Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:P 18S-400/4T 230/400-50 IE3 (QF500184240Z),P 18SV-400/4T 230/400-50 IE3 (QF510184240Z),P 18SV-450/5T 230/400-50 IE3 (QF510185240Z),P 18SV-550/6T 230/400-50 IE3 (QF510186240Z),P 18SV-750/8T 400/690-50 IE3 (QF510188260Z),P 18SV-900/9T 400/690-50 IE3 (QF510189260Z),P 18SL-400/4T 230/400-50 IE3 (QF810184240Z),P 18SL-450/5T 230/400-50 IE3 (QF810185240Z),P 18SL-450/5T 400/690-50 IE3 (QF810185260Z),P 18SL-550/6T 230/400-50 IE3 (QF810186240Z),P 18SL-550/6T 400/690-50 IE3 (QF810186260Z),P 18SL-750/8T 400/690-50 IE3 (QF810188260Z),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),P 18SLG-920/10T 400/690-50 IE3 (QF8501810260Z),P 18SLG-1000/11T 400/690-50 IE3 (QF8501811260Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.