*Just Arrived!* New English Made Lucas Type Magneto Drive End Oil Seal. If your looking for the highest quality oil seal for your Lucas Magneto you have found it! Seal thickness measures approx 1/8″. Fits Lucas K1F & K2F magnetos used after 1956. Lucas Magnetos where used on many Triumph, Norton, AJS, Matchless & BSA models! Please refer to your parts catalog for proper fitment.Made in the UKO.E.M Part number is 459002