CLUTCH SPROCKET FOR POWER SAW GGP STIGA CASTELGARDEN ALPINA + CAGE and PUMP PLUG FOR MODELS: 254 AFTER SERIAL NUMBER 3450001 257 DIMENSIONS: (A) BORE: 16 MM (B) OUTER DIAMETER: 72.5 MM (C) INTERNAL DIAMETER: 68.5 MM INCH PITCH: aut. 3/8" N TEETH: 7 CODE: 656229 ORIGINAL CODE: 100757 HUSQVARNA VR