Applicability: For Ford Super Duty F-250, F-350, F-450 and F-550 with 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020 model year 6.7L Power Stroke Diesel engines. Fits 2016, 2017, 2018, 2019 and 2020 model year Ford Super Duty F-650 and F-750 with 6.7L Power Stroke diesel engine. PLEASE NOTE: 303-1509-01 is not required when using this newly revised tool.Use the included adapter ring (BC3Z-6700-A seal) on 2011-2019 models only. Do not use the adapter ring when working on 2020 and newer models (LC3Z-6700-A seals).