IAG Coolant Expansion Tank Black - 2002-2007 Subaru WRX / STI PDM_shifter-bushings Improves throttle response

Improves throttle response

Mishimoto’s Exhaust is constructed with high-quality SUS304 stainless steel

FLANGE DIAMETER: 4

all while saving weight

IAG Coolant Expansion Tank Black - 2002-2007 Subaru WRX / STI PDM_shifter-bushings Improves throttle responseOver time and mileage, your factory coolant expansion tank could develop a pressure crack due to expansion because of multiple heat cycles. Additionally, it's not the most pleasing component to look at. The IAG Performance replacement features thick aluminum construction and will provide a more streamlined race inspired look in the engine bay. Note that this unit will relocate your stock overflow tank to the passenger side front strut tower brace to