| Also known as | 37-3747S, W3747 |
| Diagram | Fig. 22 — REAR WHEEL · ref 5 |
| Subsystem | wheels |
| Listed in parts books | 1971–1972, 1974 |
Sprocket 47T
47-tooth rear sprocket for the conical hub rear wheel, also cataloged as W3747 or 37-3747S.
This is the 47-tooth rear sprocket that bolts to the conical rear hub, the part that takes the final drive chain's pull and turns it into rear wheel rotation. It shows up in the parts book under the REAR WHEEL heading and carries the tooth count right in its own name.
Read more
Our catalog entries put this sprocket in the 1971–1972 window, which lines up with the oil-in-frame conical hub era. If you're working off an older parts book you may see it listed as W3747 or 37-3747S — same physical piece, just a different number stamped into a different edition of the catalog.
When you pull the old one to replace it, check the bolt pattern and hub taper against what you've got on the bike before you order, since conical hubs went through some changes across the run and we want the sprocket to seat right the first time.
Sorry if we got something wrong here. If you think this information isn't correct, .