Dodge & Ram diesel repair in Richland, WA
Cummins
Every Dodge and Ram heavy-duty diesel since 1989 has a Cummins inline six. We work on all of them, from the mechanical 12-valve to the current 6.7.
Dodge Ram and Ram 2500, 3500 pickups
Call (509) 375-9997| Engine | Model years |
|---|---|
| 5.9L 12-valve | 1989 – 1998 |
| 5.9L 24-valve | 1998½ – 2002 |
| 5.9L common rail | 2003 – 2007 |
| 6.7L | 2007½ – today |
What we do on your Cummins
- Diagnostics and drivability problems
- Injectors and injection pumps
- Turbo repair and replacement
- Glow plugs and glow plug harnesses
- Engine rebuilds and seals
- Exhaust work
- EFI tuning and Dynojet chassis dyno
- Scheduled maintenance and oil changes
Dodge & Ram owners on the shop

“Rueben was super helpful and got my truck running in no time. Very fair priced and easy to work with.”
What diesel owners say
4.9 stars from 36 Google reviews“These guys were incredibly professional, very personable and did outstanding work. I really appreciated there care and concern!! Thank you Chad and your DPU Team.”
“My Truck was starting to have issues as I was traveling through Richland WA. I came to Diesel Performance Unlimited as they were opening. I explained to Jesse that I was traveling for work and really needed to get to Nevada. He didn’t hesitate to offer help. And he gave me a ride to and from the campground I was parked at. He went above and beyond. I had gone to the dealership they couldn’t help me. I kept going down the list of repair shops and was told maybe in 2-3 weeks. Jesse troubleshot my problem and fixed it quickly and at a very reasonable price. Thank you for your help.”
“Jessie is extremely knowledgeable and a man of integrity. Ive used him a few times and have always walked away with a smile. Had a few unfortunate things happen to my truck but he took responsibility and fixed it all. 10/10 would recommend!”
“What a great experience very professional, knowledgeable and had the work done a day earlier than expected at the quoted price and they included a full vehicle inspection with a price list and quotes and after 24 years it was as you might expect but she runs better than the day I drove it off the lot 24 years ago. Thank you, Diesel Performance Unlimited”
“Had my truck towed to Diesel performance. They got to my truck quickly and fixed the issues the next day. Pricing was great and I’m happy to have found them. Highly recommend.”
Bring your Cummins in
1990 Saint St, Richland. Monday to Friday, 8 AM to 5 PM.
Serving the Tri-Cities: Richland, Kennewick, and Pasco.
