Sterndrive Engineering — Performance, Value & a Warranty all in one!
Stern Drive

These replacement drives and outboard lower units, including all of the internal parts, are fully compatible and interchangable with the OEM drives. At our low prices, it is virtually impossible to justify spending the time and money to repair a worn-out drive. In addition, the drives come with a three-year warranty.

SE106™
Replaces MerCruiser's® R/MR/Alpha One® sterndrive (1973-91)
A complete unit is your best buy. However upper and lower units are sold separately. Upper units are available in your choice of 1.47, 1.62, 1.81 & 1.94 gear ratios. Lower units available with counter-rotation.










SE116™
Replaces MerCruiser's® Gen II sterndrive (1991-present)

Upper Units are available in your choice of 1.47, 1.62, 1.81 & 1.94 gear ratios. As with all SEI products, upper and lower units feature all new parts throughout. Lower units available with counter-rotation.





SE121™
Replaces MerCruiser's® Bravo One I/O

This lower unit features all new parts throughout and our unbeatable 3-year fault free warranty.






 
200 Series |  300 Series | 400 Series
SE206™
Replaces most Mercury 2.5L

Lower unit available in 1.87 and 2.0 ratio with choice of 20" or 25" shaft. All new parts throughout and features SEI's unbeatable 3-year fault-free warranty.






SE216™
Replaces most Mercury 3.0L
Lower unit available in 1.62 and 1.75 ratio with choice of 20", 25", 30" or two-piece driveshaft. All new parts throughout and features SEI's unbeatable 3-year fault-free warranty.





SE306™
Replaces most Johnson/Evinrude V6

This lower unit features only new parts used throughout and our unbeatable 3-year fault free warranty.







SE416™
Replaces most Yamaha® 90° V6
Lower unit available in 1.86 and 2.0 ratio. For the 1.86 choose 2-stroke or 4-stroke, as well as your choice of 20" or 25" driveshaft. Only new parts are used throughout and features SEI's unbeatable 3-year fault-free warranty.






SE421™
Replaces most Yamaha® 76° V6
This lower unit features only new parts used throughout and our unbeatable 3-year fault free warranty.








 

SHOP SEI

 

Hours of Operation EST

Summer Hours-
(March -October)
Mon-Fri
, 8am-5pm


Winter Hours-
(November - February)
Mon-Thu
, 8am-5pm
Fridays 8am-12pm

115 Forest Lakes Blvd. S.
Oldsmar, FL 34677

tel: 813.925.7127
fax: 813.925.7064

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The three year fault-free warranty covers any damage to the drive that requires it to be repaired or replaced including failures resulting from lack of oil, fishing line, impact, neglect, and other abuse. Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiser®, Alpha One®, R, MR, Gen II and Bravo One® stern drives. MerCruiser®, Alpha One®, Gen II, R, MR and Bravo One® are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products manufactured and/or sold by Brunswick Corporation will not apply to products manufactured and/or sold by SEI, or to products damaged due to the operation of an SEI product. Sterndrive Engineering, Inc. is not affiliated with Mercury®; Yamaha®; OMC® or their products. All reference to their trademarks and trade names are the property of the respective owners.