Don't take chances with an old, questionable, or malfunctioning camshaft position sensor that can leave you stranded. Camshaft position sensors read the camshaft position and relay this information to your vehicle's ECM. This information is required for functions such as initiating injection on sequential injection engines, the trigger signal for the magnet valve on pump valve injection systems, and for cylinder-specific knock control. Standard Motor Products replacement cam position sensors are designed to exceed OEM specifications for accurate, reliable, maintenance-free operation. Trust your vehicle's engine management system needs to Standard Motor Performance.