Cat Marine Engine Rebuilds
caterpillar Marine
The Alternative to Engine Replacement
A Caterpillar marine engine rebuild delivers modern performance and extended service life at a fraction of the cost of a full engine replacement. Thompson Marine performs certified CAT® marine engine rebuilds for commercial vessel operators across the Gulf Coast and the Americas, restoring reliability, updating performance, and maintaining regulatory compliance without the capital cost of a new engine or a full repower.
CAT 3500 and 3600 Series Engine Rebuilds
The CAT 3500 and 3600 engine series are the workhorses of the commercial marine industry, powering tugs, workboats, offshore support vessels, and large commercial fishing fleets. Thompson Marine’s rebuild capability is concentrated on these engine series, giving the service team extensive experience with the specific requirements, tolerances, and common service needs of the engines in service across commercial fleets. These engines are engineered to be rebuilt, and a properly executed rebuild restores them to like-new performance specifications while incorporating the latest required updates and available performance enhancement upgrades.
What a Certified Rebuild Delivers
Thompson Marine performs every rebuild to Caterpillar’s published specifications, incorporating all required updates and available performance enhancement upgrades. The results can include:
MARINE SEGMENT
Built to Caterpillar Standards
Thompson Marine’s service team is factory-trained, equipped, and authorized to perform certified Caterpillar rebuild work. Genuine CAT parts are used exclusively throughout every rebuild. No substitute or aftermarket components. That commitment to OEM parts protects the integrity of the rebuilt engine and maintains eligibility for post-rebuild support and warranty coverage.
Engine rebuilds
The Cost Advantage of Rebuilding
For operators running CAT 3500 and 3600 series engines, the economics of a certified rebuild are compelling. A full rebuild typically costs a fraction of new engine acquisition and installation, while delivering performance that is functionally equivalent to a new installation. For vessels with sound hull structures and productive remaining service life, a rebuild extends the operational timeline of the entire vessel without the capital cost of a new engine or a full repower.
For fleet operators managing multiple vessels on the same engine platform, a phased rebuild program provides a structured path to fleet-wide modernization aligned with maintenance schedules and operational windows.
Parts Readiness and Post-Rebuild Support
Thompson Marine maintains extensive stock of genuine CAT parts for the 3500 and 3600 engine series, ensuring that the components required for a rebuild are available when the vessel reaches dry dock. Post-rebuild, Thompson Marine’s factory-trained technicians remain available for field service, planned maintenance, and emergency response across the Gulf Coast and the Americas throughout the engine’s extended service life.
