#Epa 2027 Nox

2 posts tagged with this topic.

Cummins X10 diesel engine displayed at industry event, showing heavy-duty architecture and emissions components

Equipment & OEM May 28, 2026

Cummins X10 Targets Heavy-Duty Market Share With 70 HP, 400 lb-ft Gain

The X10 replaces the L9 and X12 in North America, adds 25,000-mile oil-drain interval, and meets 2027 EPA NOx limits with 48-volt electrical heating.

By Hank Rivers

Heavy-duty diesel engine with SCR aftertreatment canister and DEF tank visible under truck frame

General May 8, 2026

EPA 2027 NOx Rule Expected Late June, 35 mg/hp-hr Limit Stands

Heavy-duty engine makers say the agency will keep the 35-milligram-per-horsepower-hour NOx standard in the final rule, down from today's 200 mg/hp-hr.

By Hank Rivers