This new WABCO air suspension compressor for the 2014-2021 Ram 2500 (DJ) and 3500 (D2), Arnott part P-3480, is designed to replace the OE compressor. This unit is the same one used by Ram and includes new airline fittings, powder-coated mounting brackets and power harnesses with a thermal resistor for a fast plug & play installation. The compressor comes with a dryer and new compressor relay.