Toyota 16100-78003-71 Water Pump Assembly

The Toyota 16100-78003-71 water pump assembly is a genuine OEM component designed for the Toyota 4P 2.4L LPG/gasoline engine. It utilizes a centrifugal impeller driven by the engine timing belt to maintain optimal coolant flow through the engine block and radiator. The housing is precision-cast aluminum with a pressed-in steel bearing and ceramic-carbon mechanical seal. This unit includes the mounting gasket and is a direct replacement for the factory-installed pump on specified Toyota internal combustion forklift models. Fitment covers Toyota 3FG25, 4FG25, 4FG20, and 3FG20 forklift series equipped with the 4P engine. The pump interfaces with the engine block via a four-bolt flange pattern and connects to the lower radiator hose and bypass circuit. Regular inspection of the weep hole for coolant leakage indicates seal wear and impending failure. Replacement interval typically aligns with major engine service or timing belt replacement schedules.