Aeeroflow Performance has constructed this durable, TIG-welded aluminium coolant expansion tank for perfect fitment in the 2002-2007 WRX and the 2004-2016 STi. Stock coolant expansion tanks are prone to failure after years of constant temperature variations; the plastic material becomes brittle. Our Fabricated tank features barbed fittings and a 50% increase in capacity compared to the factory. The barb fittings are removable and can be replaced for AN style fittings which are sold separately. 

Tank Dimensions

• Length: 110mm
• Width: 110mm
• Height: 97mm
• Replacement Cap: AF64-5032BLK

Fittings

• 2x -8 ORB to 1/2" Barb
• 1x -6 ORB to 3/8" Barb
• 1x 1/8" NPT to 3/8" Barb 

Capacity: 0.77 Litres