The SM21 T/S Cam switch is a genuine Shee-Mar product made in the United States, designed for Chrysler, Dodge, and Plymouth vehicles from 1983 to 1990 with a tilt wheel. It is an OE spec switch that controls the turn signal function, specifically designed to interchange with the SM-21 part number. This switch is a quality replacement part that meets the original equipment specifications for a seamless fit and reliable performance in your vehicle.