Aluminum Coolant Reservoir Tank

The SPELAB Coolant Reservoir is an aluminum expansion tank engineered as a direct replacement for the stock plastic unit in select Subaru vehicles. Over time, the factory plastic reservoir can degrade, becoming fragile and hazy, which increases the risk of leaks and obstructs visibility of the coolant level. This SPELAB replacement is constructed from robust 6061 aircraft-grade aluminum, utilizing TIG welding and pressure testing to ensure maximum strength and durability. Unlike the two-piece plastic factory tanks, SPELAB's fabrication method avoids stress points, thereby preventing cracking and leaks. The aluminum construction also aids in heat dissipation, potentially improving system performance and longevity. Compatibility is maintained with the factory cap, and an included sight glass allows for easy coolant level checks. Installation is straightforward, requiring only basic tools and approximately 30 minutes, making it a direct, easy-to-install upgrade for your stock reservoir. Manufactured in-house at SPELAB's facility, stringent quality control measures are applied throughout the production process, from cutting to welding, to guarantee years of reliable performance. This coolant expansion tank is specifically designed to fit the 2008-2014 Subaru WRX, 2005-2009 Subaru Legacy GT, and 2005-2009 Subaru Outback XT models.