Diesel Truck, Vans, Heavy-Duty & Motorhome Maintenance & Repair 


Regular maintenance is the key to getting the most out of your vehicle. But you shouldn't have to sacrifice trust and peace of mind when finding a repair center for your Diesel. We are a certified NAPA Truck Center.  NAPA Truck Centers are built around a quality standard where independent business like Rocky Mountain Diesel are invited based on integrity, qualifications and expertise. That's how NAPA ensures you get the best in class service that you deserve. From routine maintenance to major repairs, we've got you covered. We have the best ASE-certified technicians in Missoula. We use high-quality NAPA parts and provide exceptional work; work that you can feel confident about, knowing it's backed by our 12 month, 12,000 mile Nationwide Peace of Mind Warranty. With the largest network of independent mechanics in the U.S.

Shop Labor Rates: Trucks: $89/hr | Vans, Heavy Duty & Motorhomes: $115/hr

Remanufacture (rebuild) Diesel Engines


RMD remanufactures a complete line of domestic and import diesel engines including Caterpillar, Cummins, Detroit, Ford, GM, International, Isuzu, and Perkins. We offer both immediate exchange and custom manufacturing programs designed to minimize your downtime. Every year, RMD remanufactures engines of all sizes and makes, from on-highway to off-road and industrial.

RMD provides you with more than just a remanufactured diesel engine... we provide confidence. Confidence in your equipment's performance and our remanufacturing procedures. Confidence in knowing that you have installed the best remanufactured diesel engine available.

Fleet & DOT Inspections, CSA 2010 Compliance 


At Rocky Mountain Diesel, we know how important it is to keep your fleet on the road and running efficiently. We can work with you and your fleet to design a preventive maintenance program that meets your needs and help prevent costly breakdowns. We will utilize your custom inspections, or help develop a custom inspection plan. 

Very Important Rebuilds - Another Happy Customer