Original Pentax spare part for Pentax and Foras water pumps. Suitable for the pump models:PLUS-S P 3S-90/4T 230/400-50 (PF500304240ZX),PLUS P 3-90/4 230-50 (PF500304000ZX),PLUS P 3-90/4T 230/400-50 (PF500304040ZX),PLUS-S P 3S-90/4 230-50 (PF500304200ZX)We sell only Original spare parts from the manufacturer. Do not use analogue parts that could damage your pump.