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Peterbilt Offers Cummins ISL-G Near Zero Emissions Engine


Peterbilt Motors is now offering the Cummins Westport ISL-G Near Zero NOx emissions natural gas engine for Peterbilt models 567, 520 and 320. The ISL-G Near Zero engine emissions are 90 percent lower than the current EPA NOx limit through the introduction of a unique three-way catalyst in the after-treatment, advanced engine calibration and a closed crankcase ventilation system.

“Peterbilt is producing increasingly efficient products,” said Scott Newhouse, Peterbilt Chief Engineer. “The addition of the ISL-G Near Zero emissions engine strengthens Peterbilt as an environmental leader.”

The new engine’s performance and efficiency match the current ISL-G, with 320 horsepower and 1,000 lb-ft torque available. Customers with line-haul, vocational and refuse applications will benefit from the efficient option. The Cummins ISL-G Near Zero emissions engine will become available for production in Models 520 and 320 by year-end. The new engine will become available in the Model 567 in early 2017.