Genuine (OEM) WaterWall spray arm motor DD31-00013B turns the belt to move the WaterWall spray arm forward and backward inside the tub This part is compatible with models including; DW80J7550UW/AA-01, DW80J7550UW/AA-00, DW80H9930MO/AA-00, DW80H9950US/AA-00, DW80H9950US/AA-01, DW80H9930US/AA-01, DW80H9930US/AA-00, DW80M9550UG/AA-00, DW80H9970US/AA-02, DW80M9960UG/AA-00, DW80H9970MO/AA-00, DW80H9970US/AA-01, DW80J7550US/AA-00, DW80H9970US/AA-00, DW80J7550US/AA-01, DW80J9945US/AA-00, DW80J9945US/AA-01, DW80M9550US/AA-00, DW80H9940US/AA-00, DW80J7550UG/AA-02, DW80H9940US/AA-01, DW80J7550UG/AA-01, DW80J7550UG/AA-00 This WaterWall spray arm motor (part number DD31-00013B) is a motor of the assemgly DD97-00216A Package Included : x1 ea (Bulk Packaged) Genuine (OEM) WaterWall spray arm motor DD31-00013B is for Various Samsung dishwashers. This motor turns the belt to move the WaterWall spray arm forward and backward inside the tub.