REBUILD KIT, Proportioning Valve, (3), for Kelsey-Hayes style valve, Late style seals, contains 3 internal seals required for a rebuild, it is recommended that you also purchase C5ZZ-2B091-K to obtain the additional external band seal and a new retainer clip, ** Note that these valves were originally assembled in clean rooms and every effort should be made to keep contaminates to an absolute minimum, Some have suggested that after a thorough cleaning and degreasing to dump everything in a container of fresh brake fluid and assemble the valve while submerged, **, See the instruction sheet on our website for identification and rebuild info

1965-1966 MUSTANG DISC BRAKES, LATE STYLE VALVE W/ ONE PIECE INNER PISTON

Note: Ford had two versions of proportioning valves on 65-66 - an early and late style. They are externally identical but different internally. This kit is for late style proportioning valves. Not returnable if opened.