| Also known as | E12356 |
| Diagram | Fig. 5 — CYLINDER BLOCK AND HEAD, T120R · ref 8 |
| Subsystem | engine top |
| Listed in parts books | 1971 |
1971 CYL HEAD NLA
1971 T120R cylinder head, listed in the parts book as no-longer-available (NLA).
71-2356 is the cylinder head listed against the T120R in the parts book, tied to the 1971 model year. The catalog carries it as no-longer-available (NLA), meaning Triumph and the aftermarket supply chain don't stock this as a fresh casting anymore — what's out there is whatever turns up used or NOS.
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The cylinder head sits on top of the barrels and carries the valves, ports, and combustion chambers for that side of the engine. Because this listing only shows up once in the catalog and is flagged NLA, there isn't much more to go on from our records about specific dimensions or casting variations.
If you're chasing this number for a rebuild, call the shop before you commit money to it — between the single-year listing and the NLA status, we'll want to talk through what's actually out there and whether a later or earlier head can be made to work for your application.
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