Cummins Inc. is a Fortune 500 company headquartered in Columbus, Indiana that designs, manufactures, and services diesel engines and related technologies through five business units: the Cummins Engine Business, Cummins Power Generation Business, Cummins Filtration, Cummins Turbo Technologies, and Cummins Emission Solutions. Its main competitors include Caterpillar Inc., Deere and Company, Detroit Diesel, Perkins Engine Company, and Kohler Company.