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The Mishimoto Aluminum Coolant Expansion Tank upgrades the stock reservoir on 2002–2007 Subaru WRX and 2004–2016 STI models. Constructed from TIG-welded aluminum with leak-free welded barb fittings, it increases capacity by 50 percent versus the factory plastic tank and offers polished silver or anodized black finishes to tidy the engine bay while matching Mishimoto radiators.
Mishimoto Subaru 02-07 WRX/ 04-14 STI WRX/STI Aluminum Coolant Expansion Tank
