Bosch offerings in the high performance arena include factory replacement fuel injectors, spark plugs and premium oxygen sensors. Bosch Iridium and Platinum spark plugs are the most well known of the Bosch product line. Bosch Iridium spark plugs have an Iridium and platinum electrode produces a longer and more powerful spark than traditional plugs. Bosch Platinum plugs offer quicker starts, smoother acceleration and increased fuel efficiency. JEGS carries Bosch spark plugs at everyday low prices!