This engine crankshaft seal retainer is engineered to secure the rear main seal on specified vehicle years, makes and models, and to match the fit and function of an original retainer that is leaking or has failed due to seal deterioration. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Dodge Ram 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Dodge Ram 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Dodge Ram 4000: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Dodge Ram 4500: 2008, 2009, 2010] - [Dodge Ram 5500: 2008, 2009, 2010] - [Ram 2500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Ram 3500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Ram 4000: 2011, 2012, 2013] - [Ram 4500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021] - [Ram 5500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021]