Cummins is a global leader in designing and manufacturing diesel engines and related parts. It has manufacturing plants and facilities in several countries. The company’s headquarters is located in Columbus, Indiana, USA, where much of its engineering and development occurs, but Cummins diesel engines are made in various locations worldwide. 

Locations where Cummins diesel engine is made:

1. United States

• Jamestown Engine Plant, New York: It is said to be “the world’s largest heavy-duty diesel engine plant” and manufactures engines such as the ISM and L10.
• Columbus Midrange Engine Plant, Indiana: Produces the ISB and other midrange engines.
• Columbus Engine Plant, Indiana: Manufactures ISX cylinder blocks and heads as well as light-duty diesel engines.
• Cummins Industrial Center, Seymour, Indiana: Manufactures K19, V903, and QSK19 engines.
• Cummins Komatsu Engine Company, Seymour, Indiana: Produces diesel engines for industrial markets, including the Cummins B Series diesel and the QST30.
• Rocky Mount Engine Plant, North Carolina: Produces the B3.9/4.5/5.9 C8.3, ISB, ISC, QSB, ISL, QSC, and QSL engines.
• Cummins Natural Gas Engines, Inc., New Mexico: Manufactures G/GTA 5.9, 8.3, and 855 GTA 14, 19, 28, 38, and 50 natural gas engines.
• Cummins Marine Charleston, South Carolina: Produces marine propulsion engines from K19 to QSK 60 and marine auxiliary engines from B3.9 to QSK 60.

2. United Kingdom

• Darlington Engine Plant: Produces engines like the B3.9/5.9 B4.5/6/7 C8.3, ISB, ISC, ISL, QSB, QSC.
• Daventry Engine Plant: Manufactures engines such as the K38/50, QSK45/60, QSK78 WS VS 81/91, and QSK19 rail power packs.

3. China

• • Chongqing Cummins Engine Company Ltd.: Produces the M11 NT K19/38/50 engines.
  • Dongfeng Cummins Engine Co. Ltd., Wuhan: Manufactures the B3.9/5.9 C8.3 engines.
  • Xi’an Cummins Engine Company: Produces the M11, QSM11, and ISM engines.
  • Beijing Foton Cummins Engine Co., Ltd.: Manufactures ISF2.8, ISF3.8, and ISG engines.

4. India

• Cummins India Ltd., Pune: Manufactures engines for off-highway applications like excavators, tractors, haul trucks, cranes, and generators, among others, as well as N14/NT K19 V28 K38/50 OSK 60 generator sets.
• Cummins India Ltd., Daman: Produces generator sets and natural gas engines.

5. Other Countries

• Cummins Brasil Ltda., Guarulhos, Brazil: Produces the B3.9/5.9 C8.3 NT/N 14 ISB ISM generator sets.
• Komatsu Cummins Engine Company Ltd., Oyama, Japan: Manufactures the B3.3 B3.9/5.9 C8.3 engines.

Cummins diesel engines are made at manufacturing plants across the globe, with major facilities in the United States, the United Kingdom, China, India, Brazil etc. These plants cater to regional markets, ensuring that Cummins can efficiently supply engines and parts to meet the diverse needs of industries worldwide.