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  1. #1
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    3.2L front coolant pipe

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    darnit, i managed to break this little nipple off when replacing the cooling fan control module. FYI to anyone doing this job to be very careful with this as now i have to take the belt off and replace the whole 120$ pipe.



    Just to confirm, the part number i need is 06E121045E and the seals come preinstalled (autohauz has seperate seals listed but you don't need them). You should however get the seal for the temperature sensor that plugs into the top of the pipe (the parts guy at the dealer recommended that anyway).

    Hopefully the local dealer has this in stock so i don't have to wait for shipping.

    has anyone else done this? any tips?

    Marko
    Last edited by estomax; 01-09-2019 at 11:10 PM.
    2007 A6 Avant 3.2L Black/Black, 235k miles

  2. #2
    Senior Member Three Rings
    Join Date
    May 23 2016
    AZ Member #
    373689
    Location
    Edmond, OK

    Hi Marko,

    If you buy the pipe from Audi, the pipe comes WITH the seals at the ends of the pipe already installed. If you haven't yet finished installing the fan assembly, I'd recommend doing this after you replace the pipe. It's not impossible to do with the assembly in place, but it certainly gives you a lot more room to play with.
    07 A6 3.2- Out & In- Morimoto 5500k & Nokya 2500k, DeAutoLED Reverse, LP, & Footwells, Ziza Full Interior, 10" lo-pro Pioneer, Audi Aluminum Pedals
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    "What is best in life? -Kill your enemies. See them driven before you. And hear the lamentation of their women" Conan the Barbarian

  3. #3
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    thanks blkmax, you are right, the seals come pre-installed, just picked it up at a local dealer, on autohauzaz the seals were listed separately, i will correct my first post for that.

    what a pain in the arse this pipe is. The o-ringed pipes that plug into the right side require almost superhuman strength to pull off, and the clamps on the hoses are some special design that i don't know how to clamp because i am not able to get this hose back on (and the clamp squeezed). i feel like the connector above needs to come off but that also won't budge, it seems to have two squeeze handles on the bottom but i can't get it to release.

    how did you guys squeeze the big hose clamp in the middle to get the center section of the coolant pipe on? needle nose pliers dont seem to do the trick. this is a pretty zoomed in picture of the two issues i am ending the night at.



    can i rip that clamp off and just use normal worm clamps?

    cheers
    Marko
    2007 A6 Avant 3.2L Black/Black, 235k miles

  4. #4
    Senior Member Two Rings B. Rock's Avatar
    Join Date
    Jul 27 2008
    AZ Member #
    31331
    My Garage
    91 CQ
    Location
    Denver, CO

    I've got a long pair of angled pliers that I used on that hose if memory serves. These here: https://www.harborfreight.com/hand-t...ers-61588.html
    Kind of a pain, yes, but I'm not sure I'd want a gear/worm clamp on there instead.

    I pulled the upper hose off of the radiator first, then separated it from the crossover pipe once the pipe was removed. Was easier that way, the upper rad hose has much more room and I think a spot for good leverage.

    Also, if you're going to the dealer for the pipe, grab new o-rings for the quick connect hoses. For $5 you'll kick yourself if you put those back on an they leak.
    13 SHO
    09 A6 Avant 3.0t
    96 FZJ80
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  5. #5
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    thanks BRock, those pliers did the trick on the first try! My needle nose must not have been long/grabby enough. Great way to spend 8 bucks.

    Now i just noticed that while replacing the pipe, the other (luckily there is only two..) coolant bleeder nipple has broken off at some point of my working on the front pipe. i guess the lesson here is if the front coolant pipe nipple breaks off, the other one is probably juts as brittle, so replace it.



