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...Choose Options
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Sterndrive Replacement Upper Unit for Mercruiser R, MR, Alpha One 1.62 Ratio
- 1.62 Ratio also replaces 1.65 ratio
- Comes with a 9-9/16" [new style] input yoke.
- For Alpha One Gen I Sterndrives (1972-1990)
- 3 Year Manufacturer's Warranty
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.
Sterndrive Engineering Model Chart
Refer to Sterndrive Engineering's model chart below to find your proper Mercruiser Sterndrive Replacement. These are typical applications; it is best to confirm your ratio by couting the teeth in the upper. Although great care was taken in the creation of this guide, its accuracy cannot be guaranteed.
|Model||Year Range||Serial Range||Notes (See Below)||Standard Rotation||Counter Rotation|
|165||1970-1977||2763442 and up||2,4,5,6||1.62||1.62 CR|
|485||1980-1982||4893835 and up||2,4,5,6||1.81||1.81 CR|
|888||1971-1977||3106717 and up||4,5,6||1.47||1.47 CR|
- Unit has an 8 spline driveshaft on the lower unit. If your unit is original, you need to purchase a complete.
- Unit has a short yoke on the upper driveshaft. We refer to this as the “Old Style”
- ***Applies to all inline 4 and inline six cylinder engines up until and including 1982***
|Engine Configuration||Horsepower||Gear Ratio||Tooth Count||Standard Rotation||Counter Rotation|
|Inline 4 Cyl. 2.5L/3.0L||120,140||1.98/1.94||20/24||1.94||1.94 CR|
|Inline 4 Cyl. 3.7L||170||1.84/1.81||17/19||1.81||1.81 CR|
|Inline 6 Cyl.||160/165||1.65/1.62||24/24||1.62||1.62 CR|
|V6 4.3L||185/190||1.84/1.81||17/19||1.81||1.81 CR|
|V8 305 2 Barrel Carb.||200||1.65/1.62||24/24||1.62||1.62 CR|
|V8 305/350||230/260||1.50/1.47||20/22||1.47||1.47 CR|
California Residents: WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
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