O-ring sizes for 5 speed transmissions

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

Created: 2012 December 07

Updated: 2021 July 28

There are six O-rings used with the 5 speed transmissions (not all six are used with all 5 speed transmissions). These measurements are accurate to the original specifications. Thanks to Mark Lopeman for providing some clarifying details.

• O-ring for the shift shaft, fits inside the rear cover (MG# 90706140; OR 3056): 13.94 mm ID × 2.62 mm wide
• O-ring for the clutch input hub (MG# 90706203; OR 3081): 20.3 mm ID × 2.62 mm wide
• O-ring for the for the layshaft/output shaft, fits between 1^st gear and 5^th gear (MG# 90706203; OR 3081): 20.3 mm ID × 2.62 mm wide
• O-ring for the for the layshaft/output shaft, fits over the splines between 5^th gear and the bearing or shim (MG# 90706219; OR 2093): 23.52 mm ID × 1.78 mm wide
• O-ring for the clutch input hub, fits into the groove on the shaft (MG# 90706235; OR 2081): 20.35 mm ID × 1.78 mm wide
• O-ring for the 22 mm diameter outer body of the throw out bearing assembly (MG# 90706170; OR 3068): 17.13 mm ID × 2.62 mm wide