This DENSO 196-4002 Engine Crankshaft Position Sensor replaces 23731-1VA0A, 23731-EN20A, 5S11486, CSS1286, CSS1786, PC786, SU12939, Echlin CSS1286, BWD CSS1786, Datsun/Nissan 23731-1VA0A, Datsun/Nissan 23731-EN20A, Airtex 5S11486, Standard Ignition PC786, Wells SU12939, OEM parts and is perfect for replacement or a performance upgrade. .