Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

Peterbilt Expands Cummins X15N Offerings

Peterbilt has expanded its alternative fuel solutions by making the Cummins X15N natural gas engine available for its Model 579, 567 & 520 trucks.

Peterbilt Expands Cummins X15N Offerings

The Cummins X15N natural gas engine is now available on Peterbilt Model 579, 567 and 520 trucks

Photo: Cummins

1 min to read


You can now spec Cummins X15N natural gas engines in an expanded range of Peterbilt trucks. The Cummins X15N natural gas engine is now available on Peterbilt Model 579, 567 and 520 trucks, Peterbilt announced. Orders are scheduled for production in the 3rd quarter of 2024.

Ad Loading...

In a press release, Peterbilt noted that the X15N is optimized for weight, space and durability. This makes it a good fit for short-haul, long-haul, refuse and construction customers requiring a larger displacement engine that also significantly reduces emissions, the OEM said.

Ad Loading...

“The new Xl5N natural gas engine provides another environmentally friendly solution for Peterbilt customers committed to sustainability and reducing their carbon footprint,” said Jake Montero, Peterbilt assistant general manager, sales and marketing.

Clean Fuel and High Horsepower

The X15N is available with ratings up to 500HP and 1,850 lb.-ft of torque. Cummins said the engine offers up to 10% fuel economy compared to the ISX12N. It also offers improved low speed drivability and extended service intervals for reduced maintenance costs.

The X15N is designed to meet the stringent 2024 and 2027 EPA and CARB regulations.

Customers can place orders for the Cummins Xl5N natural gas engine option through any of Peterbilt's 425-plus dealer locations in North America.

More Fuel Smarts

Solar panels on top of a red Class 8 truck sleeper cab
Equipmentby Deborah LockridgeMarch 15, 2026

Vanair Introduces Solar, Battery Power Ecosystem for Class 8 Trucks

The company’s expanded EPEQ ecosystem includes flexible solar panels, lithium batteries, hydraulic power systems, and a portable fast charger for electric trucks.

Read More →
HDT Talks Trucking thumbnail saying: NACFE's Messy Middle: Which Fuel Wins?
Fuel SmartsMarch 11, 2026

Run on Less “Messy Middle” Data Shows Multiple Paths for Truck Powertrains [Listen]

Listen as Mike Roeth of the North American Council for Freight Efficiency shares insights into battery-electric trucks, natural gas, biofuels, and clean diesel on this episode of HDT Talks Trucking.

Read More →
YouTube thumbnail with Mike Roeth of NACFE saying "NACFE's Messy Middle: Which Fuel Wins?"
Fuel Smartsby Deborah LockridgeMarch 11, 2026

Run on Less “Messy Middle” Data Shows Multiple Paths Forward for Truck Powertrains [Watch]

NACFE's Run on Less - Messy Middle project demonstrates the power of data in helping to guide the future of alternative fuels and powertrains for heavy-duty trucks.

Read More →
Ad Loading...
Mike Kucharski, vice president, JKC Trucking.
Fuel Smartsby Jack RobertsMarch 10, 2026

Trucking Executive Warns Fuel Spike from Middle East Conflict Hitting Fleets Fast

Mike Kucharski, vice president of refrigerated carrier JKC Trucking, says diesel price jumps tied to global instability are squeezing carriers already struggling with weak freight rates.

Read More →
A mechanic in a workshop leans over the open engine compartment of a large yellow vehicle, inspecting components while holding a tablet.
Sponsoredby Kristy CoffmanMarch 9, 2026

Smarter Maintenance Strategies to Keep Trucks Rolling

In today’s cost-conscious market, fleets are finding new ways to get more value from every truck on the road. See how smarter maintenance strategies can boost uptime, control costs and drive stronger long-term returns.

Read More →
Group of researchers and engineers standing next to an electric heavy-duty truck used in Purdue’s wireless charging project.
Fuel Smartsby News/Media ReleaseFebruary 3, 2026

Researchers Demonstrate Wireless Charging of Electric Heavy-Duty Truck at Highway Speeds

Purdue researchers demonstrated a high-power wireless charging system capable of delivering energy to electric heavy-duty trucks at highway speeds, advancing the concept of electrified roadways for freight transportation.

Read More →
Ad Loading...
Illustration showing diesel exhaust fluid pump sign and EPA headquarters
Equipmentby Deborah LockridgeFebruary 3, 2026

EPA Wants to Know: Are DEF De-Rates Really Needed for Diesel Emissions Compliance?

The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations.

Read More →
SponsoredFebruary 1, 2026

6 Dashcam Tactics to Improve Safety & ROI

6 intelligent dashcam tactics to improve safety and boost ROI

Read More →
Fuel Smartsby Deborah LockridgeJanuary 29, 2026

California: Clean Truck Check Rules Still in Force for Out-of-State Trucks, Despite EPA Disapproval

The Environmental Protection Agency said California can’t enforce its Heavy-Duty Inspection and Maintenance Regulation, known as Clean Truck Check, on vehicles registered outside the state. But California said it will keep enforcing the rule.

Read More →
Ad Loading...
Illustration of Department of Justice building superimposed by truck exhaust stacks
Fuel SmartsJanuary 27, 2026

Justice Department Pulls Back on Criminal Prosecution of Diesel Emissions Deletes

The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering emissions systems in violation of EPA regulations. What does that mean for heavy-duty fleets?

Read More →