Diesel Engine Rebuilds – Built to Last, Backed by Experience

At JS Gonsman & Sons, we know how much you rely on your diesel engine — it powers your truck, your equipment, and in many cases, your livelihood. When your engine starts to wear down or fail, you don’t need a quick patch. You need a rebuild done right.

Our team takes pride in providing complete, high-quality diesel engine rebuilds that restore power, improve performance, and extend the life of your equipment. Whether you’re driving a semi, operating heavy machinery, or managing a fleet, we’ll help you get every mile and every hour you can from your investment.

We Don’t Just Fix It — We Bring It Back to Life

A rebuild is more than just replacing parts. It's about restoring your engine from the inside out with care, precision, and the right tools. Our experienced diesel mechanics fully disassemble the engine, inspect and clean all components, and replace worn-out or failed parts with quality replacements — so you leave with an engine that’s as strong as the day it was built.

Our Diesel Rebuild Services Include:

• Full teardown and internal inspection

• Cylinder head and piston repair/replacement

• Crankshaft polishing or replacement

• New gaskets, seals, rings, and bearings

• Fuel and oil system inspection

• Reassembly with torque specs and testing

• Post-rebuild diagnostics and tuning

What We Rebuild:

• Heavy-duty diesel trucks (Cummins, Duramax, PowerStroke, Detroit, CAT, etc.)

• Agricultural and construction equipment

• Industrial diesel generators

• Fleet & commercial vehicles