Dayco, a division of Mark IV Industries, is a leader in the research, design, manufacturing and distribution of a broad range of belts, tensioners and pulleys for the automotive, trucking, construction, agricultural and industrial markets.Recognized by both original equipment manufacturers and the automotive aftermarket as an innovative, technology-driven organization, Dayco operates a fully integrated global network of manufacturing facilities, distribution centers, technical centers and sales offices employing a workforce of nearly 3,000 employees.