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Cummins Westport engines are dedicated natural gas automotive engines, and are primarily built for installation into new vehicles. Typical applications are urban transit, shuttle and school buses, medium and heavy duty trucks and tractors, and cab over refuse / vocational trucks, and street sweepers. 

Cummins Westport engines are not conversions, or retrofits.  Cummins Westport does not offer products to "convert" a diesel engine to run on natural gas.

For information on Cummins natural gas engines for off-road, industrial, agricultural, or power generation applications, please visit, or

For information on natural gas conversion options, please visit NGVAmerica or the US Department of Energy Alternative Fuels Data Center.

Head Office

Cummins Westport Inc.
101 – 1750 West 75th Avenue
Vancouver, British Columbia
Canada  V6P 6G2
Tel: 1-604-718-8100
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Engine Related Issues

Visit the Cummins Customer Assistance Page, or Call the Cummins Customer Support line (available Monday through Friday, 7 a.m. – 7 p.m. Eastern Standard Time, except holidays) 1-800-343-7357

If you are located outside of North America, please call the Cummins Customer Support line +1-812-377-3000.

You may also contact us at or via the form below.

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