Replacement For Sloan C-100500-K Flushmate Cartridge/Powerflush Toilet Piston

Compatible with Flushmate systems: Flushmate I - 501/501A Flushmate II - 501B Flushmate III - 503 Flushmate IV - 504 Included Parts: (1) Lower Supply Filter Screen (1) Flushmate Cartridge Assembly (1) Duckbill Valve Fits Sloan series 500, 501, 501A, 501B, 503 and 504 Pressure Assist tank systems , or Flushmate M-101526-F3,M-101526-F4 Pressure Assist tank systems