SEI MARINE PRODUCTS - Alpha 1 Gen 2 Upper Gear Ratio 1.94/2.40

Description: General Information for Selecting and Purchasing an SEI 116 Upper Gearcases SEI 116 upper gearcases replace Mercuiser Alpha I, GEN II uppers produced from 1991 to current. Serial numbers covered are OD469858 and above. You must insure that the correct upper SEI gearcase is selected to maintain the correct gear ratio. See the chart below, although it is best to verify by the tooth counts as there are some variations. You can also contact us with your serial number to verify. SEI Part Number Gear Ratio Tooth Count Typical Engine Application 90-116-01A 1.94:1/1.98:1 20/24 3.0 liter, 4 cyl 90-116-01B 1.81:1/1.84:1 17/19 4.3 liter, V6 90-116-01C 1.62:1/1.65:1 24/24* 5.0 liter, V8 90-116-01D 1.47:1/1.50:1 20/22 5.7 & 5.0 liter, V8 *24/24 is the original Mercruiser tooth count for this ratio. SEI has increased the strength of this gearset by changing the tooth count to 20/20. This allows the gear teeth to be much larger and therefore stronger. Some early model Alpha I Gen II have a dipstick in the top cap. This feature was discontinued by 1995. SEI 116 upper units do not have this dipstick. SEI 116 upper gearcases include the provisions for the Mercruiser gear lube monitoring system. If you are not sure whether you Mercruiser Alpha I is a generation I or II, use the pictures below to help determine which generation Alpha I you are replacing. Any reference to Original Equipment Manufacturer (OEM) names, trade names, specifications, or part numbers is for informational purposes only. Sterndrive Engineering Inc. is not affiliated with any of the OEMs referred to in this ad. Copyrights and Trademarks belong to their respective companies. Copyright 2018 Sterndrive Engineering Inc. All Rights Reserved. Powered by SixBit's eCommerce Solution

Price: 1250 USD

Location: Oldsmar, Florida

End Time: 2024-02-21T17:05:17.000Z

Shipping Cost: 50 USD