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The IAG Performance custom aluminum coolant expansion tank is designed for car builders seeking a race like engine bay for their 2004-07 Subaru WRX or STI. By relocating the coolant expansion tank from the intake manifold to the passenger side front strut tower the builder can create additional space for rotated turbo kit piping.
Made from 1/8" thick sheet metal aluminum that is precision waterjet cut, bent and tig welded with a -8 AN coolant turbo return fitting, -8 AN drain outlet fitting and .25" barb fitting for the overflow. The tank includes two integrated mounting brackets along with the supplied hardware for an easy installation. Each IAG tank is powder-coated in either red or black and features the IAG logo laser engraved on the side.
IAG's custom aluminum expansion tank is designed to reuse your OEM coolant expansion tank cap.
Vehicle Fitment
- 2002 - 2007 Subaru WRX
- 2004 - 2007 Subaru STI
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| SKU | IAG-ENG-5301 |
|---|---|
| Brand | IAG Performance |






