Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:PLUS-S P 5A-150/5 230-50 (PF540505000Z),PLUS-SA P 3A-90/4 230-50 (PF540304000ZX),PLUS-A P 3A-90/4T 230/400-50 (PF540304040ZX),PLUS-A P 3A-100/5 230-50 (PF540305000ZX),PLUS-A P 3A-100/5T 230/400-50 (PF540305040ZX),PLUS-A P 5A-120/4 230-50 (PF540504000ZX),PLUS-A P 5A-120/4T 230/400-50 (PF540504040ZX),PLUS-S P 5A-150/5 230-50 (PF540505000Z),PLUS-A P 5A-150/5T 230/400-50 (PF540505040Z)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.