Upgrade your Subaru WRX STI’s cooling system with the Mishimoto Aluminum Coolant Expansion Tank, designed specifically for 2002–2007 WRX and 2004–2016 STI models. This premium replacement tank enhances engine bay reliability and style by swapping out the OEM plastic tank prone to cracking and leaks. Crafted from TIG-welded aluminum, it offers superior durability and a polished finish that complements Mishimoto’s performance radiators.

Featuring a 50% increased capacity over stock, this expansion tank helps maintain optimal coolant levels during high-performance driving and heat cycling. Barbed fittings ensure secure hose connections, and the tank fits perfectly with both stock and Mishimoto radiator caps. Installation is straightforward with no modifications needed, making it an ideal upgrade for Subaru enthusiasts seeking reliability and a clean engine bay look.

Perfect for Subaru owners who demand quality and performance, this Mishimoto tank is a smart investment in your vehicle’s cooling system. Shop now at Subimods and experience enhanced cooling and lasting durability.