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Direct fit for the 2002–2007 Subaru WRX and 2004–2016 Subaru WRX STI
50% greater capacity than stock plastic expansion tank
100% aluminum, fully-welded construction for maximum durability during repeated cold and hot transitions
Leak-free welded barb fittings
Rockstar® branded radiator cap
Durable anodized black finish

You’ve seen them on the racetrack, at music festivals, at sporting events, and now, you can bring some Rockstar® energy to your Subaru. Add some additional reliability and engine bay styling to your 2002-2007 Subaru WRX or 2004-2016 STi with this Rockstar® aluminium 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 aluminium with barbed fittings for optimal durability and longevity. 

Providing a 50% 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 2002–2007 WRX and the 2004–2016 STI. 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®.