PISTON COMPATIBLE HUSQVRANA FOR POWER SAWS MODELS: 61 (model up to 1992) PISTON ID: 48 mm PISTON LENGTH: 33 mm PISTON OUTSIDE: 12 mm PISTON INNER: 8 mm PISTON CLOSED TO THE BOTTOM HUSQVARNA TOP QUALITY Code: 54.230.1648 Original part No.: CZ