Car engine mounted on a stand in a garage workshop.

YOUR TRUCK

OUR EXPERTISE

F’N Diesel is your go-to shop for dependable diesel service in Sealy, TX. Honest diagnostics, precision repairs, and performance builds backed by experience and pride in every bolt.

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Diesel Performance

Unleash your truck’s full potential. From tuning and turbo upgrades to fuel system enhancements and airflow improvements, we deliver power, torque, and reliability that perform on and off the road.

Close-up view of a car engine with a red intake manifold and various engine components.

Wheels & tires

Performance meets style. From heavy-duty setups to custom wheels and all-terrain tires, F’N Diesel helps you find the perfect balance of function, traction, and look for your truck.

Close-up of a car's front wheel with a shiny chrome rim and a large off-road tire, parked on a concrete floor with a car jack visible underneath.

Diesel Diagnostics

We don’t guess — we diagnose. Using advanced scan tools and expert precision, we pinpoint problems fast before they become costly repairs. From injector testing to electrical tracing, accuracy is what sets us apart.

A mechanic's arm working on an engine head, installing or adjusting valves and components in a workshop or garage.

Repair & mAINTENANCE

From oil changes to full engine rebuilds, F’N Diesel keeps your truck dependable and road ready. Our experienced technicians handle every detail with care, ensuring your diesel runs stronger for longer.

Automotive engine component on workbench with tools and a red cloth in the background.

Suspension

Lift it, level it, or fine tune it. From complete suspension builds to shock replacements, we help your truck ride smoother and perform better on every terrain.

Underneath view of a lifted off-road vehicle showing suspension components, large tires, and a red painted axle and suspension arms.

Fleet services

Keep your business rolling. We provide routine maintenance and fast turnaround for commercial fleets of all sizes — so your trucks stay reliable, efficient, and ready for the job.

A mechanic working on a car engine with various engine parts and tools visible.

CUSTOM BUILDS

Your truck, your vision. Whether you want a full performance setup, turbo install, or one-of-a-kind custom build, we bring power and precision together to create a truck that turns heads and hauls hard.

A close-up view of metal mechanical parts, including black and silver components, arranged on a fabric surface with a blurred workshop or garage background.

Powder coating

Durable. Clean. Custom. Our powder coating services protect your parts from corrosion and add a sleek, professional finish built to last. Choose from a variety of colors and finishes to make your set up stand out.

Close-up of a black truck with its front wheel removed, exposing suspension components, brake rotor, and axel. The truck is on blue jack stands and the tire is placed on the floor nearby.

lighting

See and be seen. We install custom headlights, LED upgrades and auxiliary lighting designed for visibility, safety and style — built to perform on the road or off it.

A silver pickup truck with large wheels and illuminated blue underglow lights is driving on a highway at night, with a cityscape of tall buildings with lit windows in the background.

Tint

Keep your ride cool, protected, and private. Our high-quality window tint improves comfort, blocks UV rays, and gives your truck a clean, bold look that lasts.

Black pickup truck with open hood parked on road under cloudy sky.
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