The most innovative engine to hit the road. Ever. For 70 years, Detroit Diesel has been perfecting and innovating diesel engines. But now, after extensive research and testing, Detroit Diesel has built an engine made for the next generation of commercial vehicles.

The DD15™ takes innovation to a whole new level. This impressive new engine delivers additional horsepower, increased fuel economy, on-demand power, increased maintenance intervals and a smoother, cleaner ride.

Hardcore Power and Fuel Economy

• Unique turbo compound system recycles exhaust gases and boosts torque without sacrificing fuel
• Adds up to 50 'bonus' horsepower* while providing up to a 5% fuel savings** over other leading engines
• Innovative three-filter fuel system increases fuel efficiency and decreases emissions

Smoother, Quieter Engine

• Amplified Common Rail Fuel System (ACRS™) (PDF: 641Kb) lowers emissions, noise, vibrations and fuel consumption
• Rear gear train and ribbed cast iron block minimize vibrations and sounds
• Integrated Jacobs Brake® with three levels of braking reduces noise and increases stopping power
• Stronger engine block has integrated oil and coolant passages for less idle noise

Low Maintenance

• Engine sub-systems are in modules above the frame rail, making maintenance quick and easy
• The B50 life is 1.2 million miles
• Built with 2010 EPA regulations in mind

*Effectiveness of turbo compound is based on load on the engine. The turbo compound returns horsepower back to the engine's flywheel.
**Compared to a Detroit Diesel Series 60 EPA 2007 engine with comparable engine ratings and load weights.

For more information on the DD15 engine, go to Detroit Diesel or contact your Western Star dealer.