STIHL CHAINSAW CLUTCH PINION WITH CAGE AND PUMP ENGAGEMENT FOR MODELS: 64, 066, MS360, MS660 DIMENSIONS: (A) BORE: 16 MM (B) OUTSIDE DIAMETER: 85 MM (C) INSIDE DIAMETER: 81 MM INCH PITCH: 3/8" N TEETH: 7 CODE:656112 ORIGINAL CODE: 65464X STIHL VR