Engine Camshaft Position Sensors are used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. Dorman Engine Crankshaft Position Sensors have undergone extensive vehicle try-on and durability testing to ensure strength, fitment and longevity. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.