| Also known as | 67-0790A |
| Listed in parts books | Not catalogued by year yet |
TIMING SIDE BUSH .010 A10
A .010 in. oversize timing side main bush for the BSA A10 engine, also listed as 67-0790A.
This is a timing side main bush for the BSA A10, machined .010 in. over standard size for a rebuild that needs a bit of extra material taken up. It's the same part as the older 67-0790A number if you're working from an earlier parts book.
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The timing side bush is what the crankshaft rides in on the timing side of the engine, and it's a normal wear item on any A10 that's seen real use. When the standard bush has worn past service limits, machine shops step up to an oversize like this .010 to get a proper running clearance again without replacing the crankcase.
We don't have much more on file for this one beyond what's in the catalog description. If you're not sure which oversize your crankcase has already been bored to, best to check your measurements or call the shop before ordering.
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