| Also known as | E4787 |
| Diagram | Fig. 2 — CRANKCASE · ref 21 |
| Subsystem | engine bottom |
| Listed in parts books | 1963–1964 |
RIGHT INNER COVER
A right-hand inner crankcase cover for Triumph engines, listed under 70-4787 (also known as E4787).
The 70-4787 is a right inner cover, listed in the crankcase section of the parts books for engines built in the 1963-1964 window. It carries the older factory code E4787 as well, so if you're working from an early parts list you may see it show up under that number instead.
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Being an inner cover on the crankcase, it sits close to the engine's internal works on the right-hand side, bridging the gap between the outer covers and the crankcase casting itself. Our catalog record doesn't go into more detail on gaskets, fasteners, or exact mounting points, so it's worth comparing against what's on the bike before you order.
With only a couple of catalog appearances on file for this one, we don't have a lot more to go on. Give us a call and we'll help confirm it matches what you're pulling off the engine.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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