part 66041009 Piston Ø28 x 54 Interpump code 66041009 Details Interpump number66041009 DescriptionPiston Ø28 x 54 ItalianPISTONE D.28X54Qty per pump3 Fits these pumps Interpump 66 SS series 1 SSE1550 Interpump 66 VHT series 1 VHT6650 Interpump 66 series 3 W1550W1555W1755