Kit, HP Check Valve Repair, Inlet-Outlet, .875 Plunger, 60K. Also used on late model Neoline units with a poppet style inlet. Each 72185957 Repair Kit contains 1 each of the following parts: 05112768 Seat, 05116561 Discharge Poppet, 05116751 Poppet Pin, 05147863 Compression Spring, 20453619 Inlet Poppet and 20474395 Retainer Screw. Same as 20489495 except kit does not contain ADH Threadlocker. KMT GENUINE PART