PLEASE NOTE: Delays in processing orders. Orders placed between Tuesday 21 January and Monday 10 February will be processed 11 February.
Lucas Magneto auto advance springs, pair, suit Lucas magnetos on Norton Triumph, BSA, AJS etc. Outer diameter 3/16", eye on each end, 3/4" between centres; Overall length: 0.815" (20.72mm); Diameter 0.186" (4.72mm) Original part number: 498157 - auto advance unit spring set