Triumph / BSA Triples Rotor Nuts (1) - 1968-76 - Choose Rotor Nut Type / Application Cover M Part number is 70-4573

M Part number is 70-4573 or E4573

then you will need this part

Tired of your Phillips Head Screw Stripping on your Carburetor every time you take the Cap or Float Bowl off

Phenolic spacers also block heat transfer better than any other spacer

Triumph / BSA Triples Rotor Nuts (1) - 1968-76 - Choose Rotor Nut Type / Application Cover M Part number is 70-4573Today we would like to offer you two types of replacement rotor nuts for Triumph and BSA three cylinder models. Both rotor nuts measures 7 16" x 20 however they are different in terms of length. Rotor nuts will replace Triumph and BSA part numbers 70 8763, E8763, 21 2182 & S2182. Fits Triumph & BSA A75, T150 and T160 models from 1968 1976. Check your parts book to ensure the best fitment. Please note that our rotor nuts are sold each use the drop down