Cummins Inc. designs, manufactures, distributes, and services diesel and natural gas engines, and powertrain-related component products worldwide. It operates in five segments: Engine, Distribution, Components, Power Systems, and Electrified Power. The Engine segment manufactures and markets a range of diesel and natural gas powered engines under the Cummins and other customer brands for the heavy-and medium-duty truck, bus, recreational vehicle, light-duty automotive, construction, mining, marine, rail, oil and gas, defense, and agricultural markets. It also offers new parts and services, as well as remanufactured parts and engines.

The Distribution segment distributes parts, engines, and power generation products; and provides service solutions, such as maintenance contracts, engineering services, and integrated products. The Components segment offers emission solutions; and turbochargers for light-duty, mid-range, heavy-duty, and high-horsepower diesel markets. It also provides air and fuel filters, fuel water separators, lube and hydraulic filters, coolants, fuel additives, and other filtration systems; and fuel systems for heavy-duty on-highway diesel engine applications, as well as remanufactures fuel systems.

The Power Systems segment offers back-up and prime power generators, controls, paralleling systems, and transfer switches, as well as A/C generator/alternator products under the Stamford, AVK, and Markon brands. The Electrified Power segment provides electric and hybrid powertrain systems; and battery modules, packs, and systems for commercial, industrial, and material handling applications. The company sells its products to original equipment manufacturers, dealers/distributors, and end users. The company was formerly known as Cummins Engine Company and changed its name to Cummins Inc. in 2001. Cummins Inc. was founded in 1919 and is headquartered in Columbus, Indiana.