The Mack CH And MR 1990 Through 2003 Magnetic Tachometer Sensor is a reliable and durable solution for replacing a failed original sensor. Made from quality components, this sensor ensures reliable performance and a long service life. It is a direct replacement for specified vehicles, fitting most Mack 1990-2003 CH And MR Models with Magnum 430HP Engines. With its plastic connector material and disconnect connector type, this sensor is designed to match the fit and function of the original sensor. Its practicality and direct OE replacement number, 64MT435, make it an ideal choice for those in need of a dependable tachometer sensor.