| Also known as | E441 |
| Diagram | CHAINCASE AND CHAINS |
| Subsystem | primary |
| Listed in parts books | Not catalogued by year yet |
Copper washer
A copper sealing washer listed in the chaincase and chains section, also known by the old E441 number.
This is a copper washer that shows up in the chaincase and chains section of the parts book, listed under the old E441 number before Triumph switched to the 70-0441 numbering. Copper washers like this are used as sealing washers, typically under a drain plug or banjo fitting, since copper deforms slightly when compressed and helps keep oil from seeping past a threaded joint.
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Our catalog record only shows one appearance for this part, tied to the 1968 listing, so we don't have much more detail to go on beyond the figure it's grouped with. If you're chasing an oil leak around the chaincase and think this is your washer, give the shop a call and we'll help confirm before you order.
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