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Found coolant leak - what is this part?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Squirrelofdoom, Jun 25, 2013.

  1. Squirrelofdoom
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    Squirrelofdoom Member

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    [Jun 25, 2013]
    Hi guys,

    So I've been losing coolant recently, was worried it was off the recent turbo work I've done, but no worries, that's fine. I found the leak on the right hand side of the head, underneath a 4-way coolant junction that bolts to the head via 2 allen key bolts (where the temp sensor plugs into). I've attached a picture of what I can see.

    IMAG1267.jpg

    I think it is this 4 way junction that is leaking given where you can see the pink coolant on the gearbox below it. However, there is also something I've circled in red which also appear to be wet - but I don't know what it is or if I should be investigating that too.

    So, could someone help out with:

    1) What is the 4 way junction thing that bolts to the head? Does anyone have a part number for this? Do they usually leak when they get a bit old?

    2) What is the other part that appears to be wet? Should I be worried about that?

    Thanks guys!

    Aran
    #1
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  3. superkarl
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    superkarl MAN OF STEEL

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    [Jun 25, 2013]
    part number: 06A 121 132 AP - i paid £11.28 with 8% discount from TPS.
    #2
  4. Squirrelofdoom
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    Squirrelofdoom Member

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    [Jun 25, 2013]
    Thanks Karl, guess you've had the same problem as me before then :)
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  5. superkarl
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    superkarl MAN OF STEEL

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    [Jun 25, 2013]
    yeh its common for the housings to crack. i couldnt even see my crack till i got it off but knew it had to be that.
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  6. Squirrelofdoom
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    Squirrelofdoom Member

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    [Jun 25, 2013]
    Cool, I'll order one today. Thanks mate. Any clue on the other boss off the head which seems like it's weeping?
    #5
  7. superkarl
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    superkarl MAN OF STEEL

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    [Jun 25, 2013]
    looks oily to me?? in which case would be the rocker cover/half moon seal imo
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  8. Squirrelofdoom
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    Squirrelofdoom Member

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    [Jun 25, 2013]
    yeah, probably is. Also, just noticed your sig - hilarious :)
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  9. Squirrelofdoom
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    [Jun 25, 2013]
    cool, went to TPS and got one! Thanks mate
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  10. s3dave
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    s3dave TFSI Hybrid

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    [Jun 25, 2013]
    They usually crack on the molding seam, so seem normal once off....
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