Crankshaft Sensor Crank Position Sensor 56026884 1 piece 56026884 Crankshaft Position Sensor for Wrangler Grand Cherokee 4.0L Improved Performance: Detects engine speed, piston end position, and ignition cylinder end signals, providing optimal performance and fuel efficiency. High Quality: The crankshaft position sensor is made of good plastic and metal, durable and can be used for a long time. The crankshaft position sensor provides good performance for the car's crankshaft. It can be easily installed, please confirm your car model and OE number before ordering.