/ Diesel repair & parts — Chattanooga, TN
Built to
torque
spec.
Over 20 years turning wrenches on Mitsubishi Fuso, Cummins, Deutz, Hatz, Duramax, and Power Stroke. Honest upfront pricing, fast turnaround, no shortcuts.
20+
Years on diesel
60K+
Parts in catalog
ASE
Certified techs
8:00
Doors open daily
(a) Capabilities
What we wrench
Engine Diagnostics
Full-system fault scan, pressure testing, and live data on every major diesel platform.
02Injection & Fuel Systems
Common-rail calibration, injector replacement, lift pumps, and fuel contamination cleanup.
03Turbo, DPF & Emissions
Turbo replacement, actuator calibration, DPF cleaning, and forced regeneration.
04Fleet Maintenance
Scheduled PM programs, 30K oil-change kits, and uptime reporting for commercial fleets.
05Transmission & Driveline
Clutch, torque converter, differential, and axle work for heavy-haul duty.
06Performance & Off-Road
Intakes, exhaust, gauges, suspension, and honest power builds that still live long.
(b) Catalog
Parts on the shelf
Mitsubishi Fuso
Filters, brakes, and driveline for FE/FG/FK cab-overs.
Browse →Cummins
Injectors, turbos, fuel systems, and engine components.
Browse →JLT Performance
JLT cold air intakes and oil separators for diesel and gas trucks.
Browse →Hatz
Single and twin-cylinder industrial diesel service parts.
Browse →Cold Air Intake
JLT and performance intake systems for diesel trucks.
Browse →Air Filter
OEM-spec and high-flow elements, wraps, and cleaning kits.
Browse →Google reviews
What Chattanooga says
“Southeast Diesel has worked on all my trucks for years. They are thorough, and when they send your vehicle back out to you, you can rest assured it was repaired properly.”
“Remarkable. First day of vacation, headed out of town with a trailer attached, and I started having issues. I showed up at 10:00 on a Friday morning full of doubt they’d even look at it — they took care of me.”
“Passing through Chattanooga and had the engine light on. Stopped at Southeast Diesel — super friendly, and Mike was extremely helpful. He went out of his way to help me.”
“Nothing but great things to say about Southeast Diesel. Mike is incredibly helpful troubleshooting problems and worked us through ours so we could fix what we could ourselves.”
(c) The Garage
Notes from the bay
(d) Get in touch
Bring us the truck.
Doors open Mon – Fri, 8:00 AM – 4:30 PM. Call for a quote — honest, upfront, and fast. Fleet accounts welcome.