This bracket mounts a UMP air filter on the passenger side fender well. Don't let your Cummins suffer from poor filtration, the UMP aluminum housing contains an industrial Donaldson filter sized for the 5.9.  Some slight "massaging" of the inner fender with a mallet will be required, as will welding one of the supplied tabs in the final mounting position.  Supplied in bare steel, they will need paint or other finishing after install.  It is designed around the '81 and up core supports,  in stock and ready to ship!