DD15™ Specifications

Technical Data

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

Specifications

Configuration Displacement Bore Stroke Weight (Dry) Electronics Compression Ratio
Inline 6 cylinder 14.8 Liters 5.47 in
(139 mm)		 6.42 in
(163 mm)		 2,880 lbs
(1,306 kg)		 DDEC® VI 18.4 : 1

Combining Power and Fuel Economy

  • Unique Turbo Compound System converts wasted energy and boosts torque without sacrificing fuel.
  • Adds up to 50 bonus horsepower1 while providing up to a 5% fuel savings2 over other leading engines.

1 Effectiveness of turbo compound is based on load on the engine. The turbo compound returns horsepower back to the engine’s flywheel.

2 Compared to a Detroit Diesel Series 60® EPA 2007 engine with comparable engine ratings and load weights.

Smoother, Quieter Engine

  • The DD15 fuel system lowers emissions, noise, vibrations and fuel consumption.
  • Rear gear train and ribbed cast iron block minimize vibrations and sounds.
  • Engine brake with three levels of braking reduces noise and increases stopping power.

DD15 Engine Power Ratings

Horsepower
HP @ 1800 RPM		 Torque
lb-ft @ 1100 RPM
455 1550
475 1550
455 1650
475 1650
505 1650
515 1750
485 1850
500 1850
530 1850
560 1850

DD15 Multi-Torque Power Ratings

Horsepower
HP @ 1800 RPM		 Torque
lb-ft @ 1100 RPM
455 1550/1750
475 1650/1850

DD15 Engine Cruise Power Ratings

Horsepower
HP @ 1800 RPM		 Torque
lb-ft @ 1100 RPM
455/475 1550
455/475 1650
455/505 1650
475/505 1650
485/530 1850
500/560 1850

Service Intervals and Maintenance

Modular engine sub-systems are located above the frame rail, making maintenance quick and easy.

Maintenance Item Severe Duty Short-Haul Long-Haul
Engine Oil & Filter* 25,000 35,000 50,000
Fuel Filter Change 25,000 35,000 50,000
Initial Valve Lash Adjustment 60,000 OR nearest scheduled maintenance interval 60,000 OR nearest scheduled maintenance interval 60,000 OR nearest scheduled maintenance interval

Please Note: Service Intervals change with driving conditions and loads. For intervals that are more specific to your driving conditions, contact your Detroit Diesel authorized service outlet.

Severe Duty is up to 30,000 annual miles and a vehicle that averages less than 5 mpg. Short Haul is between 30,000 and 60,000 annual miles and a vehicle that averages between 5 and 6 mpg. Long Haul is over 60,000 annual miles and a vehicle that averages greater than 6 mpg.

Spec Sheets and Brochure