Fits the Following Chainsaws
Stihl 044, 046, MS341, MS361, MS362, MS440, MS441, MS 460
Replaces Stihl Part Number 1128-007-1000, 1128-640-2000
Fits Crankshaft Diameter .3937 (10mm)
Drive Sprocket Bearing ORF 37504 (10 x 16 x 12)
Rim Spline Size Standard 7 Tooth (RSD)