1460 Danielsville Rd, Suite B, Athens, GA Mon–Fri 9am–5pm Authorized FASS & BD Diesel Dealer

Diesel specialists

Diesel repair & performance,
done by people who know diesels.

Duramax, Cummins, and Power Stroke — diagnosed, repaired, protected, and improved. As an authorized FASS and BD Diesel dealer, we keep your truck working hard for the long haul.

The platforms we know

Built for the big three

We know where each platform shines and where it tends to give trouble — which means faster diagnosis and a repair aimed at the real weak point.

GM · Chevy & GMC

Duramax

Our specialty. Deep experience with the Duramax and the GM trucks it lives in — diagnostics, fuel, emissions, and engine work.

Ram · Dodge

Cummins

The legendary inline-six. Fuel systems, lift pumps, turbos, and the maintenance that keeps a Cummins running for the long haul.

Ford

Power Stroke

Power Stroke diagnostics and repair — fuel, emissions, turbo, and engine work to keep your Super Duty earning.

Appalachian Auto & Diesel — authorized FASS Diesel Fuel Systems dealer in Athens, GA
Authorized FASS Dealer

FASS Fuel Systems

Your injectors and high-pressure pump are the most expensive parts on your diesel — and clean fuel is what keeps them alive. A FASS system pulls water, air, and contaminants out before they ever reach them.

  • Genuine FASS hardware, sized and installed correctly
  • FASS EGR Solutions filtration — legal, soot-reducing protection
  • Better injector life and consistent performance under load
Appalachian Auto & Diesel — authorized BD Diesel Performance dealer for towing and reliability upgrades
Authorized BD Diesel Dealer

BD Diesel Performance

One of the most trusted names in diesel, engineered for trucks that tow heavy and work hard. We sell and professionally install the full lineup for Duramax, Cummins, and Power Stroke.

  • Exhaust brakes for control and brake-saving on grades
  • Transmission & torque-converter upgrades that survive the heat
  • Turbos, manifolds, and intercooler piping — installed right

Diesel questions

Good to know

Which diesel platforms do you work on?

We focus on Duramax, Cummins, and Power Stroke pickups, plus commercial and fleet diesels. GM and the Duramax are our specialty. Not sure if we cover your truck? Call or text and ask.

Do you do diesel performance work, or just repair?

Both. As an authorized FASS and BD Diesel dealer we install fuel systems, transmission and towing upgrades, exhaust brakes, and reliability hardware — alongside everyday diagnostics and repair.

Do you do EGR or DPF deletes?

No. Removing emissions equipment from an on-road vehicle is illegal under the Clean Air Act. We service, clean, and repair EGR and DPF systems the legal way, and we offer FASS EGR Solutions filtration that reduces soot while keeping your truck street-legal.

My diesel is in limp mode / derate — can you help?

Yes. A derate means the truck is protecting itself, usually from an emissions, boost, or fuel-pressure fault. Get it scanned before it becomes a bigger repair. Call us and we'll talk it through.

Duramax · Cummins · Power Stroke

Let's keep your diesel running strong.

Whether it's a breakdown, a maintenance plan, or a towing setup, call or text the shop and talk to people who actually know diesels.

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