What's on the back of engine, above oil pan? (Wet!)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by MrPete, Jul 19, 2025.

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  1. CliffordRedPrius

    CliffordRedPrius New Member

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    It is post #21 by NutzAboutBolts

    I also have a picture as well from my car. I’ll upload it here. I actually found the part number 90345-A0002. It’s on the cylinder block. Took me a bit to find it on the diagram. Has anyone had this leak before?
     

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    #41 CliffordRedPrius, Mar 21, 2026 at 2:26 AM
  2. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Pretty sure you're looking up, there's a driveshaft in foreground, that's all I got so far.
     
    #42 Mendel Leisk, Mar 21, 2026 at 12:27 PM
  3. RightOnTime

    RightOnTime Senior Member

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    Yes it is very common as an engine builder to see this. Toyota used the wrong liquid sealant (Green) and over time oil compromised the thread
     
    #43 RightOnTime, Mar 21, 2026 at 1:06 PM
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