Note: Install washer with lip facing piston seat.
Shims may not be included in this kit. If not included, they are not required. If included, they must be installed above and below the spring. Kit is for use on all single cartridge dryers with U.S. (NPTF) ports.
Kit Contents: O-Rings, Washer, Piston Assembly, Shims, Spring, Valve Head, Retainer Ring.
Includes everything you need to rebuild the Meritor WABCO System Saver 1200 purge valve.