New UK Made Triumph Unit Twins Oil Pump Mounting Lock Washer. Washer is the correct "conical / dished" type that measures 1/4". Fits Triumph 650 & 750 Unit Twins (Bonneville, T120, T140, Tiger, TR6, TR7, T120RV, T140D & Trophy) from 1963-1979 with the "2-Valve" oil pump. Also fits Triumph Unit 350 & 500 Twins (Daytona, T100R, Tiger, T90 & T100C) from 1957-1974. Please refer to your parts catalog for proper fitment.
Washers are sold each as pictured
•Made in the UK
•O.E.M Part number is 70-3887 or E3887