The original Pentax spare part is for Pentax and Foras water pumps. Suitable for the pump models: MN100-160B 400/690-50 IE3 40HP (QF430405060Z), MN100-160A 400/690-50 IE3 50HP (QF430505060Z), FC410T 3x230-50 (PF670280030Z), FC410T 3x400-50 (PF670280040Z) , FC560T 3x230-50 (PF670290030Z), FC560T 3x400-50 (PF670290040Z), FTR400T 3x230-50 (PF680240030Z), FTR400T 3x400-50 (PF680240040Z), FTR400T 230/400-50 (PF680240042Z), FTR550T 3x230-50 (PF680255030Z), FTR550T 3x400-50 (PF680255040Z), FM1000T 230/400-50 (PF650210040Z), F M1000T 400/690-50 (PF650210060Z), FM1000T 3x400-50 (PF650210063Z),F M410T 3x400-50 (PF650240040Z),F M560T 3x230-50 (PF650256030Z),FM560T 3x400-50 (PF650256040Z),FV1000T 230/400-50 (PF660210040Z),FV1000T 400/690-50 (PF660210060Z),FV1000T 3x400-50 (PF660210063Z),FV400T 3x230-50 (PF660240030Z),FV400T 3x400-50 (PF660240040Z),FV550T 3x230-50 (PF660255030Z),FV550T 3x400-50 (PF660255040Z),FV750T 230/400-50 (PF660275040Z),FV750T 400/690-50 (PF660275060Z),FV750T 3x400-50 (PF660275063Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.