Sierra International Thunderbolt Hei Distributor 18-5471. Features battery powered (HEI) High Energy Ignition. Uses a Hall-Effect type sensor to trigger ignition accurately even at extremely low RPM. Designed as a direct replacement for Mercury...
Sierra International Thunderbolt Hei Distributor 18-5471. Features battery powered (HEI) High Energy Ignition. Uses a Hall-Effect type sensor to trigger ignition accurately even at extremely low RPM. Designed as a direct replacement for Mercury...