Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:BMVC-3/18,5 400/690-50 IE3 (QF700033060Z),BMVC-5/30 400/690-50 IE3 (QF700035060Z),BMVC-6/37 400/690-50 IE3 (QF700036060Z),BMHC-3/18,5 400/690-50 IE3 (QF710033060Z),BMHC-5/30 400/690-50 IE3 (QF710035060Z),BMHC-6/37 400/690-50 IE3 (QF710036060Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.