Buy 2018 Subaru WRX Engine Coolant Thermostat Housing. Water Neck. Cover Complete Thermostat Case - OEM Subaru Part # 11054AA000

Engine Coolant Housing where a Thermostat is used but not included. MPI and B.

COVER COMPLETE-THERMO CASE Engine Coolant Thermostat Housing

Fits GL, GL10, Loyale, RS, RX, XT

Engine Coolant Thermostat Housing
A failed thermostat housing will likely result in a cooling system leak, or will cause the engine in your Subaru to overheat. Consider replacing your engine coolant thermostat or having our staff of expert techs handle it for you.