Ignition Distributors and Distributor Parts We offer parts and services for your four or six cylinder Porsche distributor. We’ve developed many parts that are unavailable from Bosch® or Porsche®. See our rebuild kits, shims, bushings, springs, gears, caps, cap clips, rotors, and more. We restore most distributors for Porsche 356, 911, 912, and 930 engines up to 1989.