part 66040109 Piston Ø22 x 54 Interpump code 66040109 Details Interpump number66040109 DescriptionPiston Ø22 x 54 ItalianPISTONE D.22x54Qty per pump3 Fits these pumps Interpump 66 SS series 3 SSE2030SSE2035SSU2040 Interpump 66 VHT series 1 VHT6639 Interpump 66 series 4 T2040W2030W2035W3535