Gearbox Layshaft Welch Plug, Triumph
Gearbox layshaft needle roller bearing welch plug (welch washer).
Fitted to all the pre-unit Triumph gearboxes from 1950 to the end of the pre-units in 1962. Also fitted to the unit construction 350 & 500 models from 1957 to 1961 (for the T100) and to 1963 for the 3TA & 5TA (until the adoption of the closed end needle roller bearing).
Made in England.