Improve Reliability and Durability
Mishimoto's Aluminum Coolant Expansion Tank is more durable, reliable and efficient than your stock component and it works with your OE overflow tank cap so you don't need anything else for installation. This innovative coolant expansion tank features a sight hole that allows for easy monitoring of hot and cold coolant levels. An internal baffle keeps your coolant near the overflow port during aggressive driving, preventing air entry into your coolant system.
100% Welded Aluminum Construction
Thanks to its ultra-durable 100% welded aluminum construction, Mishimoto's Aluminum Coolant Expansion Tank is way more durable than your stock tank, and it looks a heck of a lot better under the hood too. The tank is available in your choice of Black, Wrinkle Red or Wrinkle Nitrous Blue finish so that you can deck out your engine bay with a touch of custom style. The tank features an overflow nipple on the fill neck allowing for the installation of additional NHRA-mandated overflow reservoirs.
Fitment: 2013-2017 Focus ST/2016-2017 Focus RS
Warranty: This Aluminum Coolant Expansion Tank is backed by the Mishimoto Lifetime Warranty.