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The Mishimoto aluminum coolant expansion tank for Subaru WRX/STI is a TIG-welded replacement tank engineered for 2002–2007 WRX and 2004–2016 STI applications. Constructed from aluminum with welded barb fittings, it increases capacity by approximately 50% versus the stock plastic unit and is offered in polished silver or anodized black to match Mishimoto radiators while providing a durable, long-lasting service option.
Mishimoto Subaru 02-07 WRX/ 04-14 STI Aluminum Coolant Expansion Tank - Black
