No part number. Sprocket Cast with bushing inserts
.87"ID, 7 teeth,
Overall width 2.53" x 4.00"OD,
Tapped port for grease zerk.
On long side of hub which is 1.125" from end to side of sprocket, other short side of hub is .60" from end to side of sprocket. Only number I have to work with is the casting number GI 225 -A
