Stern Drives

Sterndrive Engineering (SEI) is the largest supplier of aftermarket stern drives in the world. The company makes replacement sterndrives for MerCruiser's® Alpha One® and Gen II stern drives. Sterndrive Engineering's outdrives are not remanufactured, they are entirely new. The SEI stern drive is made of parts that are completely compatible and interchangeable with MerCruiser's® Alpha One® and Gen II stern drives. The stern drives are assembled at SEI's factory in Clearwater, Florida.

SEI's stern drives come standard with a three-year, fault-free warranty. This means that the unit is covered for any failure that requires the stern drive to be repaired or replaced. Run it without lubrication, crash into a stump, suck up some fishing line, it does not matter, the SEI stern drive is always covered. SEI believes this warranty is one of the best warranties ever offered for a stern drive. Peace of mind while on the water is important, and SEI goes the extra distance to make sure that our products perform.

SEI has done extensive testing on all of the parts of the stern drive including the gears, shafts, bearings, and other wear parts to confirm performance and durability. SEI operates one of the only research lakes in the world dedicated to the testing of marine propulsion systems. The research center has a 40-acre lake with a stationary dock that allows for around-the-clock endurance testing of parts, such as gears, shafts, and bearings.

Sterndrive Engineering has the best prices by far for a replacement stern drive compatible with MerCruiser's® Alpha One® and Gen II. Often the company is asked 'How do we do it?'. Sterndrive Engineering buys its parts directly from manufacturers and passes the savings on to the customer. The marine industry is notorious for multiple layers of distribution which adds cost to the end user. By avoiding the middleman, SEI is able to offer a quality stern drive at a fraction of the price offered by others.

Sterndrive Engineering also offers a complete line of hydraulic parts compatible with MerCruiser® stern drives. The products offered include hydraulic pumps, trim cylinders, hoses, fittings, and other accessories. SEI also offers a gimble housing repair kit.