| Also known as | E2441 |
| Diagram | Fig. 2 — CRANKCASE · ref 37 |
| Subsystem | engine bottom |
| Listed in parts books | 1963–1965, 1967–1974, 1976–1980, 1983, 1985 |
Washer - breather tower to air box
A copper sealing washer used at several oil-tight joints on the engine, gearbox, and breather, PN 70-2441.
70-2441 is a small copper sealing washer that shows up over and over again in the parts books, wherever a screw or plug needs a soft, crush-fit seal against oil. The catalog lists it under a breather-tower-to-airbox description, but the figure titles tell a wider story - it appears in the chaincase and chains, manifold and tappets, crankcase, and motor unit fitting sections, so it's clearly a general-purpose sealing washer used at more than one point on the engine and gearbox.
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Copper washers like this one work by squashing slightly when the fastener is tightened, filling the small gaps that would otherwise let oil creep out. Because this same washer covers several different jobs across the motor, it's worth keeping a few in stock rather than assuming you only need one.
The legacy number for this part is E2441, and it supersedes the older 60-7132. If you're working from an older parts book and see either of those numbers, you're looking at the same washer.
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