8-97251184-1 Engine Water Pump Fits 4BD1 4BG1 Diesel Engine Hitachi EX100 EX120 Kobelco SK100 Excavator

Cross Reference Part Numbers

Compatible Engine & Equipment Models

• Engine: Isuzu 4BD1, 4BG1 Diesel Engines
• Excavator: Hitachi EX90, EX100, EX100-2, EX100-3, EX120; Kobelco SK100; Sumitomo SH100
• Other Equipment: Industrial forklifts, stationary diesel generator sets

Wide Application Range

• Hitachi, Kobelco, Sumitomo medium-sized hydraulic excavators
• Industrial diesel forklifts, agricultural engineering machinery
• Stationary industrial standby diesel generator sets
• Light commercial vehicles, municipal engineering equipment
•  

Key Product Features

1. 1:1 OEM Standard Mounting Flange & Pipeline Interface: Fully consistent with original installation hole position, inlet and outlet pipe thread, plug-and-play bolt-on installation without pipeline modification, greatly shortening equipment maintenance downtime. Comes with matched mounting gasket to avoid installation water leakage.

1. High-Strength Cast Iron Pump Body: Strong compression and deformation resistance, rust and oil mist corrosion resistant, suitable for long-time continuous heavy-load operation of engineering equipment.

1. Precision Wear-Resistant Impeller + Double High-Temperature Mechanical Seal: Ensures large stable coolant circulation flow, effectively prevents shaft end coolant leakage, reduces frequent antifreeze replenishment and maintenance costs.

1. High-Quality Heavy-Duty Bearing Assembly: Low running noise, strong anti-vibration performance, effectively avoids abnormal front-end squealing and premature pump failure caused by bearing wear.

1. Strict Factory Quality Inspection: Each water pump passes water pressure leakage test, dynamic balance and high-low temperature aging endurance tests to guarantee long-term stable heat dissipation performance.

Common Equipment Failures Solved

• Engine high temperature alarm frequently triggered during climbing, heavy load and long-time continuous operation
• Coolant leaks from the water pump shaft seal, frequent loss of antifreeze and increased maintenance costs
• Abnormal squealing noise from the engine front end, accompanied by belt vibration and abnormal wear
• Impeller aging leading to insufficient coolant circulation, slow engine warm-up, high fuel consumption and black exhaust smoke
• Water pump stuck causing sudden engine overheating, resulting in cylinder head deformation and serious engine mechanical damage