Natural gas

Natural gas
Peterbilt, Kenworth add Cummins B6.7N as option on models 536, 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.
March 31, 2022
The non-CDL Class 6 Model 536 is designed with a low cab entry height, improved visibility, low NVH and room for 3 people within the 2.1m wide cab.
Natural gas
Cummins set to debut 15-liter natural gas engine
Currently, Cummins Westport's ISX12 G and ISX12N are the largest displacement natural gas engines available, kicking out up to 400 hp and 1450 lb-ft of torque. The segment is otherwise comprised of 6- and 9-liter models.
October 14, 2021
Cummins Westport ISX12G
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