Peterbilt is adding the Cummins B6.7N natural gas engine as an option to its medium duty models 536 and 537. The engine features a power range of 200 to 240 horsepower and 520-560 lb-ft torque while emitting 50% lower NOx emissions than current EPA standards. Peterbilt introduced natural gas engines into its medium duty lineup in 2007 as an option on the Model 320. Today, three natural gas engine platforms are available in several Peterbilt truck models. Medium duty trucks can be configured with the B6.7N or the L9N, featuring 300-320 HP and 860-1,000 lb-ft torque. Heavy duty trucks, including the Model 520, Model 567 and Model 579, can be outfitted with the ISX12N and its 400 HP and 1,450 lb-ft of torque. https://ift.tt/AjlJRU4
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