| Also known as | 41-673 |
| Diagram | Fig. 3 — CRANKCASE · ref 4 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1972 |
BSA Key — rotor to crankshaft
Key that locates the rotor on the crankshaft, per the parts book listing.
This is the small key that locates the rotor on the crankshaft, per the parts book description. It shows up across crankcase and crankshaft figures in the catalog, which tells us where in the engine it lives, but the record doesn't spell out dimensions or material for this one.
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The part number 41-0673 also appears in older records as 41-673, so if your parts book uses that older style number, it's the same physical piece.
We don't have more detail on this one beyond what's in the description and figure titles. If you're matching it up to a specific engine, give us a call and we'll confirm before you order.
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