Cummins Natural Gas

Natural Gas Overview


As the fueling infrastructure for natural gas becomes increasingly plentiful, more and more delivery, distribution and regional fleets are seeking to leverage the benefits of this fuel. Dedicated, factory-built, natural gas engines, the Cummins ISL G and ISX12 G are proven alternative-fuel solutions.

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The ISL G shares much of its design with Cummins L Series diesels, including the same full-skirted block for increased rigidity and strength. The design provides superior piston ring and bearing life, improved coolant flow and targeted-piston cooling. With five available ratings from 250-320 hp, and 660-1000 lb-ft of torque, the high torque and broad power band of the ISL G is ideal for delivery and drayage applications up to 66,000 pounds GCW.


The ISX12 G is based on the Cummins ISX12 diesel platform. Featuring the same proven EGR, spark ignition and simple aftertreatment as the Cummins ISL G engine, the ISX12 G delivers strong pulling power with heavy-duty durability. With five available power ratings from 320 to 400 hp, and 1150-1450 lb-ft of torque, the ISX12 G is well-suited for regional-haul and LTL distribution applications up to 80,000 pounds GCW.

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