Williams Controls Snapshot
You want the truck driver behind you on the highway to be able to control his speed, and so does Williams Controls. The company's primary business is the manufacture of electronic throttle controls for commercial trucks, buses, RVs, and off-highway equipment. Williams Controls also makes pneumatic throttle controls for diesel heavy-duty vehicles. Major customers of Williams Controls include Volvo (19% of sales), PACCAR (11%), Daimler Trucks North America (8%), Navistar (9%), and Caterpillar (8%). The company makes more than half of its sales in the US.