Lower Units
Mariners Warehouse's Lower units come with a three-year, fault-free warranty which means that the lower unit will be covered for any failure that requires the lower unit to be replaced or repaired. This is truly a remarkable warranty. Hit a rock, suck up some fishing line, drag the lower unit up the boat launch by mistake, it does not matter, the lower unit will be covered by SEI's fault-free warranty.
Introduction to Outboard Lower Units
Outboard lower units serve as the backbone of a boat's propulsion system, converting engine power into thrust beneath the waterline. Crafted from robust materials like aluminum or stainless steel, these units are engineered to withstand the rigors of marine environments.
Key Components and Functionality
Lower units house an array of essential gears, shafts, and bearings critical for optimal maneuverability and performance on the water. Their design and construction vary to accommodate different boat types and engine models.
Gear Ratio and Performance Optimization
A crucial aspect of lower units is their gear ratio, which dictates the speed and torque transmitted to the propeller. By adjusting gears, boaters can tailor performance for specific conditions such as high-speed cruising or towing.
Water Pump Assembly and Cooling Mechanism
Lower units feature a water pump assembly tasked with cooling the engine by drawing in water from the surrounding environment.
Yamaha 76 degree V6 200-250 HP Counter Rotation
Yamaha 90 degree 150-200 HP
Yamaha 76 degree 200-250 HP
Yamaha 90 degree 150-200 HP Counter Rotation
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SE108 COUNTER ROTATING LOWER UNIT (Replaces Mercruiser Alpha One)
Yamaha 4 Stroke 115-130 HP
Outboard Lower Unit
Mariners Warehouse offers lower units with an exceptional three-year, fault-free warranty. This means that any failure requiring replacement or repair of the lower unit is fully covered.
