SEI-Aftermarket Sterndrives & Outboard Lower Units
SEI is the largest supplier of aftermarket sterndrives and outboard lower units in the world. The company makes replacement sterndrives for MerCruiser's® Alpha One® and Gen II stern drives and replacement outboard lower units for Mercury®, Johnson/Evinrude® and Yamaha®. SEI's outdrives are not remanufactured, they are entirely new. The SEI drives are made of parts that are completely compatible and interchangeable with OEM and come standard with a three-year fault-free warranty.
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Complete Replacement Sterndrives
For MerCruiser's® Alpha One® and Gen II
For MerCruiser's® Alpha One® and Gen II
- The SEI drives are made of parts that are completely compatible and interchangeable with OEM. The drives are assembled at SEI's factory in Oldsmar, Florida and come standard with a three-year fault-free warranty. SEI also offers a complete line of hydraulic parts compatible with MerCruiser® sterndrives. The products offered include hydraulic pumps, trim cylinders, hoses, fittings, and other accessories. SEI also offers a gimble housing repair kit.
Replacement Outboard Lower Units
For Mercury®, Johnson/Evinrude® and Yamaha®
For Mercury®, Johnson/Evinrude® and Yamaha®
- SEI outboard lower units are made of parts that are completely compatible and interchangeable with OEM. The drives are assembled at SEI's factory in Oldsmar, Florida and come standard with a three-year fault-free warranty.
Replacement Parts, Tools, and Manuals
Gears, Bearings, Seal Kits, Water Pump Kits & More
Gears, Bearings, Seal Kits, Water Pump Kits & More
- Along with the complete sterndrive and outboard lower unit replacements, SEI also offers a complete line of individual parts and kits for MerCruiser's® Alpha One® and Gen II, Mercury®, Johnson/Evinrude® and Yamaha®.
API Marine
Starters Alternators Power Trim/Tilt Motors&Pumps
Starters Alternators Power Trim/Tilt Motors&Pumps
- In July of 2013, SEI acquired API Marine. The acquisition provides SEI with a premier brand and the manufacturing expertise to expand into the rotating marine electric parts business. API Marine supplies the marine and industrial electrical aftermarket with the highest quality replacement parts available. As a visionary manufacturer, our R & D Engineering Department is continually developing new products to meet the needs of today’s marine electrical aftermarket. We service retail and wholesale customers.