Toyota 16100-09440 Engine Water Pump Assembly

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First of all, you should note that coolant is available at auto parts stores. For 2006 and earlier models, you should disconnect the battery, and remove the timing belt, camshaft sprockets, water inlet pipe, thermostat, and timing belt cover. Also, remove the water pump, clean the surfaces, and remove old gaskets, sealer, and O-rings. For installation, install the water pump with a metal and rubber gasket, reinstall the pump and parts, and tighten the bolts. For 2007 and later models, remove the engine/transaxle assembly, alternator, and air conditioning compressor. Remove the engine mount bracket, drive belt idler pulley assemblies, and drive belt tensioner.

Refill the cooling system, run the engine, and check for leaks and proper operation.

Remove the engine/transaxle assembly.

If the water pump shaft bearings fail, there may be a howling sound at the front of the engine while it is running. Bearing wear can be felt if the water pump pulley is rocked up and down.

Updated part number is 16100-09442 which comes with the gasket.