Diesel Repair & Custom Engine Builds
Gear 5 Engines is a diesel repair shop and engine builder in Red Oak, TX. From diagnostics and rebuilds to performance engine builds, we keep your truck running strong.
Tell us about your truck and we'll get right back to you.
What we do
Full-service diesel repair and custom engine building for trucks and fleets.
Diagnostics and repair for Powerstroke, Cummins, and Duramax — from check-engine lights to major mechanical work.
Ground-up performance and stock rebuilds, blueprinted and assembled to spec for reliable power.
Turbo upgrades, fuel system work, and tuning to get the most out of your diesel without sacrificing durability.
Preventive maintenance and scheduled service to keep work trucks and fleets on the road.
Injector, pump, and fuel delivery service and replacement for hard-starting and rough-running diesels.
Computerized diagnostics to pinpoint problems fast and quote work with no guesswork.
Why Gear 5 Engines
Diesel specialists
Powerstroke, Cummins, and Duramax work done right the first time.
Honest quotes
Clear diagnostics and up-front pricing — no guesswork, no surprises.
Fast turnaround
We know downtime costs you money and get your truck back quickly.
Built by people who know diesels
From routine diagnostics to full performance builds, every job gets the same attention to detail. We use quality parts, do the work right, and stand behind it.
Ready to get your truck back on the road?
Tell us what's going on and we'll get you a straight answer. Call the shop or send a message.