This diesel exhaust fluid (DEF) filler neck matches the fit of an original filler neck that is leaking or has failed, and is designed to help ensure the reliable and secure transfer of DEF from the fill point to the DEF tank on specified vehicles. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford F-350 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016] - [Ford F-450 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016] - [Ford F-550 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016]

