| Also known as | 68-647, B319C |
| Diagram | Fig. 4 — CRANKSHAFT · ref 24 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1972 |
.010 TIMING BUSH BSA A65
A .010 oversize timing-side crankshaft bush for the BSA A65, later superseded by 68-0657A.
This is a .010 oversize timing-side bush for the BSA A65 crankshaft, listed in the catalog under 68-0647 (also shown as 68-647 or the older B319C form). It shows up in the crankshaft and crankshaft/pistons figures, which puts it right in the bottom end where the timing-side of the crank runs in the case.
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The .010 designation means this is an oversize bush, used when the standard bore has worn and needs to be brought back to a serviceable dimension. Our records show this part was later superseded by 68-0657A, so if you're chasing this one down from an older parts book or a used engine, that's the number it carries forward as.
This is a BSA A65 part, not a Triumph piece, despite living in a shop that mostly talks Triumph. If you're rebuilding a bottom end and need this bush, give us a call to confirm which oversize your crank actually needs before you order.
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