| Also known as | E4593 |
| Diagram | Fig. 2 — CRANKCASE · ref 40 |
| Subsystem | engine bottom |
| Listed in parts books | 1963–1968 |
Fibre washer
A fibre sealing washer used in the crankcase area of the engine, part number 70-4593.
This is a fibre washer that lives in the crankcase area of the engine, listed under part number 70-4593 (also known by the earlier E4593 designation). It shows up repeatedly across the crankcase section of the parts book, which tells us it's a small sealing piece used at more than one point on the bottom end.
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Fibre washers like this one are used as a soft sealing washer, typically under a plug or fitting, to keep oil where it belongs without marring the threads or the seating surface the way a metal washer might. Given how many times it appears in the crankcase figures across the catalog years, it's the kind of part worth having a few of on hand rather than hunting for one at a time.
Our record doesn't spell out exactly which plug or fitting this particular washer seats under, so if you're chasing a specific oil leak or rebuilding a specific area of the crankcase, give us a call and we'll help pin down the right spot before you order.
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