Parts for your 2022 Subaru Impreza-Thermostat

2022 Subaru Impreza thermostat — purpose, servicing and when to replace

Technical sources confirm the 2022 Subaru Impreza is fitted with a conventional engine coolant thermostat. Subaru factory service information (STIS) for the GK/GT Impreza (FB20 engine) describes a wax‑pellet thermostat installed in the water inlet housing at the lower radiator hose/water pump side. Subaru genuine parts catalogues list a dedicated thermostat and seal for the 2.0‑litre FB engine, and major application guides from Gates and Dayco also specify direct‑fit replacements. So, yes — the thermostat is definitely used on the 2022 Impreza and it plays a critical role in temperature control.

The thermostat’s job is to help the engine warm up promptly, then hold it at the sweet‑spot temperature for efficiency, performance and emissions. When the coolant is cold, the valve stays shut to speed warm‑up under the bonnet