Dorman's Diesel Emissions Fluid Filler Cap effectively prevents diesel exhaust fluid from leaking or spilling through the filler neck. Integral for helping to keep pollutants out of the environment, replacement restores the diesel emissions fluid system to proper operation.Vehicle model years this part fits:Mack CHU: 2009, 2010, 2011, 2012, 2013 Mack CXU: 2009, 2010, 2011, 2012, 2013 Mack GU7: 2009, 2010, 2011, 2012, 2013 Mack GU8: 2009, 2010, 2011, 2012, 2013 Mack LEU: 2009, 2010, 2011, 2012, 2013 Mack MRU: 2009, 2010, 2011, 2012, 2013 Mack Pinnacle: 2009, 2010, 2011, 2012, 2013 Mack TD700: 2010, 2011, 2012, 2013

