Add some additional reliability and engine bay styling with the Mishimoto Subaru WRX 2008-2014 Aluminum Coolant Expansion Tank. Stock coolant expansion tanks are prone to failure after years of constant temperature variations. The Mishimoto tank is constructed from durable, TIG-welded aluminum with barbed fittings for optimal durability and longevity. This expansion tank provides a 22-percent increase in capacity compared to the stock unit. It features a polished or anodized black finish that will look great in your engine bay, and it matches the Mishimoto Subaru WRX/STI Performance Aluminum Radiator. The Mishimoto Coolant Expansion Tank is engineered for perfect fitment in the 2008-2014 WRX and also fits the 2005-2009 Subaru Legacy GT / Outback XT! As with all of our WRX performance parts, this expansion tank includes the Mishimoto Lifetime Warranty.