Mack Trucks seeks certification to meet California emission standards for on-highway trucks

Mack Trucks will now be seeking certification of two new variants of the Mack MP13 engine to meet the California Air Resources Board (CARB) 2024 Omnibus requirements for low nitrogen oxide (NOx) and particular matter emissions standards.

The regulation requires a 75 percent reduction in NOx and 50 percent reduction in PM compared with existing U.S. Environmental Protection Agency standards for engines in Class 8 highway trucks for engine model years 2024 through 2026. Once certified, the new MP13 CARB 2024 Omnibus-compliant engines, rated 425 horsepower and 1,750 lb.-ft. of torque or 455 horsepower and 1,850 lb.-ft. of torque, will be available in the recently launched Mack Pioneer, Mack's newest Class 8 on-highway vehicle. 

Both Mack MP13 engine variants feature the following engine-mounted components:

• A 48-volt alternator, required to support the heated exhaust aftertreatment system and new battery components
• Specialized engine tuning software to support low NOx requirements

"Mack will have a 13-litre engine that will be CARB 2024 Omnibus-compliant once certified, allowing Mack customers in California to have a fuel-efficient and more sustainable diesel engine to meet all of their highway application needs," said Jonathan Randall, president of Mack Trucks North America. "At the same time that Mack is working to ensure its diesel customers have a durable, reliable highway truck, we also continue to invest and investigate other sustainable solutions, such as battery electric and hydrogen fuel cell power."