| Diagram | Fig. 6 — GEAR CLUSTER, CAMSHAFT · ref 42 |
| Listed in parts books | 1969–1972 |
BSA Gearbox mainshaft with push rod bush
Gearbox mainshaft with pushrod bush, a BSA A65-era transmission internal from the gear cluster and camshaft assembly.
This is a gearbox mainshaft, machined to accept a pushrod bush as part of the assembly. It's a gearbox internal, part of the gear cluster and camshaft grouping in the catalog records, which puts it deep inside the transmission where it carries drive through the box.
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The canonical description ties this specific mainshaft to the pushrod bush that rides on it, so when you're replacing one it's worth checking the condition of the other. Our records show this part number appearing in gearbox figures across catalog entries from 1969 through 1972, but we don't have a specific model tied to those entries beyond that.
A catalog title we've seen elsewhere lists this same part number as a mainshaft for the A65, which is a BSA model, not a Triumph. Given the manufacturer tag also points to BSA, this looks like a BSA gearbox part that shares a numbering convention with Triumph catalogs of the era. Confirm fitment against your actual gearbox before ordering.
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