Whether you’re running big rigs, monster trucks, or fierce four-wheelers, you know the importance of light, medium, and heavy duty differentials. You know they do more than spin wheels. As the final gear reduction that slows a transmission’s rotational speed, differentials distribute power and provide protection. That’s why serious drivers crave custom differentials designed to support specific use of specific vehicles. And JW Cookson Co. in New Philadelphia, Ohio is the source of these and other light, medium, and heavy duty truck parts. With a website that makes getting the good stuff easy, this company satisfies customers in Carroll County, Ohio; Coshocton County, Ohio; and the rest of the US.