It is 2-1/2" inches from the back side of the bumper to the mounting hole plate
as shown in photo number 3
Referred to in Cole Distributor parts catalog as "tappet flange" and attaches to the drive wheel to drive feed mechanism
Fiat Allis bearing part numbers - 70210740
Case IH Spring Pin part number 367863C1
New Old Stock PTO Shaft Inner Profile Tube Yoke, 300-7123, FREE SHIP It is 2-1/2" inches fromNew Old Stock PTO Shaft Inner Profile Tube Yoke with Bearing Groove. Fits Walterscheid Metric 2100 Series PTO. Weasler PTO Shaft Inner Profile Tube Yoke part numbers: 300 7123, 3007123. FREE SHIPPING!!! Cross and Bearing Cap Diameter . 87 Inch 22mm Cross and Bearing Overall Length 2. 16 Inch 54. 80mm Metric Tube Yoke Bore Size 23MM Lemon PTO Inner Tube Profile Yoke interchange part numbers: WYTO 10 2 23, 82130, 343 1307, WYTO10223, 104800, AW040444A,