The components in this fuel injector O-ring kit are designed to match the fit of the original O-rings on specified vehicles. They are engineered to help ensure leak-free connections to the fuel injectors during service or when the rings are damaged. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford F-250 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [Ford F-350 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [Ford F-450 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019] - [Ford F-550 Super Duty: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019]