[s-cars] Water leak - rubber hose under inlet manifold

[J. Khang]

Paul Heneghan wrote:

> 1. Can I replace this with standard hosepipe, or do
> I have to buy the Audi part?  The part number
> stamped on the pipe appears to be 034 121 471 AP,
> but I'm having difficulty finding it in ETKA.  I
> think it's item 27 on illustration 145-25 (AAN
> turbocharger/wastegate) called 'shorten  to 160mm'.
> The item above has no number, just a hyphen and is
> called N 020 262 1, 'hose in coils of 5m' 10x3.5.

Paul,

I tried to get that part from my local Audi dealer and
could not then tried to get a short length cut off
from N 020 262 1 and could not.

I ended up replacing it with 3/8" fuel hose and it's
been fine. If you can, use a 10mm hose as 3/8" (9.5mm)
is just slightly too small and very difficult to get
onto the pipes. I struggled for a long time with it.

You might also find that there is rust in the system
and it will need flushing so get some G12+ coolant. In
my case, the rust particles had been stopped at the #5
cylinder end of the hose and forced their way through
the wall of the hose, puncturing it.

> 2. Is this a sign, that at 123K miles all my water
> hosepipes are on the way out?

All the other pipes have still held fine so far at
146k miles.

Jonathan


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