Cummins X10 Engine Positioned to Boost Heavy-Duty Market Share

Key Details Cummins launched its new X10 engine platform in March 2025, replacing the L9 and X12 models in its North American heavy-duty lineup. The X10 joins the X15 as a core offering for Class 8 trucks and tractors. Company executives expect the new engine to capture additional market share across both medium and heavy-duty segments. Performance Upgrades The X10 delivers significant improvements over the legacy L9 design. The engine adds 70 horsepower and 400 pound-feet of torque while extending oil drain intervals by 25,000 miles. Two ratings are available: heavy-duty up to 450 hp and 1,650 lb-ft torque, and medium-duty up to 380 hp and 1,250 lb-ft torque. Emissions Compliance The X10 meets EPA 2027 nitrogen oxide requirements using a 48-volt electrical system for emissions control. The engine offers vocational appeal with 590 lb-ft continuous and 664 lb-ft intermittent power takeoff capability. Mack Trucks' Granite vocational truck became the first heavy-duty application, with six X10 power profiles available. Why It Matters Brett Merritt, president of Cummins' engine business, emphasized that the X10 opens new market opportunities. The platform's versatility bridges medium and heavy-duty needs, positioning Cummins for stronger market penetration in competitive segments.