Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:P 18L-400/4T 230/400-50 IE3 (QF810184040Z),P 18SL-400/4T 230/400-50 IE3 (QF810184240Z),P 18L-450/5T 230/400-50 IE3 (QF810185040Z),P 18SL-450/5T 230/400-50 IE3 (QF810185240Z),P 18SL-450/5T 400/690-50 IE3 (QF810185260Z),P 18L-550/6T 230/400-50 IE3 (QF810186040Z),P 18L-550/6T 400/690-50 IE3 (QF810186060Z),P 18SL-550/6T 230/400-50 IE3 (QF810186240Z),P 18SL-550/6T 400/690-50 IE3 (QF810186260Z),P 18L-750/8T 230/400-50 IE3 (QF810188040Z),P 18L-750/8T 400/690-50 IE3 (QF810188060Z),P 18SL-750/8T 400/690-50 IE3 (QF810188260Z),P 18L-900/9T 400/690-50 IE3 (QF810189060Z),P 18SL-900/9T 400/690-50 IE3 (QF810189260Z),P 18SLX-400/4T 230/400-50 IE3 (QF820184240Z),P 18SLX-450/5T 230/400-50 IE3 (QF820185240Z),P 18SLX-750/8T 400/690-50 IE3 (QF820188260Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.