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View Full Version : Need new Stern Drive, Which one and what gear ratio


Wally3300
04-06-2008, 03:33 PM
I have a 1993 Bayliner with the 3.0 Litre Mercruiser(120hp or 130hp I believe). I think I need the Alpha 1 Gen II replacement (SE116) but not sure what gear ratio I need. Also, I don't have the oil reservoir inside my engine housing. can someone confirm what SEI unit and gear ratio I need. The serial number for my Stern is 0F039961 if that helps. I look forward to any assistance.

Tech Support
04-07-2008, 08:48 AM
You need the SE116 series ALpha One Gen 2 drive. A 1993 model might have been a 2/1 ratio. If you are purchasing a complete drive (upper and lower) you can purchase our 1.98 ratio and be OK, if you operate below 3500' elevation.

Tech Support

Wally3300
04-07-2008, 07:43 PM
Thanks. I look forward to buying this unit. Can I also buy the prop from you? What would be the part number for the prop? I am going to buy the complete unit by the way. Thanks for the help.

Tech Support
04-08-2008, 10:01 AM
You can purchase a prop from us. Contact our sales department at 813-925-7127 8AM to 5PM Monday-Friday. Please have the diameter and pitch of the prop you are looking for.

Tech Support