Parts for your 2014 Subaru Exiga-Thermostat housing

2014 Subaru Exiga Thermostat Housing: What It Does and How to Look After It

Yes, the 2014 Subaru Exiga uses a thermostat housing. Technical documentation backs this up: the Subaru YA Exiga Factory Service Manual (Cooling System section) shows the thermostat seated in the water inlet bolted to the front of the engine, and the Subaru FAST electronic parts catalogue (Group 21 – Radiator/Water Pump) lists the thermostat, gasket and water inlet (housing) for 2014 Exiga variants, including EJ20/EJ20 turbo and FB25 engines. Subaru service information (STIS) procedures also reference removing the water inlet to service the thermostat on these engines.

On this model, the thermostat housing (often called the water inlet) is the elbow-shaped piece where the lower radiator hose meets the engine. Its job is to keep the thermostat sealed and correctly positioned so coolant flow is regulated as the engine warms. Until the engine’s up to temp, the thermostat stays shut, helping it reach operating temperature quickly. Once there, it opens to let coolant circulate through the radiator, keeping things steady and preventing overheating.

For an Exiga that’s doing school runs or long Kiwi and Aussie highway stretches, a healthy housing and thermostat mean stable temps, better heater performance on chilly mornings and solid fuel economy. The housing itself is usually alloy or high-temp composite