Mishimoto's aluminum expansion tank for 2015–2020 Ford F-150 replaces the OEM plastic reservoir with a fully welded, 100-percent aluminum unit in a natural finish. Internal baffles keep coolant near the overflow port during aggressive driving to prevent air entry, and a sight glass allows quick level checks. The tank is a durable aesthetic upgrade intended to resist the brittleness of plastic OEM parts and to simplify monitoring coolant level.
Mishimoto 2015+ Ford F-150 Aluminum Expansion Tank - Natural Finish