Glacier Diesel Power -6 AN x 12mm Stainless Adapter Fitting. Fits: 1994 - 2002 Ram 5.9L Cummins; 1998.5 - 2002 Ram 5.9L 24-Valve Cummins; 2003 - 2004 Ram 5.9L Cummins; 2004.5 - 2007 Ram 5.9L Cummins; 2007.5 - 2009 Ram 6.7L Cummins; 2010 - 2018 Ram 6.7L Cummins.