This is a Farmall 4 Cylinder Distributor Drive Gear.
Used on many models of Farmall tractors that use IH made distributors. For more specific questions, please contact us.
This is not O.E.M.
Instructions:
This new gear comes with only one hole for the roll pin. Because IH didn’t drill them all the same, you have to install the gear on the shaft, line up the holes and use a 1/8″ drill to drill through the other side of the gear. Then install the roll pin.