This is a set of 4 brand new fiber washer.

Part # 70-1577, E1577, 82-9076, 67-0042

Fits: Triumph 500cc, 650cc Pre-Unit rocker box inspection cap.

        Triumph 350cc, 500cc, T90, T100 sump drain plug.

         BSA oil tank filler cap and chaincase inspection cover and some BSA single rocker box inspection cap such as B25, B40, B44, B50, C25 

Please check your parts book to be sure that this is the correct part number, as these caps are bigger and do not fit some of the years of the BSA singles we have listed.

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