| Diagram | Fig. 2 — CYLINDER AND CRANKSHAFT · ref 14 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1970 |
BSA Inlet rocker complete
Complete inlet rocker arm assembly for the cylinder head rocker gear, listed under the cylinder and crankshaft section for 1969-1970 catalog entries.
This is the complete inlet rocker as listed for the cylinder head and rocker gear on these engines. A rocker arm like this pivots on a spindle inside the rocker box and transfers the lifting motion from the pushrod to the valve, opening the inlet valve at the right point in the cycle. "Complete" in the description means this comes as an assembled unit rather than just the bare arm.
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The catalog places this part under the CYLINDER AND CRANKSHAFT figure, and the appearances on file run from 1969 to 1970. Beyond that we don't have more detail on this one from our own records.
Other catalog listings tie this rocker to the C15, B44, and B50 engines, which are BSA models, not Triumphs, even though the description alone doesn't spell that out. If you're sourcing this for a build, confirm which engine your rocker box is off of before ordering, since inlet and exhaust rockers aren't always interchangeable and rocker geometry varies across these engine families.
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