| Also known as | 40-933 |
| Diagram | Fig. 1 — CYLINDER AND CRANKSHAFT · ref 58 |
| Subsystem | engine bottom |
| Listed in parts books | 1969 |
BSA Cylinder head gasket
Cylinder head gasket, PN 40-0933, seals the joint between cylinder and head on the top end of the engine.
This is a cylinder head gasket, part number 40-0933 (also listed as 40-933). It shows up in the parts book under the CYLINDER AND CRANKSHAFT figure, which puts it at the joint between the cylinder barrel and the head on the top end of the engine.
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A head gasket like this seals that joint so compression stays where it belongs and combustion gases don't leak past the mating surfaces. Any time the head comes off for valve work or a rebore, this is a part you replace rather than reuse.
Our catalog record for this one is thin — just the single listing tied to 1969. If you're matching it to a specific engine, give us a call and we'll confirm fitment before you order.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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