Our Mercury outboard inventory includes complete lower unit assemblies designed for seamless installation as well as individual parts and outboard kits to ensure your boat is back on the water in no time. Each Mercury outboard lower unit is built to OEM specifications, delivering the durability, reliability, and performance you expect from Mercury. We carry lower units for a variety of Mercury outboard models, so whether you have a 2-stroke or 4-stroke engine, we have the perfect fit for your needs.
At Wholesale Marine, we make shopping easy with fast, same-day shipping and excellent customer service. Our marine experts are available to help you find the right Mercury outboard lower unit rebuild kit and answer any installation questions. Try our parts finder to shop with confidence knowing you’re getting high-quality parts at wholesale prices.
FAQs
How do I know if the lower unit is bad on my outboard?
If you experience leaking geal oil, grinding noises, loss of power, or difficulty shifting, your outboard’s lower unit likely needs to be replaced.
How does an outboard lower unit work?
The outboard lower unit is like a gearbox with different components, responsible for the power transmission of the engine. All the power of the outboard motors is sent to the lower unit and transferred to the prop shaft and the propeller.
What causes a lower unit to fail?
The most common reasons for outboard lower unit failure include hitting underwater objects or obstacles, running aground, or colliding with floating objects.