Heating and Cooling› Thermostats, Housings and Fillers

IAG Performance

Low Temperature Thermostat

$59.99

SKU: IAG-ENG-2311

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The IAG Performance Low Temperature EJ Thermostat is an upgrade for Subaru WRX (2002-2014) and STI (2004-2021) EJ series engines. This thermostat opens at 156°F (69°C), compared to the factory thermostat's 172.4°F (78°C), allowing coolant to circulate sooner for improved cooling efficiency. It helps prevent rapid engine heating, reduces the risk of detonation, and supports more reliable performance under heavy loads. The thermostat features a durable 304 stainless steel body and includes a gasket for a leak-free seal.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandIAG Performance
Part NumberIAG-ENG-2311
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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