Cummins updated its 2027 on-highway product launch plans for its X10 and X15 engines, the company announced Thursday.
This is after a review of Environmental Protection Agency (EPA)'s recently proposed changes to emissions regulations.
"Our long-term product strategy has not changed," says Jennifer Rumsey, chair and CEO at Cummins. "This is about improving the transition, not changing the destination."
[RELATED: Cummins updates DEF engine calibrations to comply with EPA guidance]
The company will use the implementation flexibilities outlined by the EPA for a measured transition to its new HELM engine platforms. The approach is designed to maintain regulatory compliance, support customer production schedules and provide additional time to ramp production in a disciplined manner that helps ensure a successful transition for the industry.
"A phased production ramp will allow us to support customers while building confidence in our new products through real-world operation and maintaining our focus on quality," Rumsey says.
X15 transition
Cummins will begin limited production of its 2027 X15 engine in January based on OEM launch plans. Production will ramp up progressively with full production expected by the fourth quarter. During the transition, Cummins says its current X15 engine will remain available to provide a smooth transition.
X10 transition
Cummins says limited production of the 2027 X10 will also begin in January with full production in the third quarter, based on OEM launch plans. During the transition, the current X12 and L9 engines used in trucks and transit buses are expected to remain available.
Both the 2027 X10 and 2027 X15 are part of the fuel-agnostic HELM platform, designed to deliver improved fuel economy, similar diesel exhaust fluid consumption and reliability, Cummins says.
The next-generation B platform is expected to launch in January 2028. The current B6.7 will remain available through 2027 to support customer production schedules and ensure a smooth transition to the new platform.
Cummins says it's continuing to work with OEMs, fleets, dealers and other partners to align product availability and time the launch. The updated product plan is based on the company's assessment of the language currently in the EPA rule and may change. Product plans and timing may be adjusted if the final rule differs materially from the current proposal, Cummins says.
