Mopar Nut Hex Flange Lock - 55366000AA Fits: 2003-2007 Dodge Ram 1500, 2003-2007 Dodge Ram 3500 Gas Engine,2003-2007 Dodge Ram 2500 Gas Engine,2004-2007 Dodge Durango Genuine Mopar Exhaust Flange Lock Nut Fits: 2003-2007 Dodge Ram 1500, 2003-2007 Dodge Ram 3500 Gas Engine,2003-2007 Dodge Ram 2500 Gas Engine,2004-2007 Dodge Durango Package of 4