1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Found coolant leak - what is this part?

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

  1. Squirrelofdoom

    Joined:
    Feb 2, 2012
    Messages:
    635
    Likes Received:
    18
    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
     
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,310
    Likes Received:
    1,541
    part number: 06A 121 132 AP - i paid £11.28 with 8% discount from TPS.
     
  4. Squirrelofdoom

    Joined:
    Feb 2, 2012
    Messages:
    635
    Likes Received:
    18
    Thanks Karl, guess you've had the same problem as me before then :)
     
  5. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,310
    Likes Received:
    1,541
    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.
     
  6. Squirrelofdoom

    Joined:
    Feb 2, 2012
    Messages:
    635
    Likes Received:
    18
    Cool, I'll order one today. Thanks mate. Any clue on the other boss off the head which seems like it's weeping?
     
  7. superkarl

    superkarl MAN OF STEEL

    Joined:
    Mar 28, 2010
    Messages:
    8,310
    Likes Received:
    1,541
    looks oily to me?? in which case would be the rocker cover/half moon seal imo
     
  8. Squirrelofdoom

    Joined:
    Feb 2, 2012
    Messages:
    635
    Likes Received:
    18
    yeah, probably is. Also, just noticed your sig - hilarious :)
     
  9. Squirrelofdoom

    Joined:
    Feb 2, 2012
    Messages:
    635
    Likes Received:
    18
    cool, went to TPS and got one! Thanks mate
     
    superkarl likes this.
  10. s3dave

    s3dave TFSI Hybrid
    Supporter

    Joined:
    Nov 11, 2009
    Messages:
    10,120
    Likes Received:
    732
    They usually crack on the molding seam, so seem normal once off....
     

Share This Page