Founded in 1964, Clarke Power Services is a distributor of engines and transmissions manufactured by Detroit Diesel Corporation and Allison Transmission. The company has an inventory of replacement parts and components. It employs more than 300 individuals. Clarke Power Services offers roadside assistance, 24 hour emergency response and equipment testing services. The company provides metal couplings and driveshaft for electric-driven fire pumps. It offers a variety of training courses for students and employees. In addition, Clarke Power Services provides automatic transfer switches, generator sets and power units. Headquartered in Cincinnati, the company maintains services locations in Indiana, Kentucky, Illinois, Missouri, Tennessee, Mississippi and Arkansas.