The QSX is designed to deliver dependable, hardworking performance without compromise, every acre and every day. A unique dual overhead cam design optimizes combustion efficiency and pulling power of your 4WD tractor or scraper tractor, so you can easily handle the biggest rippers and tillage tools.

Available in a range of ratings from 350-635 hp (261-474 kW), the QSX not only meets Tier 2 emissions standards, its advanced design can reach Tier 3 requirements as well, with minimal changes. Maintenance has been consolidated so your QSX has less downtime, with extended service intervals. And the Cummins Advisor makes installing the right standard features and operating parameters easy every time.

Every QSX engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest in the industry.