Detroit® Warranties

Demand Peace of Mind

Detroit® engine and axles owners enjoy comprehensive warranty coverage, including a fast, hassle-free process and expedited parts and service for critical downtime situations.

Engine Service Warranties

DD13®, DD15®, DD16®

  • Engine: 2 years/unlimited miles, including 100% parts and labor
  • Injectors: 2 years/200,000 miles including parts and labor
  • Major components: 5 years/500,000 miles
  • No charge on parts

DD5™, DD8™

  • Engine: 3 years/250,000 miles, including 100% parts and labor
  • No charge on parts

Front Steer Axles Warranty

For the front steer axle, warranty coverage includes the I-beam, steering knuckles, spindles, kingpins, kingpin bearings and steering arms. Detroit® allows 100% warranty coverage of all knuckle parts, including the kingpin. Progressive damage is also covered. Front axles are covered for up to 5 years/750,000 miles for on-highway applications.


Rear Axles Warranty

Warranty coverage includes the axle housing, carrier assembly, inter-axle differential, axle shafts, gaskets and seals. Detroit® offers a standard 5-year/750,000 mile warranty on Class 8 on-highway applications when synthetic lube is installed.



Transmission Warranty 

For the DT12®, warranty coverage is 5 year/750,000 miles on 100% on-highway applications in the U.S. and Canada. The CPCA clutch coverage is 3 year/300,000 miles. See warranty parchment for exclusions.




There are other applications that cover other warranty coverages. Please consult with your local service location for exact warranty parchment details. The coverages listed above pertain to customers in U.S., Canada and Mexico except where noted.

Extended Service Coverage

bottom line. By letting you choose your level of coverage, Extended Coverage helps you 
control up-front costs and efficiencies while managing unexpected occurrences. 

Detroit’s extended engine service coverage covers tomorrow’s costs at today’s pricing. After reviewing your base warranty coverage, consider extended service coverage for protection on engine systems and components that fit your needs and application. 



Multiple time and distances are available for up to 6 years/600,000 miles for on-highway or  7 years/250,000 miles for vocational coverage. 


After your base warranty ends, you will be able to count on extended service coverage 
to control your out-of-pocket repair costs making your business expenses more predictable.



Detroit® Extended Coverage is also available for the DT12® transmission, DT12® clutch and Detroit® Axles.

Are you interested in longer warranty coverage?  Detroit Extended Next can be added to your active truck covers to keep your investment protected even longer.

Do you have a DD13, DD15 or DD16 without a warranty or an expired warranty? Detroit OE Advantage may be for you.

For more details on how extended coverage can benefit you, contact your nearest authorized Detroit service location.

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