IAG 167 Degree Low Temperature Thermostat (2015+ WRX, 2013+ BRZ)

THE IAG 167 DEGREE LOW TEMPERATURE FA THERMOSTAT

For Subaru owners pushing their 2015+ WRX and 2013+ BRZ FA series engine to the limit, the IAG 167 Degree Low Temperature FA Thermostat is a smart upgrade. Unlike the factory thermostat, which doesn’t open until 190.4°F (90°C), this unit starts opening at 167°F (75°C), improving cooling efficiency by allowing coolant to flow earlier. By lowering operating temperatures, it helps prevent heat soak and improves thermal management—ideal for high-performance driving where maintaining optimal engine temps is crucial.

ENGINEERED FOR PERFORMANCE

By allowing coolant to circulate earlier, a low-temperature thermostat helps to keep the engine from heating up too quickly. This is a big advantage for engines that see heavy loads, preventing sudden spikes in heat. A cooler engine can also mean better efficiency and less risk of detonation, allowing for stronger, more reliable performance.

PREMIUM-GRADE FA THERMOSTAT

The IAG 167 Degree Low Temperature FA Thermostat is engineered for durability, featuring a 430 stainless steel flange to resist corrosion. This direct-fit replacement stands up to demanding conditions and includes the necessary gasket for a secure, leak-free seal to the thermostat housing. Every detail, from the laser-etched finish to the IAG corporate logo is a reflection of the high quality engineering and construction behind this component.