Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:MN50-250C 230/400-50 IE3 20HP (QF400175040Z),MN50-250C 400/690-50 20HP IE3 (QF400175060Z),MN50-250B 230/400-50 IE3 25HP (QF400255040Z),MN50-250B 400/690-50 25HP IE3 (QF400255060Z),MN50-250A 230/400-50 IE3 30HP (QF400305040Z),MN50-250A 400/690-50 30HP IE3 (QF400305060Z),MA50-250C 50Hz (PF40017),MA50-250B 50Hz (PF40025)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.