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. 


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
Find a Dealer

Detroit Connect Virtual Technician® remote diagnostic system

If maintenance issues come up while on the road, you can count on Detroit Connect Virtual Technician. With Virtual Technician, you are notified within minutes when your vehicles experience a fault event, 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.

Connect Today

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

Find the nearest dealer

Brochures and Spec Sheets

Detroit DD16 GHG17 Brochure Detroit DD16 GHG17 Product Overview Guide DD16 | French Product Overview Guide | Detroit Detroit Engines Spanish Driver Card Detroit Engines French Driver Card Cascadia Detroit Engines Driver Card - French Cascadia Detroit Engines Driver Card - Spanish Cascadia Detroit Engines Driver Card


Detroit Optimized Idle Training Video Detroit DDEC Training Video Detroit DD16 GHG17 Product Video Detroit Engine Assembly Video Detroit Engines Regeneration Training Video Detroit DDEC Training Video Detroit Engines Family Product Video Ralenti optimizado Detroit - Video de entrenamiento Parked Regen GHG17 - Overview Training Video Parked Regen GHG17 - Steps to Complete Regen Training Video Regeneracion Estacionaria GHG17  - Pasos para completar la Regeneracion - Video Diesel Particulate Filter (DPF) Cleaning Procedure Video BlueTec Emissions Technology Video


Detroit Engines Trinity Image Detroit DD16 Hot Profile Image Detroit DD16 Hot 3/4 Image Detroit DD16 Hot 3/4 Low-View Image Detroit DD16 Cold Profile Image Detroit DD16 Cold 3/4 Image


Maintenance Intervals


Find a Dealer

Locate a Dealer

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


All DDCSN content has been migrated to our DTNAConnect web portal. All information previously on the DDCSN is now on DTNAConnect. We have created a quick reference guide to help you locate the migrated content on DTNAConnect. Existing DDCSN login credentials will also work with DTNAConnect. Please work with your security administrators for login or content issues. If you do encounter any technical issues, please contact the Software Support Center at 855-639-8680 or


DTNA Connect Portal

DTNA Connect is the starting point for working with all brands and franchises that fall under the Daimler Truck 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