Bosch Original Equipment Crankshaft Position Sensors provide accurate detection of engine speed - engine speed is the main control variable for ignition timing. Bosch Original Equipment Crankshaft Position Sensors aren't just a quality replacement component, they're the same sensor your vehicle was equipped with when manufactured - minus the expense of brand name packaging. Robust design features precise digital measurement of rotational speeds, high resistance against external interference, and a wide temperature range that withstands extreme hot and cold operating conditions. Bosch Crankshaft Position Sensors deliver the precision operation and long service life your vehicle needs for maximum performance, lowest emissions, and optimum fuel mileage.