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Transmission overflow plug gasket?

Discussion in 'General Tundra Discussion' started by Atomic City Tundra, Sep 2, 2018.

  1. Sep 2, 2018 at 9:39 AM
    #1
    Atomic City Tundra

    Atomic City Tundra [OP] Cam Tower Leak Addict

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    I just finished up changing the fluid in the transmission on my 2013. I noticed that when I left the truck sitting overnight to let it cool below the check temperature, the gasket for the overflow/check plug is leaking. Upon closer inspection, it looks like they slapped two gaskets on top of each other during assembly. Worked out so far, but now it is seeping.

    I haven't had much luck finding part numbers on the OEM online places (I guess they really don't want you servicing these things themselves. So, I did a generic search and found this link:

    https://www.amazon.com/Rexka-Transmission-Gasket-4Runner-35178-30010/dp/B07B7HKD54

    Looks like it is the right size according to my measurements, and it appears that Tundra is on the list for what it fits. Was wondering if @Roman could help out and confirm?
     
  2. Sep 2, 2018 at 11:51 AM
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    SOB

    SOB Big Member

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    Just did a drain/fill on my tranny. I went to my dealer and told them what I was looking for and they got me the gaskets and o ring. Sorry I don’t have the part numbers but I bet a call/visit to your dealership parts dept would get it figured out.
     
  3. Sep 4, 2018 at 10:17 AM
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    Roman

    Roman Toyota Parts Master Vendor

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    It just depends on which plug you're needing it for. Check out the parts diagram here:

    Untitled.jpg
     
  4. Sep 4, 2018 at 10:27 AM
    #4
    Atomic City Tundra

    Atomic City Tundra [OP] Cam Tower Leak Addict

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    It would be 35106B in that diagram. I just did a search on toyotapartsdeal.com for that part code, and it came up with the one I ordered this weekend. So I think that I am ok. However, there are a couple of other sites that say it won't fit. But, the dimensions listed match what I measured. So, hopefully it will work.

    Thanks!
     
    Roman likes this.
  5. Sep 4, 2018 at 12:28 PM
    #5
    Roman

    Roman Toyota Parts Master Vendor

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  6. Mar 5, 2020 at 11:52 AM
    #6
    TuNdRaRiDe

    TuNdRaRiDe New Member

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    Omg guys thanks changed the transmission fluid to my tundra and for the life of me I couldn't find that gasket part number thanks
     
  7. Sep 24, 2021 at 1:33 PM
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    737fixer

    737fixer New Member

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    Transmission will require two washers and one O-ring. These numbers are good for every Tundra ever made along with the vast majority of all Toyota/Lexus vehicles since mid 90's.

    35178-30010 - you will need two of these. One for drain plug and one for fluid leveling or overflow plug.
    90301-15004 - one of these for the 24mm fill plug. This one most likely won't need changing but there cheap.

    Only issue is the two crush washers(35178-30010) are normally available at ever dealer in N. America but the single O-ring is almost never in stock at dealerships and need to be ordered online.
     
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  8. Oct 8, 2021 at 1:21 AM
    #8
    FillAdams

    FillAdams New Member

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