638 Series

**Detroit Diesel 638 Series Engines**
The Detroit Diesel 638 Series is a family of heavy-duty, 4-stroke cycle, high-pressure common rail fuel injection diesel engines. The 638 Series engines are designed for use in on-highway and vocational applications, and are available in a variety of displacements from 10.8L to 15.6L. The 638 Series engines are renowned for their durability, reliability, and fuel efficiency. They are also equipped with a number of advanced features, such as variable valve timing and a turbocharger, which help to improve performance and reduce emissions.