| Also known as | WW37321 |
| Diagram | Fig. 21 — FRONT WHEEL · ref 9 |
| Subsystem | wheels |
| Listed in parts books | 1974, 1976–1980, 1983 |
Nut - Wheel Spindle
Front wheel spindle nut for the disc-brake front hub, Triumph part 37-4133 (WW37321).
This is the nut that secures the front wheel spindle on the front hub, listed in the parts book under the FRONT WHEEL section. It's a Triumph part, carried in the catalog with the older WW37321 reference alongside the current 37-4133 number.
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Catalog listings tied to this nut reference a front disc brake setup, so it belongs on the disc-braked front end rather than an earlier drum front wheel. The catalog shows it appearing across a run of years from the mid-70s into the early 80s, which lines up with the disc-front-brake era of the unit twins.
If you're replacing this nut, check what's actually on your spindle before ordering — parts books mix drum and disc front ends across model years, and this one's specifically tied to the disc-brake front wheel arrangement.
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