Add some additional reliability and engine bay styling with the Mishimoto Subaru 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 50% increase in capacity compared to the stock unit. It is engineered for perfect fitment and features a polished silver or anodized black finish that will look great in your engine bay! As with all their products, this expansion tank includes the Mishimoto Lifetime Warranty.