Air End Repair Kit, Compatible with Grainger Part Number 2CAP4, 2CAP5, 2CAP6, Compatible with Manufacturer Model Number 666053-344, 666053-388, 66605J-344, Includes Air Valve Retaining Rings, U-Cups, Product Type Air End Repair Kit, Compatible Connection Media Type Air, Compatible with Pump Type Air Operated Double Diaphragm Pump, Number of Gaskets 2, Number of O-Rings 7, Number of Seals 11, Compatible with Brand ARO. This item has been restricted from sale in the following state (s): []