower radiator hoses, a thermostat, coolant temperature sensor, and extra coolant on hand. Belt tensioners and idler pulleys are also common failure points that can leave you stranded. Many experienced T2000 drivers recommend replacing all coolant hoses every 4-5 years as preventive maintenance, regardless of appearance.


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