OD: 1-5/8″ 10 spline, 21 teeth, 25 degree.
Front seal diameter OD: 1.750″, Rear seal diameter OD: 1.625″
NOTE: If used to replace 398235R1 or 66347C3 IPTO Shaft and Gear it requires 71229C2 Carrier and 108982C1 Seal