Cummins specializes in diesel and alternative fuel engines and generators, and related components and technology.

Detroit Diesel Corporation is an American diesel engine manufacturer headquartered in Detroit, Michigan. It is a subsidiary of Daimler Truck North America, which is itself a wholly owned subsidiary of the multinational Daimler Truck AG. 

Caterpillar is the world's leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial turbines.

Komatsu is a global leading manufacturer of construction, mining and forestry equipment as well as forklift and industrial machinery.

Mack Trucks, Inc., is an American truck manufacturing company and a former manufacturer of buses and trolley buses. Founded in 1900 as the Mack Brothers Company, it manufactured its first truck in 1905 and adopted its present name in 1922. 

Waukesha is a brand of large stationary reciprocating engines produced by INNIO Waukesha Gas Engines, a business unit of the INNIO Group.

Superior Truck and Equipment Products, Inc. is a truck service, repair, and sales company located in Lilburn, Georgia, outside of Atlanta.

As part of the Daimler Trucks division, Mercedes-Benz Trucks has been a hallmark of premium quality for more than 100 years now. It stands for reliability and economic efficiency, as well as for first-class product and service quality and comprehensive expertise in the area of customer-oriented transport solutions.

Volvo Trucks is one of the largest truck companies in the world. We sell vehicles and services in more than 140 countries.  

Volvo Trucks produces and sells over 190,000 units annually.

Scania AB is a major Swedish manufacturer headquartered in Södertälje, focusing on commercial vehicles—specifically heavy lorries, trucks and buses. It also manufactures diesel engines for heavy vehicles as well as marine and general industrial applications.

British Leyland was an automotive engineering and manufacturing conglomerate formed in the United Kingdom in 1968 as British Leyland Motor Corporation Ltd 

Bedford Vehicles, usually shortened to just Bedford, was a brand of vehicle manufactured by Vauxhall Motors, then a subsidiary of multinational corporation General Motors. Established in April 1931, Bedford Vehicles was set up to build commercial vehicles. 

Leyland Motors Limited (later known as the Leyland Motor Corporation) was a British vehicle manufacturer of lorries, buses and trolleybuses.

Tata Motors Limited, a USD 37 billion organisation, is a leading global automobile manufacturer with a portfolio that covers a wide range of cars, SUVs and Trucks

The Lister Auto-Truck was a small monowheel tractor built for moving light loads around factories, railway yards and similar sites.

Nissan Motor Co. is a Japanese multinational automobile manufacturer headquartered in Yokohama, Kanagawa Prefecture, Japan. The company sells its vehicles under the Nissan and Infiniti brands.

Perkins Engines Company Limited, a subsidiary of Caterpillar Inc. since 1998, is primarily a diesel engine manufacturer for several markets including agricultural, construction, material handling, power generation, and industrial. 

Fiat Trattori S.p.A. was a Fiat group company founded in 1919, and was a constructor of agricultural equipment, tractors in particular. 

John Deere is an American corporation that manufactures agricultural machinery, heavy equipment, forestry machinery, diesel engines, drivetrains (axles, transmissions, gearboxes) used in heavy equipment, and lawn care equipment. 

Ursus SA (often stylized URSUS SA) is a Polish agricultural machinery manufacturer, headquartered in Lublin, Poland. 

Zetor is a Czech agricultural machinery manufacturer. Zetor portfolio includes six model ranges with power outputs ranging from 40 to 160 hp (30 to 120 kW).

Belarus is a series of four-wheeled tractors produced since 1950 at Minsk Tractor Works, MTZ in Minsk, Belarus. These tractors are very well known throughout the Commonwealth of Independent States and are exported to more than 100 countries worldwide, including the United States and Canada.

The International Harvester Company  was an American manufacturer of agricultural and construction equipment, automobiles, commercial trucks, lawn and garden products, household equipment, and more.

Massey Ferguson Limited is an American agricultural machinery manufacturer. The company was established in 1953 through the merger of farm equipment makers Massey-Harris of Canada and the Ferguson Company of the United Kingdom.

Universal (UTB) tractors were built in Brasov, Romania beginning in 1946. The company began as Universal Traktoren Brasov or (UTB), but the name was changed in 2000 to Tractorul UTB S.A. Universal began building tractors under licensed from Fiat.