Cummins and Navistar are extending their long-term agreement through the next two emission cycles, with Cummins being selected as Navistar’s preferred supplier of medium-duty and heavy-duty big bore engines for International Trucks and IC Buses in the US and Canada.

“We’re excited to deepen what is an already strong partnership with Navistar, spanning more than 80 years,” said Cummins president, Engine Business,  Srikanth Padmanabhan.

“Navistar is a critical partner to Cummins and we believe the International LT Series trucks paired with the Cummins X15 Efficiency Series and Eaton Cummins Endurant HD transmission provides the best fuel economy, improved uptime and overall TCO for our mutual long haul customers.”

Cummins launched the 2021 Greenhouse Gas complaint X15 Efficiency Series engine this year.

“The Cummins engine paired with Navistar International vehicles showcase technology-driven innovation that delivers the performance heavy-duty customers have come to expect to meet the demanding transportation needs of today and tomorrow,” added Padmanabhan.

“Extending this relationship through a long-term partnership ensures that both companies will be able to collaborate and meet the challenges of the next emissions cycles and beyond.”

The Cummins B6.7 and L9 engines will continue to power the International MV and HV Series trucks, as well as Navistar’s IC Bus CE and RE Series school buses.