The ISL G spark ignited natural gas engine meets 2010 U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB) emission standards.  The engine is based on the 8.9 liter diesel automotive (ISL) platform and shares many installation options with the diesel counterpart.

The power to meet your needs. The L9 is the total package. No other engine in its horsepower range has this combination of power, proven reliability and durability. With ratings ranges of 260 hp to 380 hp (194 - 283 kW) and up to 1250 lb-ft (1695 N•m) of peak torque, the L9 is designed to excel in some of the toughest duty cycles. High-strength components and features, like replaceable cylinder liners for easier rebuilding, add life to the engine and add to its residual value.

Featuring a cast-iron parent bore block structurally designed to reduce noise and increase durability, this engine takes performance to the next level. This power engine offers you tremendous flexibility with its electronic-controlled Variable Speed Pressure Limiting Control (VSPLC) option.