The X10 Engine: The Next Step in Engine Evolution

The Cummins X10™ engine marks a bold new chapter in the evolution of mid-bore engines. Built on the proven legacy of the L9 and X12, the X10 redefines performance, reliability, and versatility for today’s most demanding commercial applications. Delivering up to 450 horsepower and 1,650 lb-ft of torque, the X10 gives customers the muscle they need to tackle tough jobs.

The X10 is not just another engine, it is a next-generation platform designed to keep your business running efficiently. Whether you operate in vocational or municipal fleets, this engine helps you take the next step in performance, with up to 2% improved fuel economy over previous generations.

One Engine, Many Jobs

The X10 is designed to work across a wide range of duty cycles. This makes it the ideal solution for multiple industries, helping simplify fleet operations while improving consistency and dependability. Whether hauling freight, responding to emergencies, or powering transit fleets, the X10 delivers operational integrity performance across the board.

The X10 is optimized for:

• Vocational Applications
• Pickup & Delivery
• Regional Haul
• Transit Bus Fleets
• Emergency Response Vehicles

With adaptable ratings and robust capabilities, the X10 gives OEMs and fleet managers one engine that can do the job of many, helping streamline maintenance, inventory, and training.

Built for the Toughest Jobs

For more than 40 years, the Cummins L9 has set the standard for mid-bore durability. Known as a true workhorse engine, the L9 earned its reputation with a wide horsepower and torque range, unmatched uptime, and trusted performance.

Now, the X10 builds on that legacy, delivering up to 1,650 lb-ft of torque, with higher ratings than the L9 and similar capabilities to the X12. That means it has the strength to power through the toughest conditions, while remaining lightweight and efficient.

The X10 includes several durability-focused features:

• Enhanced Front and Rear Engine Power Take-Off (REPTO/FEPTO) capabilities, increasing its flexibility for vocational equipment.
• A wet-sleeve cylinder design, recognized for better serviceability and long-term durability.
• Integrated braking power of up to 475 horsepower, helping drivers maintain control on steep grades and reducing wear on service brakes.
• Optional transmission-mounted braking, offering enhanced control and performance in demanding applications.

The X10 was designed for real-world conditions—just like its predecessors—but with added intelligence and fuel-saving features that meet the demands of tomorrow’s fleets.

Stay on the Road Longer

Downtime costs money. The X10 is engineered to keep trucks on the road and out of the shop. With extended maintenance intervals, fewer service interruptions, and a simplified design, the X10 helps fleet managers stay focused on moving freight, rather than making repairs.

For service, X10 customers can count on Cummins' extensive North American support network, the same network trusted by X12 users today. When maintenance is needed, parts and expertise are never far away.

Additionally, over-the-air updates allow the X10’s engine control module (ECM) software to be updated remotely, with customizable timing and location settings. This helps ensure your engine is always running the latest software, without requiring downtime or manual updates at a service center.

Lower Costs, Smarter Operation

The X10 engine was built to optimize the total cost of ownership, without sacrificing performance.

Compared to the X12, which was already one of the lightest engines in its class, the X10 is significantly lighter. That means more payload, better fuel economy, and greater packaging flexibility.

The X10 also introduces new maintenance-friendly design features, including:

• Cartridge-style filters that allow the filter media to be replaced individually, rather than swapping the entire unit. This design can reduce maintenance costs by up to 30%, cutting waste and lowering shop time.
• Automatic Engine Shutdown, which turns the engine off during extended idle periods. This reduces unnecessary fuel consumption and engine wear, improving long-term efficiency.
•  A targeted 4% improvement in fuel economy over the current L9, helping fleets reduce operating costs and environmental impact.

By combining lightweight design, efficient operation, and long-life components, the X10 helps fleets of all sizes manage costs while improving performance.

X10 New Platform, Same Trust

Fleets and drivers across North America already know and trust the Cummins L9 and X12. These engines are respected for their durability, fuel economy, and broad versatility. The X10 is the natural next step in that legacy, bringing together the workhorse power of the L9 with the lightweight benefits of the X12.

With its mid-bore architecture, high-performance ratings, and Cummins-engineered durability, the X10 offers a perfect balance of power, packaging, and performance. It is ready to lead the way, and it is built to help customers succeed for years to come.

The Cummins X10 engine is more than an update. It is a revolution in mid-bore engine design, created to serve the needs of today’s most demanding on-highway applications, while preparing fleets for the challenges of tomorrow. Backed by decades of Cummins experience and support, the X10 delivers power, durability, and efficiency in one platform.