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 Percent increase in capacity compared to the stock unit. It features a polished silver or anodized black finish that will look great in your engine bay.Mishimoto provides free replacement for accidental damages, basically if you are in an accident and your mishimoto part is damaged, they will replace it free of charge when you provide pictures and a police report.