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That mechanical problem isn’t going away on its own. Let our professionals take a look.

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When it comes to superior mechanical performance and dependable customer service, trust the team at Mr. Diesel Inc. in Calgary for all your diesel engine repairs. Our crew of mechanical perfectionists will ensure your rig is ready for the demands of the job ahead. From Cummins to Volvo, we understand the workings of your vehicle’s components, inside and out! Avoid potential power loss, injector problems, or wiring issues. Give us a call or stop by the shop for a thorough inspection.


Truck types we service

  • 3-Ton
  • 5-Ton
  • Semi-trailer
  • Trailers

Mechanical Services

  • Maintenance and diagnostics
  • Motor vehicle inspections - semis 
  • Clutch and drivetrains
  • Electronic repairs
  • Differential rebuilds
  • Engine rebuilds/replacements
  • Brakes
  • Air conditioning
  • Suspension work
  • Tires
  • Exhaust and emissions controls
  • Transmission rebuilds
  • Welding/fabrication
  • Fleet maintenance


  • Heavy truck and trailer repair – consistent, high-quality service

  • Cummins, Cat, Detroit Diesel, MBE, International, volvo, Mack

  • All major manufacturers of transmissions and driveline components

  • Routine maintenance

Fleet Services

  • We do all the required maintenance as well as the annual CVIP (Commercial Vehicle Inspection Program) inspection 
  • For light duty, medium duty and heavy trucks, trailers 
  • Government regulated and required annually for trucks and trailers 
  • We are an authorized Commercial Vehicle Inspection Station

Computer Diagnostics

We provide complete computer diagnostics for late model trucks, including engine transmissions and emission systems including a DPF (Diesel Particulate Filter) and SCR (Select Catalyst Reduction).

  • Parameter changes, speed parameters
  • 3 laptops loaded with OEM software for most North American engine brands

Air Conditioning

  • Complete AC service
  • Fully licensed AC techs 
  • Extensive troubleshooting experience 
  • Current up-to-date maintained Robinair machine

Complete Engine Rebuilding

  • In-house counterbore cutting 
  • In-frame and out-of-frame rebuilds

Counterbore Cutting

  • We are able to repair engine block counterbores in-frame without having to remove the engine and send it to a machine stop

Check out our work and give us a call today.

Mr Diesel Inc

7736 56 Street SE

Calgary, AB T2C 4S9

P | 403-253-1918


Monday to Friday: 8:00am – 5:00pm
Saturday: By appointment only

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