Fits Kohler models CH18, CH20, CH22, CH23, CH25, CH26, CH620, CH621, CH640, CH641, CH670, CH680, CH682, CH730, CH732, CH735, CH740, CH742, CH745, CH750, CH752, CV17, CV18, CV20, CV22, CV23, CV25, CV620, CV624, CV640, CV670, CV675, CV680, CV682, CV724, CV725, CV730, CV732, CV740, CV742, ECH630, ECH650, ECH680, ECH730, ECH740, ECH749, ECV630, ECV650, ECV680, ECV730, ECV740, ECV749, EZT725, EZT740, FCV740, KT715, KT725, PCH680, PCH740, PCV680, PCV740, SV710, SV720, SV730, SV730, SV740, ZT710, ZT720, ZT730, ZT740. Yellow. If gasket is black use Part No. 24 153 23-S.