Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:FV550-4T 3x400-50 (PF660455063Z),FM550-4T 230/400-50 (PF650455040Z),FM550-4T 400/690-50 (PF650455060Z),FM550-4T 3x400-50 (PF650455063Z),FM750-4T 230/400-50 (PF650475040Z),FM750-4T 400/690-50 (PF650475060Z),FM750-4T 3x400-50 (PF650475063Z),FV550-4T 3x400-50 (PF660455063Z),FV750-4T 230/400-50 (PF660475040Z),FV750-4T 400/690-50 (PF660475060Z),FV750-4T 3x400-50 (PF660475063Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.