Mishimoto 11-14 Ford F-150 Aluminum Expansion Tank - Micro-Wrinkle BlackAnyone who's ever worked on an aging vehicle knows how brittle plastic pieces in the engine bay become. But, the stock 2011 2014 F 150 expansion tank probably won't last long enough for you to have to worry aging plastic. If you're like many 2011 2014 F 150 owners, you've already replaced your expansion tank a few times due to a leaking quick disconnect fitting on the bottom of the tank. Mishimoto's solution? Start by making the tank out of stronger