Peterbilt Motors Co.
Peterbilt Natural Gas New Medium Duty 62434823dbc96

Peterbilt debuts natural gas engine option in two new MD trucks

March 30, 2022
OEM, which first started natural gas adoption in 2007, touts its commitment to sustainability as it ports Cummins B6.7N power plant to medium-duty models 536 and 537.

Peterbilt Motors Co. on March 29 announced that the Cummins B6.7N natural gas engine will be available on the OEM’s medium-duty models 536 and 537.

The two MD models were introduced last year and are aimed at the lease and rental segment and the vocational markets, respectively.

Peterbilt advertises the MD 536 as the “perfect truck to showcase the latest B6.7N engine,” the OEM said in a release, with 200 to 240 horsepower and 520 to 560 lb.-ft. of torque available while expelling 50% lower NOx emissions than required under current U.S. Environmental Protection Agency standards.

See also: Hydrogen fuel cell proponents offer a 'third way' to zero emissions

According to Peterbilt, the Class 6 model 536, which doesn’t require a CDL to operate, is designed to provide drivers class-leading performance with a low cab entry height, good visibility, low NVH (noise, vibration and harshness), and room for three people within a cab that is 2.1 meters (6.88 feet) wide.

The 536 also has a 7-inch digital display located in the instrument cluster and features a digital card system integrated with the latest Peterbilt safety systems.

In 2007, Peterbilt introduced NG engines into its lineup as an option on the model 320 and has continued to incorporate the engines into the Peterbilt lineup since. Today, three NG engine platforms are available in several Peterbilt models.

Medium-duty trucks can be configured with the just-introduced B6.7N and the L9N featuring 300 to 320 horsepower and 860 to 1,000 lb.-ft. of torque. Peterbilt heavy-duty models 520, 567, and 579 also can be ported to the ISX12N natural gas engine, which has an output of 400 horsepower and 1,450 lb.-ft. of torque.

“Natural gas engine offerings have been part of the Peterbilt portfolio since the introduction of our first CNG-powered vehicles in 2007. The introduction of the B6.7N is the latest example of our environmental stewardship and ongoing commitment sustainability, extending our near-zero emissions solutions to more applications,” said Scott Newhouse, Peterbilt’s chief engineer.

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