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  1. #1
    Member
    Join Date
    Nov 2015
    Location
    Tuscaloosa , AL
    Posts
    379

    2 different lower units ?

    Don,
    Noticed that there are 2 different Torque Master L/U's coming on the new ProXS 250's on bass boats. Mine has a June 2019 mfg date and has 3 holes (per side) water inlets. Ones after July are coming with 5 holes per side.
    Both show same PN on Merc site.
    Example: 2b685615 (3 holes) TM
    2b691597 (5 holes) TM

    What is reason for the more recent update?

    Thank you
    Attached Images Attached Images
    Last edited by FastCat04; 10-07-2019 at 02:43 PM.
    2020 BassCat Eyra w/Merc v8 Pro XS (2b685615)
    2008 Triton TR196 w/Merc200 (1B505505)
    2024 Havoc Alum Duck boat w/ Mod Mercury 3-cyl 2-stroke
    0T899507 w/1B728726 powerhead (sleeved/ported/welded chambers, mod carbs/tuner &light flywheel)
    Previously owned:
    2018 Eyra w/Merc250 (2b525704)
    2015 PII w/Merc200 (2b115304)
    Brooks tunnel w/Merc 200 carb & CLE l/u motor (A913415)

  2. Member low slung cruiser's Avatar
    Join Date
    Jul 2008
    Location
    LKG, LITTLETON, NC
    Posts
    4,858
    #2
    Sterling 22XS / Mercury Pro XS V8

  3. Member fishnfireman's Avatar
    Join Date
    Apr 2005
    Location
    Amarillo
    Posts
    12,496
    #3
    My first guess would be the early ones were not getting enough H2O.

  4. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    95,243
    #4
    Increased water supply- and it's a simple "running change" in production.

    Rumor has it that it will make it a bit easier to run the engine on earmuffs as well (was nearly impossible w/3 openings only).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  5. Member
    Join Date
    Nov 2015
    Location
    Tuscaloosa , AL
    Posts
    379
    #5
    Thank you sir !!!
    2020 BassCat Eyra w/Merc v8 Pro XS (2b685615)
    2008 Triton TR196 w/Merc200 (1B505505)
    2024 Havoc Alum Duck boat w/ Mod Mercury 3-cyl 2-stroke
    0T899507 w/1B728726 powerhead (sleeved/ported/welded chambers, mod carbs/tuner &light flywheel)
    Previously owned:
    2018 Eyra w/Merc250 (2b525704)
    2015 PII w/Merc200 (2b115304)
    Brooks tunnel w/Merc 200 carb & CLE l/u motor (A913415)