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Add to CartSterndrive Engineering Mercruiser Gen II Replacement Upper Unit 1.81 Ratio
Replacement Upper Unit for Mercruiser Alpha One Gen II Sterndrives 1991- Current.
Click to Download Sterndrive Engineering SE116 Stern Drive Assembly Instructions
Item is subject to a 20% restocking fee (Boat Covers, Bimini Tops, Outdrives, Drop Ship Items and Special Order Parts)!
**Year, Serial Number, and Horsepower are required to order. Please contact us with this information after you place your order otherwise processing will be delayed.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Other Details
SternDrive Replacement Upper Unit for Mercruiser R, MR, Alpha One. 1.81 Ratio 1.81 Ratio also replaces 1.84 ratio For Alpha One Gen I Sterndrives (1972-1990) Comes with a 9-9/16" [new style]...
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Sterndrive Engineering Mercruiser Alpha One Gen II Replacement Upper Unit 1.47 Ratio For Mercruiser Alpha One Gen II Sterndrives 1991 - Present. SE116 1.47 Ratio also replaces the 1.5...
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Sterndrive Engineering Mercruiser Alpha One Gen II Replacement Upper Unit 1.94 / 2.40 Ratios For Mercruiser Alpha One Gen II Sterndrives 1991 - Present. SE116 1.94 ratio also replaces the 1...
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Sterndrive Engineering Mercruiser Alpha One Gen II Replacement Upper Unit 1.62 / 2.0 Ratio Replacement Upper Unit for Mercruiser Alpha One Gen II Sterndrives 1991- Current. SE116 1.62 Ratio...
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Sterndrive Engineering Mercruiser Alpha One Replacement Upper Unit 1.81 Ratio w/ Short Yoke 1.81 ratio also replaces the 1.84 ratio Comes with an [old style] 8-1/8" input yoke. This drive is...
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SEI Mercruiser Outboard 4.3L Repl Upper Unit 1.81 Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready...
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MerCruiser 5-5111400TP Alpha One Gen II 1.81 Counter Rotation Outdrive This is a replacement for MerCruiser Alpha One Gen II (1998 & Up) outdrives with a 1.81 gear ratio, 0L100040 & Up...
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MerCruiser 5-5121400TP Alpha One Gen II 1.81 Standard Rotation Sterndrive This is a replacement for MerCruiser Alpha One Gen II (1998 & Up) outdrives with a 1.81 gear ratio, 0L100040 & Up...
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Mercruiser 43-853643A-2 Upper Gear Set - 1.81 Genuine OEM Mercury-Mercruiser part. Fits: Alpha One Gen II (s/n 0L000040 and above) (1998 & newer) & Vazer drive 17-19 Teeth 1...
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