TOPSO STIHL chainsaw clutch bell sprocket Bell: 68.30 mm Coupling: 15.00 mm Height: 30.50 mm Pitch: 3/8 Number of teeth: 7 for models: TOPSO all models STIHL 030AV 031AVE 032 041/AVE after serial no. 5664891 Part No.: 004627 Original part No.: 18200 TOPSO STIHL MOTORWHEELCHAVE MAC MC CULLOCH 3/8 TEETH 7 BELL 68. 30 COUPLING 15.00 HEIGHT 30.50 O.C.: 18200XW RING BM 001972 SR