X15N
The Cummins X15N is the industry’s first 15-liter natural gas engine purpose-built for heavy-duty and long-haul applications. Built to integrate seamlessly into existing, demanding operations, the X15N delivers power and performance while providing a practical path to reduced fuel costs and emissions. The X15N runs on natural gas and renewable natural gas (RNG), helping you move confidently toward a lower-carbon future—without reinventing how you work today.
Power
Torque
Certification
Product Availability
Applications
Uptime:
The X15N is designed for maximum uptime, providing enhanced reliability. Real-time over-the-air calibration and trim update capability, remote monitoring, and other reliability-enabled digital features prevent unplanned downtime. And of course, X15N owners can rely on Cummins service and support network, connecting them to service locations and technicians sooner so trucks can get back on the road.
Lower total cost of ownership:
The X15N is built with cost savings in mind, demonstrating up to a 10% fuel economy improvement compared to the preceding ISX12N. Access to competitively priced natural gas can provide fleets with greater fuel cost stability over time, while the passive and maintenance free three-way catalyst aftertreatment system from Cummins Emissions Solutions offers optimal simplicity. Since it's powered by natural gas, the X15N does not require diesel exhaust fluid (DEF).
Refueling and infrastructure:
Natural gas is abundant, relatively affordable, and widely available across North America's infrastructure. Over 300,000 miles of inter- and intrastate natural gas pipelines as well as 2.5 million miles of underground natural gas distribution lines continue to expand as more and more fleets adopt natural gas and further investment is made in the energy sector.
Natural gas can be accessed both publicly and privately in the United States. In compressed form (CNG), there are roughly 1,400 public and private fueling stations for Class 7 and 8 use across the U.S. Comparatively, there are only close to 80 liquified natural gas (LNG) stations. Businesses interested in CNG, however, can build fueling stations on their own premises through fast-fill fueling stations, time-fill stations, or a hybrid combination-fill station making refueling easy and affordable.
Ease of operation:
The X15N was built specifically as a natural gas engine and leverages the Cummins HELM strategy making the X-series a global engine platform that will include multiple fuel types including natural gas, diesel and ultimately hydrogen. X15 models share common components below the head gasket where possible, offering familiarity to users.
The engine aligns with existing service networks and practices, leading to a high level of parts commonality as new platforms enter the market.
The X15N features a fully optimized powertrain feature suite when paired with Eaton Cummins Automated Transmission Technologies, Endurant HD N and XD N along with a Cummins Clean Fuel Technologies Fuel Delivery System.
Sustainability:
Although a natural gas engine is an internal combustion engine, and thus releases some level of greenhouse gas emissions, natural gas vehicles result in a lower overall amount of greenhouse gas (GHG) emissions and particulate matter like carbon dioxide (CO2) and nitrogen oxides (NOx). In fact, the X15N’s CO2 and NOx levels are both 90% below current EPA standards.
Renewable natural gas has seen a boom in adoption in recent years, with supply increasing by more than 200% since 2018. Today, almost 80% of commercial natural gas vehicles in the U.S. are fueled by RNG. With RNG, the X15N has the potential of reaching sub-zero carbon emissions well-to-wheel, allowing for an immediate reduction in total transportation footprint starting day one.
Features & Benefits
Cummins X15N Warranty
The X15N will be backed by a 2 year/250,000 miles warranty with complete engine coverage available up to 5 years/500,000 miles when purchasing the new Protection Plan Plus Extended Coverage offering.
To help configure your X15N powertrain, find and contact your local Cummins Expert or use Cummins PowerSpec Web to develop your own vehicle spec.
The latest digital products and services to support your engine
Cummins' commitment to engine innovation carries through to digital products and services that enhance the entire life of every Cummins engine. This includes connecting real-time data from vehicles on the road to maintenance and service operations, giving customers an unparalleled ability to look ahead, optimize operations, and minimize downtime.
Our engines come available with first-fit connectivity from the point of sale through Acumen®, our smart computing hardware, or via an OEM telematics device. These first-fit devices offer immediate access to Cummins’ full suite of digital capabilities, Connected Solutions®.
- Remote Diagnostics – Real-time monitoring of fault alerts and predictive insights for Cummins engines, helping fleets avoid unplanned downtime and reduce costs
- Over-the-Air Programming – Optimize your Cummins engine’s performance and efficiency by updating software and parameters remotely over-the-air
- Digital Service Tools – Guidanz® is Cummins’ all-in-one servicing technology suite that helps increase service bay productivity, repair speed and workflow management for a legendary service experience