At SMI Marine, we understand that your boat’s engine is its heartbeat. When performance declines or warning signs appear, fast and accurate service is critical. As Louisville’s trusted marine repair facility, we provide comprehensive engine repair and maintenance services designed to restore reliability, maximize performance, and extend the life of your watercraft.
Modern marine engines are highly sophisticated systems that require specialized tools and expertise. Our technicians utilize advanced diagnostic equipment to quickly identify issues in both inboard and outboard engines. From fuel system inefficiencies and ignition failures to cooling system blockages and electrical irregularities, we pinpoint the problem at its source—saving you time and money.
Whether your vessel runs on an inboard, outboard, or stern drive configuration, our team has the expertise to handle it. We service a wide range of engine brands and models, ensuring manufacturer-recommended procedures are followed for every repair. From routine maintenance to full engine rebuilds, we approach each job with precision and care.


Common diagnostic and repair services include:
Engine performance troubleshooting
Fuel system inspection and repair
Cooling system service and impeller replacement
Ignition system repairs
Starter and alternator replacement
Oil leaks and gasket repairs
Overheating diagnostics
Battery and charging system service