Diesel Specialists
FASS Fuel System Installation
As an authorized FASS Fuel Systems dealer, we professionally install the lift pumps and filtration that protect your diesel's most expensive parts.
Signs you may need fass fuel systems
Your diesel's injectors and high-pressure pump are precision parts — and the cleanliness of your fuel decides how long they live. A FASS Fuel System pulls water, air, and contaminants out of the fuel before they reach those parts, which protects injector life and keeps the engine running the way it should under load.
Authorized dealer, professional install
Appalachian Auto & Diesel is an authorized FASS dealer in Athens, GA. That means genuine FASS hardware, sized and installed correctly for your truck — not a parking-lot bolt-on. A fuel system only delivers its protection if it's plumbed, wired, and mounted right, and that's what we do.
FASS EGR Solutions
We also offer the FASS EGR Solutions filtration system, which helps reduce the soot that reaches your engine's intake and supports long-term reliability. If you tow heavy, run a fleet, or just want the best protection for a truck you depend on, a FASS setup is one of the smartest investments you can make.
FASS Fuel Systems — common questions
What does a FASS fuel system actually do?
It filters and conditions your diesel fuel — separating out water, air, and particulates before they reach your injectors and high-pressure pump. Cleaner fuel means longer injector life and more consistent performance, especially under heavy load.
Are you a real FASS dealer?
Yes — we're an authorized FASS Fuel Systems dealer, so you get genuine product and a professional, correctly-sized installation with support afterward.
Is the FASS EGR Solutions system a delete?
No. EGR Solutions is a filtration product that helps reduce soot reaching the intake while keeping your truck street-legal. We install legal, emissions-compliant hardware — not deletes.
Related services
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From the shop
Worth a read
How a FASS Fuel System Extends the Life of Your Diesel
Your injectors and high-pressure pump are the most expensive parts on your diesel — and your fuel decides how long they live. Here's how a FASS system protects them.
10 Signs Your Diesel Needs Attention Before It Strands You
Diesels usually warn you before they break. Here are the ten signs Athens-area truck owners should never drive past — and what each one is trying to tell you.
Athens, GA & Northeast Georgia
Need fass fuel systems? Let's get it fixed.
Call or text Appalachian Auto & Diesel and describe what's going on. Honest diagnosis, fair pricing, and repairs done right the first time.