905188 (Febco) | 4 Inch | 860 RP Total Rubber KitThis Complete Rubber Repair Kit Includes The Parts Necessary to Repair or Replace All The Rubber Parts of a 4 Inch Reduced Pressure Zone Assembly, Series 860. Kit Includes 6 O Rings, 2 Jam Nuts, 2 Washers, Outer & Inner Diaphragm, Relief Valve Seat Disc, 2 Check Disc Assemblies, 2 Seat Ring Gaskets, Sensing Line Gasket, 4 Bulkhead Gaskets, 2 Bearing Sockets, And RV Collar. All Parts Are Genuine And Original to The Valve. Febco 905188