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  1. #1
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    2011 250HO lower unit

    Which is the best one and do the SEI lower units hold up? Where’s the best place to get one?

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    #2
    The SEI case does pretty well and reasonably priced. You would not receive a warranty since your engine is an H.O.

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    #3
    Is the M model lower the best one ?

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    #4
    check gear ratios? might need to re-prop if the ratios are different
    2022 z519 cup 225 merc 4s ser # 3B210484. 2--hds12 live units. 2 poles, atlas plate, ghost, hamby's, active target, merc digital gauges
    2002 basscat pantera 3 (dad bought new) sold 8-2-22
    2000 stratos 20 ss (bought new) 200 hp Rude ficht great boat/motor sold 11-21
    pulled by a 2500HD Denali
    proud dad of an ARMY Captain
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    #5
    I have heard the lightning case isn’t as good as the M. True?

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    #6
    Quote Originally Posted by SCOTT196 View Post
    I have heard the lightning case isn’t as good as the M. True?
    This would be true which is why Evinrude went out an replaced a number of lighting lower units under warranty with the M magnum lower units. This was a durability issue.

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    #7
    Thx

  8. SC Club Moderator ChampioNman's Avatar
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    #8
    You will lose some top end ad the M has a bigger profile.

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    #9
    Good to know, thx again for info.

  10. Member BigBass044's Avatar
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    #10
    Get in contact With Jack At Stone and Sons Marine out of Houston TX, one of the original Dealers of Evinrude from way back and they have parts for literally every Evinrude motor, when I needed a New LU for my 2012 E-Tec HO I shipped them mine, they took it apart and told me the gears were stripped, and that the housing was bad. We discussed and I had them build another Magnum II LU for me, They shipped me the Built LU and it has been flawless, definitely recommend them your built lower unit will be better than new, and it has a 1 year warranty.
    2012 Ranger Z520 Comanche
    Evinrude E-Tec 200HP

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    #11
    Good to know! Thx for the info!