Cummins Turbo Technologies is the market‐leading designer and manufacturer of turbochargers for the medium to heavy-duty diesel engines market and has a reputation for engineering innovative technologies and dependable systems in partnership with customers. Its Holset brand is well 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. Holset Engineering was founded in Huddersfield, UK in 1952, bought by Cummins Inc. in 1973, and changed its name to Cummins Turbo Technologies in 2006. 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, China, India, UK and the USA ensuring support for engine and vehicle makers across the world. Cummins Turbo Technologies is part of the Components Business within Cummins Inc., the largest independent maker of diesel engines and related products in the world with operations in more than 190 countries, 55,000 employees and revenues of $19.1 billion in 2015.

General Information

Cummins Turbo Technologies is a business unit within the Components Group, part of Cummins Inc.

  • Company name: Cummins Inc.
  • Stock Symbol: CMI (traded on NYSE as Cummins Inc)
  • Chairman / CEO, Cummins Inc. Tom Linebarger
  • 2015 sales revenues: US $19.1 billion
  • General Manager, Cummins Turbo Technologies: Mahesh M Narang
  • Cummins Turbo Technologies Employees: Over 3,400 worldwide


Company structure/operations

Corporate structure: Cummins Turbo Technologies is one of the business units within the Cummins Components Division comprising Cummins Filtration, Cummins Emissions Solutions and Cummins Fuel Systems.

Major products: Fixed and variable geometry, wastegate, two‐stage systems and turbocompound systems; waste heat recovery turbine expander.

Global Markets: Cummins Turbo Technologies provides product including parts and service support to all global markets.

Applications: Experience in many different application sectors including heavy, medium and light duty truck markets and commercial vehicle, bus, train, marine, construction, industrial, mining, agriculture and power generation

Cummins Turbo Technologies has technical, manufacturing and customer support centres in many locations worldwide, including:



- Company incorporated in 1952 as Holset in Huddersfield, West Yorkshire, UK

- Purchased by Cummins Inc. in 1973

- Turbocompounding system developed in partnership with major customer in 1993

- Engineered and released Holset VGT ™ from the Huddersfield technical centre in 1998, the first straight vane variable geometry turbocharger

- Renamed Cummins Turbo Technologies in 2006

- Cummins Inc became the first company to meet the 2010 U.S. EPA emissions standards for nitrogen oxides with its 6.7 litre Dodge Ram pickup engine featuring Holset VGT™

- Cummins Turbo Technologies launched new small turbocharger range for 2 – 6 litre diesel engines at IAA Hannover September 2010 and Beijing Engine Show November 2010

- New Waste Heat Expander technology unveiled at Mid America Truck Show, Louisville, KY, USA, March 2012 and Institution of Mechanical Engineering Turbocharger Conference, London, UK May 2012

- Celebrated 60 years of engineering excellence in 2012

- Introduced the Series 900 to the already robust and flexible large product range, Series 800 and Series 1000, creating the most efficient and diverse turbochargers we have ever produced for the 16 litre and above engine range.

- Showcased next generation technologies at IAA Hannover 2014, including Holset M2 Two-stage system with Rotary Turbine Control (RTC), Electrical Waste Heat Recovery Turbine Expander prototype, Next Generation HE300VG and Electric Wastegate.

- Official launch of the new Two-Stage turbocharger that powers the All New 2016 Nissan TITAN XD at the Mid-America Trucking Show (MATS). The next generation Two-Stage System with Rotary Turbine Control (RTC) is Cummins’ most sophisticated turbocharger to date, delivering high efficiency, excellent driveability and low emissions levels.