This differential ring and pinion directly replaces the original equipment on specific vehicle years, makes and models. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Express 3500: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Chevrolet Express 4500: 2009, 2010, 2011, 2012, 2013] - [Chevrolet Silverado 2500 HD: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Chevrolet Silverado 2500: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Chevrolet Silverado 3500 HD: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [Chevrolet Silverado 3500: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012, 2013] - [Dodge Ram 2500 Van: 2003] - [Dodge Ram 2500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Dodge Ram 3500: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [GMC Savana 3500: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [GMC Savana 4500: 2009, 2010, 2011, 2012, 2013] - [GMC Sierra 1500: 2001] - [GMC Sierra 2500 HD: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [GMC Sierra 2500: 2001, 2002, 2003, 2004] - [GMC Sierra 3500 Classic: 2007] - [GMC Sierra 3500 HD: 2007, 2008, 2009, 2010, 2011, 2012, 2013] - [GMC Sierra 3500: 2001, 2002, 2003, 2004, 2005, 2006] - [Ram 2500: 2011, 2012, 2013] - [Ram 3500: 2011, 2012, 2013]