| Also known as | 13-37716, E11448 |
| Diagram | Fig. 13 — GEARBOX OUTER COVER · ref 44 |
| Subsystem | gearbox |
| Listed in parts books | 1971–1974, 1978–1980, 1983, 1985 |
Gasket outer cover
Outer gearbox cover gasket for unit-construction Triumph twins, PN 71-1448.
71-1448 is the gasket that seals the outer gearbox cover on unit-construction Triumph twins. It sits between the gearbox outer cover and the main gearbox casing, sealing that joint so gear oil stays where it belongs instead of weeping out around the cover bolts. The figure references for this part show up under both the gearbox outer cover and the chaincase listings, which tells you it's a small, flat piece rather than anything structural.
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This number also carries a couple of alternate identities in the parts books: it shows up as 13-37716 and E11448, and the factory eventually carried it forward as CD-535. If you're chasing this gasket by an older or newer number and coming up empty, those are the ones to try.
It's a low-cost item worth having on hand whenever you're into the gearbox cover for any reason, since gaskets rarely come off clean and reusing a torn one just invites a leak back in. The catalog record spans a wide range of years, so bring your parts book or give us a call if you want to confirm it matches your specific cover before ordering.
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