Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models: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.