Rocky Face has outlets or garages where sales and services for diesel engine parts. Diesel engines are constructed differently and thus need specialized servicing. They are usually used in forklifts, material handling, construction and agriculture (such as heavy trucks and trailers), and many garages specialize in servicing and repairing such engines. They can be of various brands, such as Perkins, Yanmar, Isuzu and John Deere Marine. Experienced and certified staff help render proper, quick service. Replacement of engines with lower-pollution varieties is also possible. They may also be authorized spare parts dealer for the engines. The parts replaced are usually covered by a warranty in Rocky Face. Installation services are also available, for both 4 or 6 cylinder models. During engine replacement, cooler and radiators may also be supplied as a kit. Regular servicing and maintenance keeps all vehicles performing optimally.