Designed from galvanized aluminum with anti-corrosive coating, Dorman's Tachometer Sensor withstands extreme under-hood temperatures to resist brittleness and cracking. The Sensor effectively and reliably determines engine speed in order to optimize shift points. Product Features:Direct replacement for a proper fitEasy to install -- just plug the harness into the sensorIncludes hardware (where applicable)High-quality construction ensures long-lasting performance