| Also known as | M21-1849 |
| Diagram | Fig. 4 — CRANKCASE · ref 11 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1972 |
BSA STUD CRANK CASE A65
Crankcase stud for the BSA A65 unit twin, PN 21-1849.
This is a crankcase stud for the BSA A65, part number 21-1849 (also listed as M21-1849). It shows up in the crankcase and crankcase/generator figures of the parts book, so it's one of the studs holding the crankcase halves and related covers together on the A65 unit twin.
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Our catalog record covers this part across appearances from 1969 to 1972. Beyond that, we don't have more detail on it - no thread size, length, or finish is called out in our records, so if you're matching studs on a rebuild, bring the old one in or measure before you order.
This isn't a Triumph part - it's a BSA A65 piece, and it's worth keeping that straight since BSA and Triumph crankcase hardware doesn't always interchange even when the numbers look similar.
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