Harland’s Diesel Service is a full-service diesel facility. Helping those who depend on diesel trucks and equipment to get the job done, we provide routine preventative maintenance and reliable repairs. Semi-Truck repair is our specialty. And, with Action Truck Parts, our partner company, we always have a full inventory of parts to serve you. Call Harland Diesel Service (580) 765-2866 to schedule maintenance, repair or have our team meet your diesel challenge where you are.


Our technicians are experts at providing service to the following:

  • DOT Inspections
  • State-of-the-art Diagnostics
  • A/C
  • Brakes
  • Engines and Transmissions
  • Diesel Services (from engine overhaul, to injection, to turbo diesel)
  • Electrical
  • Oil Change
  • Tune Ups
  • Wheel Bearings
  • U-Joints
  • Starters
  • Drive Train

I am a new customer who found your company on Google and was extremely pleased with the quality of service. I want to thank you for your prompt attention and compliment your friendly staff who answered my questions. I’m grateful to have found such a professional company and I will continue to recommend you in the future.


The Hallmark of our company is to keep you truck’n! That’s why we perform service calls within a 60-mile radius of our shop situated in Ponca City, OK. Our service professionals arrive on the scene as soon as possible and work efficiently to get your diesel truck or heavy equipment back to work. Expect a fast turnaround time whether you’re a Ponca City local or simply passing through. Unexpected mechanical failures will ruin your ride. We’ll get you running in no time!