One new original Ate clutch slave cylinder repair kit, part number 0450-2304;  for 23mm cylinders.  This fits:

Mercedes Benz 200D & 220D 1968 - 1976

Mercedes Benz 220 1968 - 1973

Mercedes Benz 230/4 1973 - 1976

Mercedes Benz 240D 1976

Mercedes Benz 230 1968 to chassis 110787

Mercedes Benz 250 1968 to chassis 077221

Mercedes Benz 250C & 250CE up to 1976