| Diagram | Fig. 4 — Engine: Crankcases, Crankcase Breather, Tachometer Drive · ref 45 |
| Subsystem | engine bottom |
| Listed in parts books | 1975 |
Norton Gasket, Tachometer Housing
Gasket for the tachometer drive housing on Norton crankcases, part number 06-3056.
This is the gasket that seals the tachometer drive housing on the crankcase, part number 06-3056. The manufacturer tag and the figure title both point to Norton on this one, not Triumph, so if you're working on a Triumph don't reach for this part by mistake.
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It sits down in the engine bottom area, in with the crankcases, filter, breather, and tachometer drive assembly, sealing the housing where the tach drive comes off the crankcase. It's a simple flat gasket - nothing fancy, but a torn or hardened one will let oil seep out around the tach drive housing over time.
Our catalog only shows this one turning up in a single listing tied to 1975, so we don't have a broader model history on it beyond that. If you're not sure this is the right gasket for your setup, give us a call and we'll confirm before you order.
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