Cummins says its four-cylinder QSB3.3 and QSB4.5 diesel engines (75- to 160-horsepower) will meet EPA Tier 4 Interim emissions restrictions in 2012 with fuel efficiency improvements up to 5 percent.

The Dot is the latest innovation in autonomous agriculture. Designed with efficiency in mind, and powered by the Cummins QSB4.5, Dot aims to reduce both fuel and labor costs for any type of job. Your ...

Cummins Inc. announced today that production has started on the 4-cylinder QSF2.8, QSF3.8 and QSB4.5 engines certified to meet U.S. Environmental Protection Agency (EPA) Tier 4 Final low-emissions ...

Equipment Fleet Maintenance Diesel Engines Brochure: QSF2.8, QSF3.8 And QSB4.5 Diesel Engines Get a PDF of the 6-page Cummins brochure on its four-cylinder diesel engines from 2.8L to 4.5L ...