Detroit DD16® Engine

Extreme duty and heavy hauling for your biggest jobs.

The Detroit DD16 truck engine is the biggest, toughest, most powerful engine Detroit has ever produced. With a wide, flat torque curve, and delivering up to 2050 lb/ft and 600 HP, it tackles your hardest jobs while performing with the fuel efficiency and reliability you’ve come to count on from Detroit. 

Brochures and Videos Maintenance Intervals and Warranties

1850-2050 lb-ft

Torque Range


Horsepower Range

15.6 L


Pulling huge loads up hills is what the DD16 diesel engine was born to do. Its 15.6 -liter displacement produces up to 600 horsepower, while providing amazing torque curve to get the heaviest loads moving.

More Specs

Perform when it counts

Stay productive and profitable with:

  • 15.6L displacement — the largest on-highway engine built by Detroit
  • Turbo compounding to recover heat from the exhaust, transforming lost potential into bonus power
  • Wide, flat torque curve pulls strong all the way down below 1000 RPM
  • Next Generation Amplified Common Rail System (ACRS) to optimize combustion control
  • Integrated Jacobs® brake that offers three levels of quieter engine braking for enhanced downhill control and shorter stopping distances, all with reduced wear on the service brakes, tires and other components
  • Meets 2016 OBD (OBD16) and 2017 Greenhouse Gas (GHG17) regulations

Model Options

Designed for construction, distribution, dump, fire and emergency, government, motor home, oil & gas, refuse, and regional. 

Western Star
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DetroitConnect Virtual Technician

If maintenance issues come up on the road, you can count on Detroit Connect Virtual Technician. With Virtual Technician, you are notified within minutes when their vehicles experience fault events, the severity of the fault and when, where and how to best fix the issue causing the fault so you can make informed service decisions.

Keep running

With the longest service intervals in its class and an easily serviceable design, the Detroit DD16 lowers your cost of ownership by decreasing your time in the shop. With oil and fuel filters positioned above the frame rails, you'll be back in the driver's seat fast.

ghg17 vs ghg14 engine fuel efficiency & def usage calculator

Reducing CO2 emissions and meeting 2017 Greenhouse Gas (GHG17) requirements means better fuel economy. Compare how our GHG17 Compliant Detroit™ engines stack up against GHG14 engines. Our GHG17 engines provide better fuel economy while using a slightly higher amount of Diesel Exhaust Fluid (DEF). See for yourself how these engines will affect your operating costs.





Connect Today

Learn more by visiting your nearest Freightliner or Western Star dealership.

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Brochures and Spec Sheets

Detroit Engines Driver Card Detroit DD16 GHG17 Brochure Detroit Engines Spanish Driver Card Detroit Engines French Driver Card New Cascadia Detroit Engines Driver Card - French New Cascadia Detroit Engines Driver Card - Spanish New Cascadia Detroit Engines Driver Card


Detroit Optimized Idle Training Video Detroit DDEC Training Video Detroit Engines Regeneration Training Video Detroit DDEC Training Video Parked Regen GHG17 - Overview Training Video Parked Regen GHG17 - Steps to Complete Regen Training Video Diesel Particulate Filter (DPF) Cleaning Procedure Video BlueTec Emissions Technology Video


Maintenance Intervals


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Detroit Connect Portal

The Detroit™ Connect portal is easy-to-use, one-stop-shop for all vehicle performance data gathered, transmitted and analyzed by Detroit Connect.  The portal gives you access to insights delivered by  Detroit Connect Virtual Technician℠. The Detroit Connect portal will also give you access to new features, such as Remote Updates, and Analytics, available late 2017.

Detroit connect portal login


DDCSN serves as both a public customer website and secure service portal to access DETROIT branded product service and parts information, tools, training, and more. Here you can access a wide range of product literature such as operator mauals, warranty booklets, and even service bulletins. You can also find parts catalogs, sales and marketing programs, webinars, and much more.


DTNA Connect Portal

DTNA Connect is the starting point for working with all brands and franchises that fall under the Daimler Trucks North America umbrella: Detroit, Thomas Built Buses, SelecTrucks, Sterling, Freightliner, and Western Star. Here, you can access the full spectrum of online applications, resources and tools you need. Whether you use DTNA online resources to complete repairs, purchase parts, submit warranty claims, spec new vehicles or track the status of your truck orders, DTNAConnect streamlines the tasks and activities that are part of your daily work routine.

DTNA Connect Portal Login