Cummins is delaying the launch of its 10-liter X10 and the new 7-liter B-Series engines, multiple dealers and OEMs have confirmed to CCJ. For calendar year 2027, Cummins will continue offering the B6.7 engine, delaying the launch of the B7.2 until 2028. Since the B6.7 does not meet EPA27 emissions standards, Cummins plans to absorb the non-compliance fines and pass those costs through to the engine's pricing, sources told CCJ.