Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:P 18V-450/5T 230/400-50 IE3 (QF510185040Z),P 18-400/4T 230/400-50 IE3 (QF500184040Z),P 18V-400/4T 230/400-50 IE3 (QF510184040Z),P 18V-450/5T 230/400-50 IE3 (QF510185040Z),P 18V-550/6T 230/400-50 IE3 (QF510186040Z),P 18V-750/8T 230/400-50 IE3 (QF510188040Z),P 18V-750/8T 400/690-50 IE3 (QF510188060Z),P 18V-900/9T 230/400-50 IE3 (QF510189040Z),P 18V-900/9T 400/690-50 IE3 (QF510189060Z),P 18L-400/4T 230/400-50 IE3 (QF810184040Z),P 18L-450/5T 230/400-50 IE3 (QF810185040Z),P 18L-550/6T 230/400-50 IE3 (QF810186040Z),P 18L-550/6T 400/690-50 IE3 (QF810186060Z),P 18L-750/8T 230/400-50 IE3 (QF810188040Z),P 18L-750/8T 400/690-50 IE3 (QF810188060Z),P 18L-900/9T 400/690-50 IE3 (QF810189060Z),P 18LG-1000/11T 400/690-50 IE3 (QF8501811060Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.