Upper Unit Oldstyle SE106 | Sterndrive Engineering 90-104-01

Upper Unit Oldstyle SE106 | Sterndrive Engineering 90-104-01

SEI Upper Unit Oldstyle SE106 | Sterndrive Engineering 90-104-01

SE106 which fits/replaces MerCruiser's R/MR/Alpha One sterndrives (1973 to 1990)

Comes with a 8-1/8 input yoke. Look below for additional items you may need for assembly. This drive is generally used on older inline 6 and 4 cylinder engines.


These replacement upper 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 sterndrive. In addition, the drives come with a three year warranty.


Brunswick Corporation is the Original Equipment Manufacturer (OEM). Sterndrive Engineering, Inc. (or SEI) has no affiliation with the Brunswick Corporation. Sterndrive Engineering, Inc. manufactures a stern drive designed to replace Mercury Marine's MerCruiser, Alpha One, R, MR, and Gen II stern drives. MerCruiser, Alpha One, Gen II, R, and MR are trademarks of the Brunswick Corporation. As with any after-market product, any warranties governing products manufactured and/or sold by Brunswick Corporation will not apply to products manufactured and/or sold by Sterndrive Engineering, Inc. (or SEI) or to products damaged due to the operation of an SEI product.