Mishimoto 2013+ Ford Focus ST/2016+ Focus RS Aluminum Expansion Tank - Wrinkle Blue

This Mishimoto expansion tank is made from TIG-welded aluminum, offering better durability than the stock plastic tank that can fail over time due to temperature changes. It comes in a Wrinkle Blue finish to add some style to your engine bay. The tank includes internal baffles designed to keep coolant near the overflow port, even during hard braking, acceleration, or high-speed cornering. This helps prevent air from entering the coolant system, which can cause overheating. A built-in sight tube makes it easy to check both hot and cold coolant levels, simplifying maintenance.

The stock expansion tank cap can be reused with this Mishimoto tank. It also features an overflow nipple on the fill neck, allowing for the addition of an extra coolant tank if needed. Installation is straightforward and can typically be completed in under an hour, as it's designed to fit right into your Ford Focus ST (2013-2018) or Focus RS (2016-2018). This expansion tank is a solid option for improving the reliability and appearance of your cooling system.