| Diagram | Fig. 16 — FRAME · ref 2 |
| Subsystem | frame |
| Listed in parts books | 1974, 1976–1980, 1983 |
FILLER CAP WITH DIPSTICK T140 (LATER PLASTIC TYPE STICK)
Oil filler cap with attached dipstick for oil-in-frame Triumph twins, the later plastic-stick version, PN 71-3463.
This is the oil filler cap with attached dipstick for the oil-in-frame Triumph twins, part number 71-3463. On these bikes the frame's front downtube doubles as the oil tank, and this cap threads into the top of it, sealing the tank and letting you check the level with the dipstick built into the cap itself.
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The catalog notes this as the later plastic-type stick version, so if you're chasing a replacement to match what came off your bike, it's worth knowing there was an earlier stick design before this one. It shows up across catalog listings from the mid-1970s into 1980, appearing under the frame and gearbox-area figures alongside the chaincase and inner cover pages since it's part of the same oil-tank-in-frame layout.
If your dipstick has gone brittle or the threads on your old cap are stripped, this is a straightforward swap. Give us a call if you're not sure whether your bike uses the plastic-stick version or the earlier one before you order.
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