OEM Part Number: 52030379AA, 52030379AB, 52030380AA, 52030380AB, 4766580AB, 4766580AA. 2011-2012 for Ram 1500 3.7L Gas/4.7L for Flex5.7L Gas. Easy Installation for You: It is very easy to install. Just take out the old cap, put on the new tank cap and screw it on clockwise.
