| Diagram | Fig. 1 — CYLINDER HEAD · ref 24 |
| Subsystem | engine top |
| Listed in parts books | 1969–1972 |
BSA Spigot — inlet balance pipe
Spigot fitting for the inlet balance pipe where it seats into the cylinder head.
This is a spigot for the inlet balance pipe, the small fitting that lets the balance tube seat into the cylinder head between the two intake ports. It shows up in the cylinder head and rocker figures, which puts it right up top on the engine where the head meets the carburetor intakes.
Read more
The balance pipe itself ties the two inlet tracts together so both cylinders draw evenly, and this spigot is the connector piece that lets that pipe join up cleanly at the head. It's a small part but if it's missing, cracked, or not seating right you'll get an air leak that throws off carb tuning.
Our catalog record shows this appearing across a run of years in the cylinder head figures, and other parts catalogs list a nearly identical spigot for the A65L. Given the manufacturer listing and that A65L cross reference, this looks like a BSA piece rather than a Triumph one — worth confirming against your own parts book before ordering.
Sorry if we got something wrong here. If you think this information isn't correct, .