Details
| Diagram | Fig. 1 — CYLINDER HEAD, EXHAUST PIPE · ref 25 |
| Subsystem | engine top |
| Listed in parts books | 1969–1970 |
BSA Valve spring top collar
Valve spring top collar for the cylinder head valve train.
PN · 40-0171
This is a valve spring top collar, the small cup-shaped retainer that sits at the top of the valve spring stack in the cylinder head. It works with the split collets to lock the spring in place against the valve stem, keeping tension on the spring so the valve closes properly against its seat.
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