Bosch Platinum Spark Plug

Pure platinum technology with a unique extended insulator design. If you want to experience quicker starts, smoother acceleration and top fuel efficiency, Bosch Platinum is the spark plug for you. Only Bosch Platinum features a pure platinum center electrode that's heat-fused into an extended ceramic insulator to eliminate air gaps which exist in platinum alloy-tipped plugs. This superior design reaches its self-cleaning temperature faster. And with a lower ignition voltage requirement, Bosch Platinum provides reliable starting in hot and cold weather extremes and provides a more reliable spark at higher RPM's without misfires.   Features Benefits Only Bosch uses a pure platinum center electrode heat-fused into an extended insulator Reaches self-cleaning temperature only seconds after starting Electrode gap remains virtually unchanged throughout the plug's longer service life; no need to clean or re-gap   Heavy-duty tapered ground electrode For extended service life, reduced electrode temperature, and improved access to air/fuel mixture   Nickel-plated rolled threads For complete anti-seize and corrosion protection Lower ignition voltage requirement vs. other plug designs For reliable cold weather starts and superior operation under all driving conditions.