For more than three-quarters of a century, Cummins has been a leader in American diesel making. From small-scale operation to global industrial giant, Cummins has thrived by focusing on a central tenet: serve customers by building high-quality, technically-advanced products. This tradition has deep roots. Cummins manufactures engines and aftermarket products for heavy- and medium-duty trucks, buses, RVs, and light commercial vehicles, and for equipment in the construction, agricultural, mining, marine, rail and government markets. The Cummins Power Generation Business is a global provider of electric generators, power systems, and related accessories, components and services. Products include diesel and gas generators used in recreational vehicles, commercial vehicles, and pleasure boats plus diesel and gas generator sets, transfer switches, and switchgear used in commercial facilities for emergency back-up and prime power. Cummins Filtration Business provides Fleetguard and Nelson filters, silencers and exhaust systems