| Diagram | Fig. 7 — CARBURETOR T140E · ref 33 |
| Subsystem | fuel |
| Listed in parts books | 1979–1980, 1983 |
2622/145 Air Vent pipe
Air vent pipe for the Amal Mk II Concentric carburetor, PN 99-7092, later renumbered 2622145.
This is the air vent pipe for the Amal Mk II Concentric carburetor, part number 99-7092, cataloged under the older 2622/145 reference. It shows up in the parts books for the T140E and T140D Bonneville carburetor setups, where it's fitted alongside the Mk II Concentric body.
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The vent pipe is a small but necessary piece of the carb - it lets the float bowl breathe properly so the fuel level inside stays consistent as the engine runs. If it's missing, cracked, or blocked, you can end up with fueling that varies with engine heat or vibration, which shows up as an inconsistent idle or flat spots.
The factory later renumbered this part to 2622145. If your parts book lists either number, you're looking at the same physical piece - worth checking which form you need before ordering, since old stock and new listings can show up under either.
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