T140E & TR7) from 1973-1983
Have you took apart your top-end and noticed the ends of your valve tips have wear marks from the tappet adjusters
Rubber Gaskets even have the Correct raised design to allow a snug fit into your tank badge
OEM part number is 60-4511
if your looking for something affordable
Triumph Oil Tank Brass Magnetic Drain Plug (1) - 82-5343 - T90 / T100 / T120 / T140 / T150 97-1527 T140E & TR7) from 1973-1983USA Made Triumph Twins Magnetic Oil Tank Drain Plug. Give your self some peace of mind that you deserve and catch unwanted metal debris inside your oil tank with this magnet drain plug! Machined right here in the USA using the best quality materials available! Size measures 3 8" x 28 TPI. Fits Triumph 650 Unit Twins (Trophy, Bonneville, T120, TR6, TR6C, Etc) models from 1963 1970. Fits Triumph 350 & 500 Unit Twins (Daytona, T100, T100R, T100C, Etc)