Aeroflow Subaru EJ20 & EJ25Hi-Flow Thermostat, 160CF (71CC) 160CF Opening Temperature Rating, Made From Copper/Steel

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Thermostats play a vital role in engine management. Thermostats can fail in 2 possible manners; open or close position. If stuck open,the engine's heater will operate at reduced ef ficiency for an extended period of timeor if stuck shut, will cause your car’s engine to overheat leading to costly repairs or ultimately “complete engine failure”. Aeroflow Performance offer a range of thermostats to suit a wide variety of makes and models, all featuring a lower opening temperature compared to their OEM counterparts. Reducing thetemperature which an engine runs will make more power through better thermal and volumetric efficiency. These thermostats are a direct drop in with no modifications. Show more