Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:SE310 230-50 IE2 (QF390090000Z),KM314 230-50 1"1/4 x 1" IE2 (QF030039000Z),KM314/1 230-50 1"1/4 x 1" IE2 (QF030039100Z),KB310 230-50 IE2 (QF040200000Z),KB310/1 230-50 IE2 (QF040200100Z),KM314/1 230-50 (PF030039100Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.