Flowery Branch, GA · Serving All Of Metro Atlanta

Diesel Repair Experts

Factory trained master techs. We are the dealership alternative for your Power Stroke, Cummins and Duramax.

ASE Certified Master Technicians

100+ Years Of Diesel Experience

Family Owned & Operated

Unbeatable Warranty

Welcome To United Diesel

The Dealership Alternative For Your Diesel

United Diesel Repair is a family owned and operated diesel shop in Flowery Branch, serving all of Metro Atlanta. Our ASE Certified Master Technicians bring over 100 years of experience in diesel service and repair, plus the cutting-edge diagnostic tools your truck needs.

From a check engine light to a major rebuild or a performance upgrade, we take care of Ford Power Stroke, Dodge and Ram Cummins, and Chevy and GMC Duramax diesels, backed by an unbeatable warranty.

What We Do

Diesel Repair & Performance

Repairs, maintenance and performance work for the diesels that work as hard as you do.

Power Stroke Repair

Our diesel service mechanics not only have the passion but the extensive experience needed for Powerstroke repair. These trucks require lots of technical knowledge. With our cutting-edge diagnostic tools, we will make sure that your Powerstroke is running as well as the day it was built.

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Ford Diesel Performance

We believe that your diesel vehicle deserves the best! Whether it’s a tune-up or major rebuild, United Diesel Repair Flowery Branch has Ford Diesel Performance packages that can get your truck or car in tip-top shape while delivering quality workmanship.

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Cummins Repair

Having problems with your Dodge diesel engine, transmission, or drive-train? Whatever the problem, our certified Cummins Repair Senior Master Technicians will accurately diagnose the problem and get your truck running like new again. So, don’t worry, you will be back on the road in no time.

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Dodge Diesel Performance

Dreaming of modifying your Dodge diesel? Our technicians have decades of experience to handle any performance modification whether it’s a 5.9L or 6.7L Cummins engine. We have the tools and the skills to make it happen.

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Duramax Repair

Our Duramax repair team is highly trained and experienced to take care of your old or new Duramax system. Whether it’s a high-pressure pump issue or a major overhaul, we have you covered!

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Duramax Performance

We are your one-stop shop for all your Duramax performance needs! Our highly trained technicians can take care of all of your service and repairs from engine components to exhaust systems to get your Duramax at max performance. There is no job too big or small!

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Vehicles We Service

Diesel Is Our Speciality

Light and heavy duty diesel trucks, work trucks and fleets.

Ford Power Stroke

Repair & Performance

Dodge / Ram Cummins

Repair & Performance

Chevy / GMC Duramax

Repair & Performance

Work Trucks & Fleets

Fleet Service

Why United Diesel

Why Choose United Diesel Repair Flowery Branch?

Family Owned & Operated

Over 100 Years Of Experience In Diesel Service And Repair

ASE Certified Master Technicians

We Offer An Unbeatable Warranty

Free WiFi And Concessions

Complete Diesel Care

Everything Your Truck Needs

Diagnostics

Underhood

Transmission Repair

Brakes

Electrical

A/C

Maintenance

24 Hour Towing

Inside Our Shop

Real Trucks. Real Work.

Find Us

Visit Us In Flowery Branch