Details
| Also known as | S543 |
| Diagram | Fig. 2 — CRANKCASE · ref 36 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1974, 1976–1980, 1983, 1985 |
LEVEL PLUG,TRANS
The transmission oil level plug for Triumph twins, threaded into the gearbox casing.
PN · 21-0543
21-0543 is the level plug for the transmission on Triumph twins, sitting in the crankcase area per the catalog listing under CRANKCASE and HDP. It's the small threaded plug you pull to check the oil level in the gearbox before you top it off, and it's cheap enough to keep a spare on hand so you're not fighting a stripped or buggered-up old one at the bench.
$2.95
Pin your bike to check this part fits.
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