| Also known as | W1237 |
| Diagram | Fig. 21 — FRONT WHEEL · ref 2 |
| Subsystem | wheels |
| Listed in parts books | 1960–1962, 1964–1974, 1976–1980, 1983 |
Grease cap outer—L.H
Outer grease cap for the left-hand side of a Triumph front wheel hub, keeping dirt and grease where they belong.
This is the outer grease cap for the left-hand side of the front wheel, sitting over the hub bearing to keep road dirt and water off the grease packed inside. It's a small stamped cover that fits against the wheel hub where the spindle passes through, part of the front wheel assembly on drum-brake front ends.
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The catalog carries this under 37-1237, with the older reference W1237 turning up as the same part in earlier parts book listings. It shows up across a wide run of front wheel figures for Triumph twins and singles built through the 1960s and 70s, so the shape has stayed consistent over a long production run, but always check your own parts book figure against your hub before ordering since front wheel setups changed across models and years.
It's a simple wear-and-tear item — grease caps get knocked around, corrode, or lose their crimp over the years, and swapping in a fresh one is routine hub maintenance work when you have the wheel apart.
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