Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:FM750-4T 400/690-50 (PF650475060Z),FM750-4T 3x400-50 (PF650475063Z),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.