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Nov 21, 2018 · Replaced my lower unit last year on my Ocean Pro 150 with an SEI Unit. Three year warranty and no problems thus far with about 60-70 hours on it.

Oct 27, 2024 · The Boating Forum - Seakeeper Ride Feedback - Curious to hear from Seakeeper Ride users in the 20-30 ft...seems like a great leveling concept and I have heard that it makes …

Has anyone run a SEI gear case on a 300xs or X ? I am reading that they are a replacement option for the 250 XS but no where does it say anything about the 300xs. A SEi gear case is …

Dec 9, 2020 · SEI Sterndrive however would not let my mechanic put the new SEI leg on the boat even though they knew they were going to have to ship a brand new upper and completely …

I am looking at getting a replacement lower unit for my 1997 Mercury 115 hp outboard from Sterndrive Engineering. Reverse went out in the outboard and I have replaced about a half …

- (https://www.thehulltruth.com/boating-forum-14/) - - (https://www.thehulltruth.com/boating-forum/1201130-yamaha-lower-unit.html) 0421 01-02-2022 07:13 PM

Nov 9, 2025 · I recently cracked the bottem of my lower unit and now water is leaking into the oil. It’s a 1998 Yamaha 115 20inch shaft (c115tlrw) and I keep finding lower units for the 25inch …

Mar 7, 2024 · I have a 150 HPDI on a 03 1802, I was hitting 52 with just me in it. 4" Bob's JP. Lower unit took a hit and put an SEI replacement and higher gear ratio. Lost speed can hit 45 …

May 10, 2024 · The Boating Forum - YAMAHA 300 Recurrent Lower Unit Failure - Hi, I have a Twin 2012 Yamaha 300 Setup, about 8 - 10 months ago I had a Lower Unit Failure, and it was …