W.W. Williams & Detroit Diesel

We're Your Detroit Diesel Partner

Detroit Diesel is an industry-leading manufacturer of medium duty, heavy duty, and extreme duty diesel engines. Founded in 1983, the brand enjoys a long history of innovation and performance results. At W.W. Williams, we are proud to be an authorized Detroit Diesel distributor and service provider—supporting today's drivers and businesses with top-notch service centers, factory trained service technicians, and unparalleled product knowledge support.

Full Service Support & Sales for Detroit Diesel


To keep your truck running at ideal performance, keep it serviced by professionals you trust. Our factory trained and authorized service technicians not only understand all aspects of your engine, but they also understand how important your engine is to your business and your bottom line. Our service centers deliver:

  • Detroit Diesel factory trained service technicians
  • Fully equipped fleet of field service trucks
  • Detroit Diesel branded filters, lubricant and lube coolant analysis
  • Complete line of premium heavy duty truck parts in stock and ready for exchange
  • Chassis dynamometers
  • Preventative maintenance and tune-ups


W.W. Williams does excellent work and are the go-to people for Detroit Diesel. 

STEPHEN MILLER Logistics Coordinator


Detroit Engines boast best-in-class fuel economy—and have a reputation for dependability. We represent product lines for nearly every application. Whether you need a diesel engine to power a long-haul truck, an extreme duty vehicle, or a coach bus—we’ll help you find the right engine to fit your needs. We represent the following Detroit Engines:

  • DD13 – up to 470hp
  • DD15 – up to 505hp
  • DD16 – up to 600hp
  • Series 900 – up to 230hp
  • Series 4000 – up to 450hp
  • Series 50 – up to 350hp
  • Series 60 – up to 515hp