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Magnetic Drain Plugs

Discussion in '3rd Gen. Tacomas (2016-2023)' started by mquibble, Feb 5, 2022.

  1. Feb 5, 2022 at 5:44 AM
    #1
    mquibble

    mquibble [OP] Well-Known Member

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    I was thinking, why could I not simply take an appropriate size Neodymium magnet and place it directly on the plugs internal end? The magnetic force should hold it there solidly. I ask because I’m puzzled why we would need to purchase one that already has a magnet installed.

    The Neodymium magnets are stronger and I was thinking I could maximize the size I could locate on the end of the plug to provide the largest surface area and pulling force. I don’t think we would need to bond the magnet to the plug or recess install it either. Am I missing something?

    I suspect the size that would fit would provide approximately 10-15 lbs of pulling force ensuring anything in the differentials would wind up on the magnet.

    https://www.kjmagnetics.com/products.asp?cat=1
     
  2. Feb 5, 2022 at 7:10 AM
    #2
    Bronxguy

    Bronxguy Well-Known Member

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    I'd would be a little nervous about not having the magnet bonded to the bolt due to on/off road vibrations over the course of time between fluid changes, that's just me.
     
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  3. Feb 5, 2022 at 7:29 AM
    #3
    jmneill

    jmneill Well-Known Member

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    Wouldn't bother me any.
    I'd imagine if you hit something so hard as to jar the magnet loose, you'd be looking for a new truck and not the magnet.
     
  4. Feb 5, 2022 at 7:31 AM
    #4
    Skydvrr

    Skydvrr IG: @kalopsianick

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    Just stick it to the bottom of the pan.
     
  5. Feb 5, 2022 at 7:35 AM
    #5
    mquibble

    mquibble [OP] Well-Known Member

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    Yep, I would guess it to be virtually impossible to get a 10+ LB pull strength Neodymium magnet to move from the end of that drain plug. I’ll do this and report back. I’m going to go to Toyota today to purchase two new front and rear differential drain plugs. I’ll then measure the diameter at the end of each plug so I can order the magnets.
     
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  6. Feb 5, 2022 at 7:42 AM
    #6
    koditten

    koditten Well-Known Member

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  7. Feb 5, 2022 at 8:09 AM
    #7
    mquibble

    mquibble [OP] Well-Known Member

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    I’m doing this for the differentials. I use a Fumoto for the oil.
     
  8. Feb 5, 2022 at 8:42 AM
    #8
    Skydvrr

    Skydvrr IG: @kalopsianick

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  9. Feb 5, 2022 at 8:45 AM
    #9
    malatx

    malatx Well-Known Member

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    aren't those drain plugs for diffs already magnetized from factory?
     
  10. Feb 5, 2022 at 9:30 AM
    #10
    ernscott

    ernscott Well-Known Member

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    Would the magnet want to stick to the pan as you are installing it ? Then upon removal it could grab the pan and come away from the plug. How would you remove it at that point. Maybe add some oil resistant epoxy if there is such a material.
     
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  11. Feb 5, 2022 at 10:08 AM
    #11
    indoomitable

    indoomitable Baby-steppin' down the stairs

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    Thats what I thought too. Im changing front and rear diff fluid soon and got these just so I could change out the socket head bolts on the front diff. I read somewhere online that these will fit but dont have first hand knowledge yet.

    Fill - Toyota part# 9034118060

    Drain - Lexus part# 90341-24016
     
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  12. Feb 5, 2022 at 10:44 AM
    #12
    mquibble

    mquibble [OP] Well-Known Member

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    Good point
     
  13. Feb 5, 2022 at 10:45 AM
    #13
    mquibble

    mquibble [OP] Well-Known Member

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    Yes. I was thinking of supercharging them with Neodymium’s.
     
  14. Feb 5, 2022 at 2:48 PM
    #14
    mquibble

    mquibble [OP] Well-Known Member

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    7DBA07A7-B975-43E8-9607-B31947F5FB6E.jpg After perusing this site for information I’m going to swap out the standard plugs with the Toyota derivative with a larger magnet.

    stock
    90431-18021 front differential drain plug with small magnet/10mm hex
    90431-18057 rear differential drain plug with small magnet/24mm socket

    alternative
    90431-18035 front differential drain plug with large magnet/10mm hex
    90431-18044 rear differential drain plug with large magnet/24mm socket
     
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  15. Feb 5, 2022 at 2:51 PM
    #15
    Cudgel

    Cudgel “Tonka”

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  16. Feb 5, 2022 at 2:52 PM
    #16
    malatx

    malatx Well-Known Member

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    this looks pretty long, you sure it won't protrude inside too much and collide with gears and other moving parts?
     
  17. Feb 5, 2022 at 2:53 PM
    #17
    mquibble

    mquibble [OP] Well-Known Member

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    I will be able to tell when I install. Between the plug itself and a gauge I’m confident in being able to determine acceptability.
     
  18. Feb 5, 2022 at 2:59 PM
    #18
    Key-Rei

    Key-Rei Well-Known Member

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    E5woKdEWQAIqZET.jpg

    Screenshot_20220130-165602~2.jpg

    It's got a bonded magnet and it's low profile.
     
  19. Feb 5, 2022 at 3:01 PM
    #19
    mquibble

    mquibble [OP] Well-Known Member

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    This is just one of many reasons why a Land Cruiser costs what it does. I hear you and I hear many others who ask why do I think I’m smarter than a Toyota engineer. I’m not, just take a look at what components are installed on the Land Cruiser by Toyota engineers and you will find higher quality components. It’s FREE to look and inquire.
     
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  20. Feb 5, 2022 at 3:02 PM
    #20
    mquibble

    mquibble [OP] Well-Known Member

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    Yep, just as indicated in post #14. Thanks!
     
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