New Top Quality English Made Early Triumph 350 & 500 Unit Twins Distributor Sheath Cover. If your restoring your Triumph Unit Twin back to Factory standards, then you will need this part! These where installed to keep Water & Debris of your “Dizzy” 18D2 Distributor! Fits Triumph 350 & 500 Unit Twins (3TA, 5TA, Twenty-One, T100A, T100SC, Etc) from 1957-1962 that where equipped with Distributors. Please refer to your parts catalog for proper fitment.
*****Please note that this part will only fit Triumph 350 & 500 Unit Twins that have the “Distributor”!*****

Made in EnglandO.E.M Part number is 70-3863 or E3863