Mini Excavator Water Pump 119620-42022 Direct-Fit for Komatsu 3D74E Engines

Stop the Leak: Fast-Track Cooling Repair for Komatsu 3D74E

When your 1.5 to 1.8-ton Komatsu mini excavator starts leaving puddles of coolant on the job site or the temperature gauge spikes during heavy trenching, a failed water pump mechanical seal is usually the culprit. Delaying this repair leads to blown head gaskets and catastrophic engine failure. The 119620-42022 Water Pump is engineered for mechanics and operators who need to fix the leak permanently and get the machine back in the dirt without fighting poor fitment.

The Mechanic's Choice: Why This Pump Works

• Zero-Modification Bolt-On Fit: Don't waste billable hours modifying bolt holes. This aftermarket pump is an exact 1:1 replacement for OEM part numbers 119620-42022, 119620-42021, and 119620-42023. It matches the Komatsu 3D74E and Yanmar 3TNE74 engine blocks perfectly, ensuring flawless gasket alignment.

• Upgraded Leak-Free Seal: The most common failure point on mini excavator water pumps is the internal mechanical seal. This unit features an upgraded, severe-duty seal assembly designed to withstand high RPMs, aggressive coolant mixtures, and the extreme vibration of compact earthmoving equipment.

• Maximum Heat Dissipation: Equipped with a precision-cast impeller that matches OEM flow rates, preventing block hot-spots and ensuring your compact excavator stays cool even when running hydraulic breakers or augers in the summer heat.

Quick Fitment Verification Guide

Check your engine tag or machine model below to confirm compatibility before ordering:

• Primary Replacement Number: 119620-42022 (YM119620-42022)

• Direct Interchange Numbers: 119620-42021, 119620-42023, 119620-42024

• Engine Compatibility: Komatsu 3D74E Series / Yanmar 3TNE74, 3TNV74

• Komatsu Mini Excavators: PC18MR-2, PC18MR-3, PC15R-8, PC15MR-1

• Component Type: Engine Coolant Water Pump Assembly

• Installation: Direct Bolt-on

• Condition: 100% Brand New, Ready for Immediate Dispatch