This axle shaft O-ring matches the fit and function of the original equipment O-ring to maintain a tight seal between the wheel hub and the axle housing. Made of quality materials, this O-ring should be replaced whenever the axle is serviced. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Dodge Ram 4500: 2008, 2009, 2010] - [Dodge Ram 5500: 2008, 2009, 2010] - [Ford F-450 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [Ford F53: 1999, 2000, 2001, 2002, 2004, 2006, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [Ford F-550 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [Ram 4500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018] - [Ram 5500: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018]