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Cummins L9N
Cummins L9N



The 2018 L9N continues the evolution of emissions-leading natural gas engines from Cummins Westport. Certified to the California Air Resources Board and Environmental Protection Agency's (EPA) Optional Low NOx emissions standard of 0.02 g/bhp-hr, it has 90% fewer NOx emissions than the current North American EPA standard. Offering 320 hp / 1,000 lb-ft torque, with improved performance and reliability, the near-zero emissions L9N is a great fit for transit, refuse, and truck applications.

Cost Effective Emission Reduction

Reduces smog forming NOx emissions by 90% vs. EPA NOx Standard

Can operate with 100% CNG, LNG, or renewable natural gas (RNG)

Significant GHG reductions with the use of RNG. Learn more with Cummins Westport GHG Emissions Calculator.

Natural gas is the lowest carbon fuel available, with abundant domestic supply and stable pricing

Fueling infrastructure in place and growing

No infrastructure changes are required for current natural gas fleets


Builds on all the latest improvements of the ISL G engine, with improved reliability and durability

New electronic engine, ignition, and On-Board Diagnostics (OBD) emission control features.

New engine control module – ECM model number CM2380.

Closed Crankcase Ventilation system for more complete combustion and lower emissions.

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