| Also known as | E8134 |
| Diagram | Fig. 2 — CRANKCASE · ref 66 |
| Subsystem | frame |
| Listed in parts books | 1968, 1970 |
Shakeproof washer
A shakeproof washer (PN 70-8134, also E8134) used under fasteners at various crankcase, frame, and fender mounting points.
This is a shakeproof washer, part number 70-8134, also listed in older books as E8134. It shows up across several different areas of the catalog including crankcase mounting points, the frame and frame assembly, and fender mounting hardware, which tells you this is a general-purpose fastener rather than something built for one specific job.
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A shakeproof washer's function is straightforward: it sits under a nut or bolt head and bites into both surfaces slightly to resist the fastener working loose from vibration. On a motorcycle that's running a solid-mounted engine and shaking down the road for years, that's not a small thing - these little washers turn up all over the bike wherever the factory wanted extra insurance against a fastener backing off.
Our catalog record ties this one to appearances from 1968 through 1970 across those crankcase, frame, and fender listings, but it doesn't spell out an exact model or a single mounting location. If you're chasing down a specific bolt on your bike, give us a call and we'll help confirm this is the right washer for that spot before you order.
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