Cobb Tuning Subaru Coolant Overflow Tank with Washer Fluid Relocation Kit STI / WRX 2004-2007 - 800630EMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION This is the same Coolant Overflow Tank + Washer Reservoir filler combo that is included with our 2004 2007 WRX and STI Front Mount Intercooler Kits. As a stand alone item it helps to clean up the engine bay and tuck the over flow tank lower and out of sight. Constructed of aluminum and powder coated in a wrinkle black finish