| Also known as | 68-581 |
| Diagram | Fig. 4 — CRANKSHAFT · ref 28 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1972 |
BSA Bolt — flywheel, oil tube location
A bolt that locates the oil tube inside the flywheel, part of the crankshaft assembly.
This is a bolt used in the crankshaft assembly, specifically at the flywheel where it locates the oil tube (what some call the sludge trap tube) inside the flywheel. It shows up in the crankshaft and crankshaft/pistons figures in the parts books, and it's a small but important fastener — it's what keeps the oil tube pinned in place so oil flow through the flywheel stays where it belongs.
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The catalog lists this under 68-0581, with 68-581 as the same part number in its older short form. Our records show it appearing across catalog entries from 1969 through 1972, though we'd check your specific parts book or engine casting before ordering to make sure you've got the right one.
If you're in there doing crank work and pulling the flywheel apart, it's worth inspecting this bolt along with the oil tube itself — a lot of engine trouble down the line traces back to a sludge tube that wasn't seated and secured right.
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