| Diagram | Fig. 15 — Front Wheel and Brake (Disc Type) · ref 30 |
| Subsystem | brakes |
| Listed in parts books | 1975 |
Norton End Plug
An end plug for the Norton hydraulic brake caliper, sealing a passage in the caliper body.
This is an end plug used in the hydraulic brake system, appearing in both the front wheel/brake and rear brake hydraulic figures. It's a Norton part, not a Triumph one, and shows up on Commando-family disc brake setups per the catalog title referencing it as a caliper plug.
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The plug seals off a passage or bore in the caliper body so the hydraulic circuit holds pressure and fluid stays where it belongs. It's a small part but a critical one for a disc brake caliper to work correctly - a bad seal at this plug means fluid leaking or air getting pulled in.
Our catalog record only ties this to the two brake figures listed and doesn't spell out further model-year specifics beyond the range shown. If you're rebuilding a caliper, call the shop and we'll confirm this is the right plug for your setup before you order.
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