Cummins Turbo Technologies is the world's largest designer and manufacturer of turbochargers for the medium-heavy duty diesel engines market and has a reputation for producing innovative and dependable solutions for specific product requirements of this key market sector. Its Holset brand is the best known in the industry having developed an enviable reputation in pursuit of improved engine efficiencies and emissions reduction in on- and off-highway, marine and power generation applications worldwide.

Cummins Turbo Technologies was founded in Huddersfield, UK in 1952. The Huddersfield technical headquarters engineered and launched the first straight vane variable geometry turbocharger in the 1990s. Other technical, sales and manufacturing facilities are located in Brazil, India, UK, USA and China ensuring support for engine and vehicle makers across the world.

Cummins Turbo Technologies is a business unit of Cummins Inc., the largest independent maker of diesel engines and related products in the world with operations in more than 190 countries, 40,000 employees and revenues of $10.8 billion in 2009.