Engine Crankshaft Position Sensors measure crankshaft location to detect misfire and control engine timing. Dorman's Engine Crankshaft Position Sensors are constructed of high quality plastic with metal reinforced mounting points to protect against failure. 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.