| Diagram | Fig. 5 — GEAR CLUSTER · ref 103 |
| Listed in parts books | 1969–1970 |
BSA Screwed plug, mainshaft oil feed
A screwed plug that seals the mainshaft oil feed passage in the gearbox.
This is a screwed plug that seals the oil feed on the mainshaft, part number 53-3049. It shows up in the gearbox parts books under the GEAR CLUSTER and FOOTSTART AND FOOTCHANGE figures, which tells us it lives down in the gearbox area where the mainshaft oil feed passage needs to be plugged off.
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The catalog data we have puts it in the 1969-1970 appearance window, but that's just what turns up in the records we have on file, not a promise about which specific model it goes on. If you're chasing this one down, best to check it against your actual gearbox before ordering.
It's a small, simple piece, but if it's missing or damaged you can lose oil pressure to the mainshaft, so it's worth checking that it's seated properly and not stripped or leaking when you have the gearbox apart.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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