The Genuine GM 19420911 Camshaft Position Sensor is a direct OEM replacement designed for all 1999–2006 Gen 3 LS engines including 4.8L, 5.3L, 5.7L, and 6.0L applications. This sensor provides precise camshaft timing data to the engine control module, ensuring accurate ignition timing, fuel delivery, and smooth engine operation. Built to exact GM factory specifications, it eliminates misfire issues and erratic timing signals caused by worn or aftermarket sensors. Ideal for LS1, LM7, LQ4, LQ9, LS6, LM4, and LR4 engines, the GM 19420911 sensor installs easily with the factory connector and seal. Restore the reliability and performance of your LS engine with genuine GM quality and long-lasting durability.