Detroit Diesel has a long history in Michigan. For more than 80 years, the company has developed engines for trucks, industrial equipment, marine vessels and other heavy-duty uses.

Today, Detroit Diesel Michigan remains an important part of the brand's manufacturing and engineering operations. New investment in its Redford facility shows that Detroit continues to improve its engine technology and support future heavy-duty power systems.

For operators in Australia and other markets, this long history matters. Many older Detroit Diesel engines remain in service, making reliable parts supply and proper maintenance essential.

Quick Answer: Detroit Diesel's Michigan operations remain a key centre for engine manufacturing, development and long-term support.

Detroit Diesel's Michigan Origins

Detroit's history in Michigan dates back to 1938, when General Motors formed the GM Diesel Division.

One of its earliest engines was the Series 71. This engine became widely used in trucks, construction equipment, industrial machinery, marine vessels and military applications.

Over the years, Detroit introduced several other well-known engine families. These included the Series 53, Series 92 and Series 149.

Another major development came with the Detroit Diesel Series 60 in the late 1980s. It introduced electronic engine controls and became one of Detroit's most recognised heavy-duty diesel engines.

These engines helped build Detroit's reputation for reliable power and long service life.

New Investment in Detroit's Michigan Facility

Detroit's connection with Michigan continues today.

Daimler Truck North America announced plans to invest up to US$285 million in its Detroit Manufacturing Plant in Redford Township, Michigan.

The investment is intended to improve manufacturing facilities and support research and development. It also includes continued development of internal combustion engine technology.

The project is expected to support hundreds of new jobs while strengthening an operation that already employs thousands of people.

This investment shows that Michigan remains an important location for Detroit's future engine development.

Moving Into a New Generation of Detroit Engines

Detroit continues to develop newer heavy-duty engines alongside its long-established engine range.

In 2026, the company introduced its latest generation of DD13, DD15 and DD16 engines. These engines are designed to meet newer emissions requirements while improving fuel efficiency and performance.

Detroit's Redford facility plays an important role in the production and development of these engines.

The technology has changed greatly since the early Series 71 engines. However, the main goal remains similar: to produce dependable engines for demanding applications.

Why Detroit Diesel Engines Built a Strong Reputation

Detroit Diesel engines became popular in many industries because they were designed for heavy-duty work.

Older engines were often valued for their strong construction and practical design. Many could be repaired or rebuilt instead of being replaced completely.

This was useful for businesses operating expensive equipment where downtime could be costly.

As engine technology developed, Detroit also introduced more advanced fuel systems and electronic controls. The Series 60 was an important example of this change.

Today, modern Detroit engines use more advanced electronics, fuel management and emissions systems. However, reliability and operating efficiency remain key priorities.

From Series 71 to Series 60 and 16V149

Several Detroit Diesel engine families are still well known among operators and maintenance teams.

The Series 71 is one of Detroit's most established engine ranges. It was used across many industrial, marine and vehicle applications.

The Series 92 was another popular two-stroke engine family. It was designed for applications that required strong and dependable power.

For larger equipment, the Series 149 provided much higher output. Models such as the 16V149 were commonly used in heavy industrial, marine and power-generation applications.

The Series 60 later represented a major move towards electronically controlled four-stroke diesel engines.

Although many of these engines are no longer new, they continue to operate in equipment around the world.

Why Operators Still Maintain Legacy Detroit Diesel Engines

Replacing an older engine is not always necessary or cost-effective.

A Detroit Diesel engine may already be connected to an existing machine, vessel or power system. Replacing the engine could require changes to other equipment as well.

For this reason, maintaining or rebuilding the existing engine can sometimes be the more practical option.

Operators should regularly check areas such as:

• Engine oil pressure

• Cooling system condition

• Fuel system and injectors

• Turbocharger condition

• Cylinder and piston wear

• Unusual noise, smoke or vibration

• Overall engine performance

The correct maintenance approach will depend on the engine model, operating hours and application.

Parts Support for Older Detroit Diesel Engines

Access to suitable parts is an important part of keeping an older engine running.

Operators using Detroit Diesel Series 60, Series 71, Series 92, Series 149 or 16V149 engines should identify their engine carefully before ordering replacement components.

Parts can vary between engine models and configurations.

Where possible, provide the following details when sourcing parts:

• Engine model

• Engine serial number

• Part number

• Equipment application

• Photos of the existing component if required

Providing accurate information can help reduce the risk of ordering the wrong part and avoid unnecessary downtime.

What Does Detroit's Michigan Investment Mean for Legacy Engine Users?

New investment in Michigan mainly supports Detroit's current and future engine technology. However, it also shows the strength of the brand's long-term engineering presence.

Detroit has moved from early mechanical two-stroke engines to electronically controlled heavy-duty engines and today's advanced DD platforms.

For operators of older engines, this history is important because many legacy Detroit Diesel models were built for long-term industrial use.

Their continued operation depends on good maintenance, correct replacement parts and experienced technical support.

Frequently Asked Questions

Is Detroit Diesel still in Michigan?

Yes. Detroit continues to operate its manufacturing campus in Redford Township, Michigan. The site supports engine manufacturing as well as research and development.

What Detroit Diesel engines were made in Michigan?

Detroit's Michigan history includes well-known engine families such as the Series 71, Series 92, Series 149 and Series 60, along with newer Detroit DD engines.

Are old Detroit Diesel engines still used?

Yes. Many older Detroit Diesel engines are still used in industrial, marine, power-generation and heavy-equipment applications.

Can legacy Detroit Diesel engines still be repaired?

In many cases, yes. Whether an engine should be repaired, rebuilt or replaced depends on its condition, application and the availability of suitable parts.

Why is the Series 60 well known?

The Detroit Diesel Series 60 became popular for its heavy-duty performance and use of electronic engine controls. It remains a familiar engine platform in many markets.

A Michigan Diesel Legacy That Continues Today

The history of Detroit Diesel Michigan stretches from the early Series 71 to today's advanced DD engine platforms.

New investment in the Redford facility shows that Michigan remains important to Detroit's manufacturing and engineering future.

At the same time, older engines such as the Series 60, Series 71, Series 92, Series 149 and 16V149 continue to serve businesses around the world.

For operators maintaining these engines, correct servicing and reliable access to suitable replacement parts remain essential for long-term performance.