This OEM Safety Kit replacement part was specifically designed for your 2011 Ram 5500 Chassis Cab. It goes through rigorous testing to assure peak performance and safety while maintaining strict FCA quality requirements. Rest assured part number 82212727AB is of original FCA quality, supplied by the same people who engineered your vehicle and covered by the Mopar warranty. Mopar is the original equipment parts supplier for Chrysler, Dodge, Jeep, Ram and Fiat vehicles.