Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:KB550 230-50 IE2 (QF040220000Z),KB550/1 230-50 IE2 (QF040220100Z),KB751RT 230/400-50 IE3 (QF040230040Z),KB751RT 400/690-50 IE3 (QF040230060Z),KB751R/1T 230/400-50 IE (QF040230140Z),KB751R/1T 400/690-50 IE (QF040230160Z),KB900T 400/690-50 IE3 (QF040240060Z),KB900/1T 230/400-50 IE (QF040240140Z),KB900/1T 400/690-50 IE3 (QF040240160Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.