Parts for your 2004 Toyota Altezza-Thermostat housing

2004 Toyota Altezza Thermostat Housing

Yes, the 2004 Toyota Altezza uses a thermostat housing. Technical references including the Toyota Electronic Parts Catalog (EPC) for SXE10/GXE10 and the factory Repair Manual cooling system section identify a dedicated housing (often labelled “water inlet/outlet”) for both the 1G‑FE (AS200) and 3S‑GE (RS200) engines. It secures the thermostat, seals the coolant path with a gasket or O‑ring, and provides hose and sensor mounting points.

On the Altezza, the thermostat housing’s job is to route coolant between the radiator and engine while the thermostat regulates operating temperature. Cold starts keep coolant inside the engine for faster warm‑up