    *facepalm*

    Also, does anyone here know if there was a clip of some sort on the temperature sensor? I Don't remember pulling one off but it looks like there should be one to hold it down.



    cheers
    Marko
    2007 A6 Avant 3.2L Black/Black, 235k miles

  6. #6
    Veteran Member Four Rings JPJ2007's Avatar
    Join Date
    Apr 15 2009
    AZ Member #
    41259
    Location
    Middle TN

    I'll try commenting again tommorow but I did the same thing. I took the oppertunity though ( At the time, It had 212k miles ) that I also had the water pump, tensioner, Serp Belt, thermostat and several other things replaced, If it had to come off and wasn't too pricey I went ahead and replaced it with a new one so I didn't have to mess with it before.

    You did the diy or not yet?
    2006 A6 3.2L Quattro S-Line (got my baby back)

  7. #7
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    which DIY? my plan for this car is to replace the stuff thats broken and not get too ahead of myself, the previous owner did a good job staying ahead of things, the serp belt looks very new anyway. I think anything i dig into has a chance of breaking since the plastic is so old, i am crossing fingers that pulling that radiator hose off the radiator didn't damage that.. those o-rings really seize on solid, had to pull with 50+ lbs of force for a while. I am right up with you there with the mileage though.
    2007 A6 Avant 3.2L Black/Black, 235k miles

  8. #8
    Senior Member Two Rings B. Rock's Avatar
    Join Date
    Jul 27 2008
    AZ Member #
    31331
    My Garage
    91 CQ
    Location
    Denver, CO

    There's supposed to be a jesus clip on that temp sensor, which looks like it's already been removed. That sensor also has an o-ring that likes to stick in place (and smart move is replacing it)
    13 SHO
    09 A6 Avant 3.0t
    96 FZJ80
    95 UrS6 (RS2'd)
    82 TDI Adventurewagen

  9. #9
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    i replaced the o-ring with the coolant pipe, got the memo on that part. now i need to find the part number for that clip on the temp sensor, i either lost it or it had disappeared from before.
    2007 A6 Avant 3.2L Black/Black, 235k miles

  10. #10
    Senior Member Four Rings Ford Prefect's Avatar
    Join Date
    Jan 20 2017
    AZ Member #
    391171
    My Garage
    2011 Silver S4, Mercedes Benz R350 ('07 & '11), Suzuki SV1000
    Location
    New Hampshire

    3.2L front coolant pipe

    Quote Originally Posted by estomax View Post
    i replaced the o-ring with the coolant pipe, got the memo on that part. now i need to find the part number for that clip on the temp sensor, i either lost it or it had disappeared from before.
    **mine is 3.0T but the pipe and nipple looked very similar**

    Did you replace it yet? I fixed mine the McGuiver way. She’s holding strong *knocks on wood*.

    I bought a brass hose splice and ground one side down until it was a tight press fit. Then heated up the pipe and slide it in. Did that in November and it’s still good.

    Probably not for everyone but I wasn’t pulling that stuff again.

    IMG_1620.jpg
    56349960959__E9636296-B3CF-4785-A2AB-1E37BA2027BD.jpg

    Sent from my iPhone using Audizine

  11. #11
    Senior Member Three Rings estomax's Avatar
    Join Date
    Jan 16 2009
    AZ Member #
    37513
    My Garage
    07 A6 Avant 3.2L, 13 Leaf, 08 Titan
    Location
    Seattle

    I was strongly considering drilling and tapping a threaded brass nipple like you put in, but if the rest of the pipe is pretty brittle too then I was too afraid to do that. Good solution and glad it works! I got it all replaced now, front coolant pipe, upper rad hose, cooling fans, cooling fan module and front snub mount. Did not need to do service position. so much for the cheap Audi lol. Also the insulation fell off wires at the plug to the left of upper radiator hose so I had to electrical tape wrap that up to avoid a short.

  12. #12
    Senior Member Four Rings Ford Prefect's Avatar
    Join Date
    Jan 20 2017
    AZ Member #
    391171
    My Garage
    2011 Silver S4, Mercedes Benz R350 ('07 & '11), Suzuki SV1000
    Location
    New Hampshire

    I definitely would’ve replaced the pipe had I not just put it all back together. Smart move on your part!


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