You’ve seen them on the racetrack, at music festivals, at sporting events, and now, you can bring some Rockstar energy to your Subie. Add some additional reliability and engine bay styling to your 2008-2014 Subaru WRX with this Rockstar Aluminum Coolant Expansion Tank by Mishimoto. Stock coolant expansion tanks are prone to failure after years of constant temperature variations. This Rockstar tank is constructed from durable, TIG-welded aluminum with barbed fittings for optimal durability and longevity. Providing a 22% increase in coolant capacity compared to the stock unit, this tank features an anodized black finish and a Rockstar -branded cap that will energize your engine bay with some killer style. The Rockstar Coolant Expansion Tank is engineered for perfect fitment in the 2008–2014 WRX. As with all our products, this expansion tank includes the Mishimoto Lifetime Warranty — we want to make sure that nothing stops you or your car from partying like a Rockstar .