| Also known as | E6901 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 16 |
| Subsystem | engine bottom |
| Listed in parts books | 1967–1969 |
Gudgeon pin
A gudgeon pin (E6901) linking piston to connecting rod, appearing in Triumph crankshaft and connecting rod catalog listings from 1967-1969.
Part number 70-6901 is a gudgeon pin, the hardened steel pin that runs through the piston and connecting rod small end to join the two together. It shows up in the crankshaft and connecting rods section of the parts book, which is where you'd expect it since it's part of the piston-to-rod assembly at the heart of the bottom end.
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The catalog lists this under the legacy alias E6901 as well, so if you're working from an older parts book and see that number, it's the same physical part. Our records show it appearing across catalog entries from 1967 to 1969, but we don't have a specific model tied to it beyond that, so confirm fitment against your own engine before ordering.
When you're replacing one of these, it usually comes up during a piston or rod rebuild. Worth having new circlips on hand too since those are a separate item from the pin itself.
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