PLEASE NOTE: Delays in processing. Orders placed between Thursday 11 April and Wednesday 1 May will be processed 02 May.
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