Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:MN65-250B 230/400-50 IE3 40HP (QF410405040Z),MN65-250B 400/690-50 IE3 40HP (QF410405060Z),MN65-250A 230/400-50 IE3 50HP (QF410505040Z),MN65-250A 400/690-50 IE3 50HP (QF410505060Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.