Peterbilt 520 and 320 Models with Cummins Westport ISL-G NZ Join CARB Project

| USA, Denton TX
Peterbilt 520 with Near Zero engine

Peterbilt Model 520

Peterbilt Motors Company, which introduced the Cummins Westport ISL-G Near Zero NOx emissions natural gas engine for its Vocational Truck models 567, 520 and 320, has announced Peterbilt Models 520 and 320 equipped with this engine have been granted eligibility for the California Air Resources Board (CARB) Hybrid and Zero-Emission Truck and Bus Voucher Incentive Project (HVIP).

HVIP encourages the commercialization of low-emitting hybrid and zero-emissions trucks by assisting fleets with purchase of these advanced technology vehicles. NOx emissions in the ISL-G Near Zero engine emissions are 90 percent lower than the current EPA limit.

The Near Zero engine offers customers the performance and efficiency of the familiar ISL-G with 320 horsepower and 1,000 lb-ft torque. The engine is designed to operate on 100 percent natural gas in compressed (CNG), liquefied (LNG), or renewable natural gas (RNG) form and is ideal for vocational, refuse and linehaul applications.

“Eligibility for the HVIP voucher will allow customers participating in the program to benefit from the advanced technology and rugged durability of the Models 520 and 320,” said Robert Woodall, Peterbilt Assistant General Manager of Sales and Marketing.

The 2018 Models 520 and 320 will be eligible for HVIP when spec’d with the Cummins ISL-G Near Zero engine with a GVWR of 33,000 – 80,000 lbs. Registered dealers will receive vouchers for qualifying customer purchases. For more details, visit

(Source: Peterbilt Motors Company)

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