| Also known as | E12513 |
| Diagram | Fig. 1 — CYLINDER HEAD, BARREL AND CRANKSHAFT · ref 26 |
| Subsystem | engine bottom |
| Listed in parts books | 1971 |
TAPPET,BSA B25/B50 71-ON
Tappet for BSA B25/B50 engines, cataloged from 1971 on.
This is a tappet listed in the catalog as fitting BSA B25/B50 models from 1971 on. The canonical description names BSA, not Triumph, so despite how it's filed in our system, this part belongs to the BSA singles family, not a Triumph twin.
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It shows up in the parts book under the cylinder head, barrel, and crankshaft section, which is where you'd expect a tappet to live — it's the component that rides on the camshaft lobe and transfers that lift up to the pushrod (or valve, depending on the engine's valve gear arrangement) to open the valve. Our catalog record for this one is brief, just the single listing tied to 1971, so we don't have more detail on it beyond that.
If you're sourcing this for a B25 or B50 engine job, it's worth confirming against your specific engine before ordering, since our record here doesn't go beyond the one line.
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