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Subaru WRX Rockstar® Aluminum Coolant Expansion Tank, 2008–2014

Subaru WRX Rockstar® Aluminum Coolant Expansion Tank, 2008–2014
Subaru WRX Rockstar® Aluminum Coolant Expansion Tank, 2008–2014
Subaru WRX Rockstar® Aluminum Coolant Expansion Tank, 2008–2014

Regular Price: $270.40

Sale Price $202.95

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Installation Difficulty

  • Direct fit for the 2008–2014 Subaru WRX and 2005–2009 Subaru Legacy GT
  • 22% greater capacity than stock plastic expansion tank
  • All-aluminium, fully welded construction for maximum durability during repeated cold and hot transitions
  • Leak-free welded CNC barb fittings
  • Fits with Mishimoto Subaru WRX Front-Mount Intercooler Kit
  • Rockstar® branded radiator cap
  • Durable anodized black finish
  • Mishimoto Lifetime Warranty

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®.

Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.



Overall Height 4.88"

Overall Width 4"

Capacity 566 cc

Purchase Includes (1) Aluminum Expansion Tank
(1) Rockstar® Radiator Cap
(1) Lifetime Warranty

Fits 2008–2014 Subaru WRX
2005–2009 Subaru Legacy GT
2005–2009 Subaru Outback XT
2009–2014 Subaru Forester XT

Engine Codes EJ205

Material Aluminum

Note This expansion tank may not fit with the stock air intake "S" hose, an aftermarket intake is recommended for the best fit. Mishimoto offers both the Performance Air Intake, and Performance Race Intake which are perfect for this application!

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