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Authorized Allison Transmission Dealer

Lethbridge Diesel provides quality parts and expert service for your heavy-duty truck.

Lethbridge Diesel Ltd. – Heavy-Duty Truck & Trailer Repair & Service

Since 1969, Lethbridge Diesel has offered quality parts and services for heavy-duty trucks in Lethbridge and the surrounding communities. As an authorized dealer for Allison Transmission, we represent parts from a manufacturer striving for the best in diesel technology. Our experienced mechanics provide complete overhauls for engines and transmissions, as well as commercial vehicle inspections for trucks and trailers. We also have the only chassis dynamometer for horsepower testing in Southern Alberta.

Heavy-Duty Service

We’re serious about giving you the most value out of our full-service shop. Customers aren't just a number. They are treated with dignity and respect. “Heavy-duty” service has never been so friendly—we give service with a smile! Our team of licensed mechanics take exceptional pride in fulfilling customer requests. We offer services for heavy-duty trucks, including:

  • Complete engine overhauls
  • Transmission overhauls
  • Chassis dynamometer services
  • Commercial vehicle inspections for trucks and trailers
  • Oil changes and grease jobs
  • Brake jobs


Heavy-Duty Truck Parts

Customers come to us because our experienced team has the knowledge to locate the exact truck parts you need so you can get your truck back on the road. We are an authorized dealer of Allison Transmission parts, and also carry clutches, air coolers, engine heaters, brakes, and more.

24-Hour Emergency Callouts

Need a fast fix? Lethbridge Diesel provides 24-hour emergency service callouts for Lethbridge and the surrounding communities.


For a free estimate on quality heavy-duty truck parts or reliable service from an experienced, licensed mechanic, contact Lethbridge Diesel today!


Professional Affiliations

Lethbridge Chamber of Commerce

Lethbridge Chamber of Commerce
Allison Transmission

Service Area

Lethbridge and surrounding area

Southern Alberta

Get Back on the Road

From engine repair to commercial vehicle inspections, our licensed heavy-duty mechanics have your truck covered.

Parts When You Need Them

We supply industry-leading Allison Transmission parts as well as clutches, brakes, U-joints and more.

Service with a Smile

Our team of licensed mechanics take pride in getting customer vehicles back on the road as soon as possible.

Getting the Job Done

Awesome guys. Not a cookie cutter dealer/ parts replacers. Lethbridge Diesel are old school get er done kind of guys. The kind we need more of. Now if they would only work on cars too.

Larry F

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