Caterpillar in Denver, CO and Kalispell, MT

Iron Buffalo provides professional Caterpillar repair. We specialize in diagnostics, emissions service, and heavy-duty diesel repairs to keep your Caterpillar equipment performing reliably.

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Colorado

Montana

Caterpillar Repair & Maintenance in Denver, CO, and Kalispell, MT

At Iron Buffalo, we provide full-service Caterpillar repair in Denver, CO and Kalispell, MT, supporting construction, industrial, and vocational fleets across all Cat platforms.

Our technicians are experienced with Cat trucks and off-road equipment like excavators, loaders, bulldozers, graders, and compactors. We diagnose and repair engine, transmission, hydraulic, electrical, and emissions systems using Cat-specific procedures and tools.

Full-Service Caterpillar Equipment Repairs

We support a wide range of Caterpillar models and systems with complete repair services. These include:

C7, C9, C13, and C15 engine diagnostics and repair
Hydraulic system testing and cylinder resealing
Final drive and undercarriage repairs
Track and suspension service
ECM fault code analysis and electrical diagnostics
Transmission and torque converter service
Turbocharger and oil cooler diagnostics
Emissions and aftertreatment system repairs
Preventive maintenance, inspections, and DOT compliance for Cat-powered trucks

From jobsite equipment to diesel-powered haul trucks, we have the experience and equipment to get the job done right.

Benefits of Caterpillar Equipment

Caterpillar is a global leader in heavy equipment, known for building machines that outperform and outlast in the toughest working conditions. From high-efficiency engines to advanced hydraulic and drive systems, Cat equipment delivers performance, durability, and operator confidence.

Each machine is designed for long-term use, with easy access to components, intelligent onboard diagnostics, and superior build quality.

Need Caterpillar Equipment Repair?

Need professional Caterpillar equipment service? Call Iron Buffalo at 303-623-7049 (Denver) or 406-890-7001 (Kalispell). We deliver fast, field-tested repairs to keep your Cat equipment operating without interruption.

FAQs

What Areas Do You Serve?

We offer 24/7 mobile repairs and roadside assistance in the following areas:

Colorado: Boulder, CO; Aurora, CO; Centennial, CO; Fort Collins, CO; Greeley, CO; Georgetown, CO; Brighton, CO; Castle Rock, CO; Colorado Springs, CO; and Longmont, CO.

Montana: Whitefish, MT; Bigfork, MT; Somers, MT; Polebridge, MT; Thompson Falls, MT; Polson, MT; Rollins, MT; Libby, MT; and Eureka, MT.

What Types of Caterpillar Equipment Do You Repair?

We repair excavators, bulldozers, loaders, backhoes, graders, compactors, generators, and Cat-powered commercial trucks—including both current and legacy models.

Do You Perform On-Site Repairs?

Yes. We offer 24/7 mobile repair services for Caterpillar equipment, including hydraulic system work, engine diagnostics, and electrical troubleshooting at your job site.

How Can I Get in Touch?

If you're ready to schedule diesel repairs, call Iron Buffalo today at 303-623-7049 (Denver) or 406-890-7001 (Kalispell).

Manufacturers

Customer testimonials

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"I highly recommend this shop. I had luke a technician there do some work on my truck after a ford dealership took 6 days and failed to acknowledge my warranty on 3 leaking oil spots on my truck.Once the dealership screwed me over I took my truck here. Luke was very impressive, fast and communicative. He provided me photos. He kept me updated on everything he did. I still have a warranty through ford but apparently it’s useless. I don’t think I’ll ever go back to them considering how they treated me. Luke is a solid technician who is very skilled. I can’t recommend him enough. Thank you."

Tristen

"Our truck broke down just as we were getting into Denver. It was a major repair and they accomplished it quickly and we were back in our truck. Everyone there was very professional and nice to work with. The unhappy news of a major repair was actually a good experience. Definitely recommend Iron Buffalo."

Kelly

"I’m glad I went to this shop. I was so worried it would be another back door mechanic wanting to swindle me. It was anything but. Shannon was super kind and went way out of his way getting me in right away. And Steve was a professional from start to finish in assisting with the work being done. I’m really appreciative and would 100% use this shop again."

Kristin

"Steven Riddle is the best service writer if ever dealt with. He is very knowledgeable, I called with starting issues. With in 1hour try had my truck towed in. That day they had it diagnosed then next day they found the parts. Great job, I will be using in the future. Thanks a lot."

Mike

"Kanisha was great, I had been trying to get my small hydraulic cylinder repaired for quite some time and she was the first person that said "YES" she was honest about needing to look first. She was willing to listen and explained the process. When I came in she was polite and professional. She communicated like she said she would and got it taken car of! I'll recommend Kanisha and Iron Buffalo!"

Lance

"I'm very happy with the service I received from Iron Buffalo Holdings I highly recommend this shop. I got an Inspection & a DYNO done on my Semi Truck. Canesha was prompt and courteous."

Miko

"Had a break down with the ol’ Pete they picked up and were available l. They aren’t the cheapest but heck you get what you pay for. If you want your rig or RV fixed so you can head one down the road these guys are nice and they can almost always get done in a day if you need it."

Bryan

Light, Medium & Heavy-Duty Truck Repair Services in Denver, CO & Kalispell, MT

Trusted Diesel Repair & Fleet Services - Keeping You on the Road & Job Site

Commerce City, CO

5590 E 55th St, Commerce, City, CO

303-623-7049

Kalispel, MT

104 Rocky Cliff Lane, Unit 1, Kalispell, MT

406-890-7001