Demand a Superior Powertrain. Demand Detroit.

Powered, Connected and Driven by a Passion for Performance: Detroit®

Detroit® is the industry-leading original equipment manufacturer of state-of-the-art engines, axles and transmissions specifically designed for integrated, optimized performance and efficiency inside Freightliner and Western Star Trucks. The Detroit® product portfolio has expanded to include advanced safety systems and telematics, delivering a total trucking solution.


Demand the Best. Demand It All. Demand Detroit.

With Great Products and Passionate People, No One Does It Like Detroit®.

From components, safety systems and fleet management tools, to parts, service and your ideal business partner—only Detroit® can deliver it all. The unbeatable combination of superior products, passionate individuals and the benefits of being part of the Daimler global resources team make Detroit the premier industry leader in providing customers with an optimal business solution.

Detroit offers a full line of diesel engine platforms for both the heavy-duty and mid-range markets, along with axles, transmissions, safety systems and telematics for the commercial transportation and work industries. The entire Detroit engine lineup meets stringent EPA 2017 greenhouse gas regulation standards.

Detroit Genuine Parts are quality, OEM replacement parts for Detroit components. Detroit partners with industry-leading suppliers and technology providers to ensure that only the finest products are offered under the Detroit brand.



A proud tradition of building engines with strength, quality and dependability began for Detroit in 1938, when it was known as the General Motors (GM) Diesel Division. The heavy-duty, on-highway Series 71 engine was used extensively in military and road-building and was followed by the Series 53 model, another powerhouse with wide-ranging applications.


In 1965, GM Diesel became the Detroit Engine Division, partnering with the transmission and gas-turbine business of the Allison Division, forming Detroit Diesel Allison. Sales tripled. By the 1980s, Detroit Diesel had split from the Allison Division, when the Series 60 was developed to meet the demand for a cleaner, more fuel-efficient heavy-duty engine. The Series 60 quickly became the most popular heavy-duty engine in the North American class-8 segment.



A late-1980s joint venture between Penske Corporation and GM created Detroit Diesel Corporation. In 2000, Daimler-Chrysler acquired the business, making Detroit Diesel a subsidiary of Daimler Truck North America. In 2011, Detroit Diesel expanded its design and manufacturing scope beyond engines, simplifying its name to Detroit. Today, Detroit products and services are supported by a parts and distribution network of over 800 locations in North America.

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