| Also known as | D2600, G288A |
| Diagram | Fig. 34 — SPEEDOMETER AND TACHOMETER · ref 9 |
| Subsystem | electrical |
| Listed in parts books | 1971–1974, 1976–1978 |
INSTRUMENT RUBBER BOOT TRI/BSA OIF - UK MADE
Rubber mounting boot for the Smiths speedo or tach on OIF Triumph 650 Unit, 750 Trident, 750 Twin (1971-78) and BSA A65 (1971-72).
This is the rubber boot that covers the mounting stud on the back of the Smiths speedometer or tachometer on the OIF (oil-in-frame) Triumphs and BSAs. It seats around the instrument body where it passes through the headlamp bracket or instrument mount, keeping road grime and moisture off the gauge's electrical connections. Catalog listings tie this part to the Triumph 650 Unit, Triumph 750 Trident, and Triumph 750 Twin from 1971 through 1978, and to the BSA A65 for 1971 and 1972.
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Part number 60-2600 also shows up under the older D2600 and G288A designations, so if your parts book or an old box of spares has one of those numbers on it, it is the same physical piece. It is UK made and sits in the SPEEDOMETER AND TACHOMETER section of the parts books, meaning you will need one for the speedo and another for the tach if both instruments use this boot type.
These perish and crack with age and heat off the top of the engine, so if the one on your bike is split or hardened it is worth swapping in a fresh one rather than trying to nurse the old one along.
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