This water pump circulates coolant through the engine block and radiator to maintain stable operating temperature in the host tractor. It is driven by the engine's accessory belt and moves fluid from the lower radiator hose into the water jacket around the cylinders. A failing pump typically produces a coolant leak from the weep hole or a bearing noise that increases with engine speed. The pump is manufactured by Keba, which supplies the original equipment geometry so the impeller clearance and seal depth match the housing without modification. On installation, use a new gasket and tighten the mounting bolts to the torque specification for the engine block.