Threads 1 to 8 of 8

Forum: SE 121/122 Support

(Replaces MerCruiser's® Bravo One® I/O 1991-Present)

  1. Coverting from Bravo 2 to SEI 121

    Started by mr300z87, 09-26-2011 08:34 PM
    • Replies: 5
    • Views: 13,753
    03-27-2013, 09:55 AM Go to last post
  2. 121 new gears and seals

    Started by rarenivas, 04-19-2010 01:04 AM
    • Replies: 1
    • Views: 7,200
    04-19-2010, 08:03 AM Go to last post
  3. 5hrs in on 122 to Bravo/502

    Started by fastechkid, 08-18-2008 01:37 PM
    • Replies: 1
    • Views: 6,597
    07-18-2009, 05:40 AM Go to last post
  4. Any Plans for An Upper or T/A

    Started by tamburello, 06-06-2009 09:35 AM
    • Replies: 1
    • Views: 5,371
    06-08-2009, 03:42 PM Go to last post
  5. 121 lower

    Started by rarenivas, 04-06-2009 09:20 AM
    • Replies: 4
    • Views: 5,953
    04-09-2009, 10:57 AM Go to last post
  6. Bravo Trim Cylinder Interchange

    Started by Baja, 09-29-2008 06:05 PM
    • Replies: 1
    • Views: 6,367
    09-30-2008, 07:39 AM Go to last post
  7. SE121 Bravo Lower Mods

    Started by kenboat, 03-19-2008 10:51 AM
    • Replies: 5
    • Views: 8,110
    08-13-2008, 12:47 PM Go to last post
  8. 121/122 rotation/gear specific or universal?

    Started by fastechkid, 08-12-2008 10:46 PM
    • Replies: 1
    • Views: 5,280
    08-13-2008, 07:35 AM Go to last post

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115 S. Forest Lakes Blvd.
Oldsmar, FL 34677

tel: 813.925.7127
fax: 813.925.7064


Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiser® Alpha One®, R, MR, Gen II and Bravo One® stern drives. MerCruiser® Alpha One, R, MR, Gen II and Bravo One® are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products and or sold by Brunswick Corporation will not apply to products manufactured and or sold by SEI, or to products damaged due to the operation of an SEI product.