Lesser-Regulated Diesel Engines
Run with confidence
You can count on John Deere PowerTech™ industrial engines to start in the morning, operate efficiently all day, and work reliably for many years. But pure product performance isn’t the strongest thing about working with John Deere. It’s the confidence of having the John Deere integration and support network at your side every step of the way.
![engines in action engines in action](https://www.deere.co.uk/assets/images/region-2/industries/engines-and-drivetrain/diesel-engines-stage-v-tier-4/lesser-regulated-diesel-engines-01.jpg)
Off-highway experience
John Deere specializes in rugged off-highway applications. That’s why our engines are built with heavy-duty components, top-liner cooling, steel pistons to maximize reliability, and wet-type cylinder liners for long-haul durability.
The power of choice
With John Deere, you get a wide range of configurations and accessories so you can specify the right engine that best fits your application. Our preconfigured options can help save hours of engineering time and help you get machines to market faster.
Integration assistance
You get expert integration assistance provided by John Deere engineers and distributors. OEMs can put our application engineering experience and know-how to work to help save development time and money.
Customer support
With more than 4,000 John Deere service locations worldwide, you never have far to go to find expert assistance and advice.
Fast parts delivery
Our distributors and dealers stock maintenance parts, as well as many other common replacement parts, to meet your service needs quickly. Our worldwide parts distribution system offers overnight delivery in most regions.
Engines for Tier 3/Stage III A equivalent and lesser-regulated applications
![engines in action engines in action](https://www.deere.co.uk/assets/images/region-2/industries/engines-and-drivetrain/diesel-engines-stage-v-tier-4/lesser-regulated-diesel-engines-02.jpg)
PowerTech M
The simplest of the PowerTech family, these engines have 2-valve heads, fixed geometry turbochargers, and mechanical fuel systems. PowerTech M 4.5L engines are perfect for less demanding applications. Their mechanical controls are simple to operate and maintain.
PowerTech E
These engines also have 2-valve heads and fixed geometry turbochargers, but introduce full authority electronic controls and more sophisticated fuel delivery. These 4.5L and 6.8L engines use a high-pressure common-rail (HPCR) fuel system.
PowerTech Plus
Utilizing the most advanced engine technology, PowerTech Plus engines have a 4-valve cylinder head, full authority electronic controls, variable geometry turbocharger (VGT), and cooled exhaust gas recirculation (EGR). They are available in larger displacements (4.5L, 6.8L, 9.0L, and 13.5L) and provide ultimate performance and fuel economy.
![Engines for tier 3 table](https://www.deere.co.uk/assets/images/region-2/industries/engines-and-drivetrain/diesel-engines-stage-v-tier-4/engines-for-tier-3-table.png)
Industrial engine power ratings
![Non emissions certified industrial engine power ratings table](https://www.deere.co.uk/assets/images/region-2/industries/engines-and-drivetrain/diesel-engines-stage-v-tier-4/non-emissions-certified-industrial-engine-power-ratings-table.png)