Coolant leak - part identification time!

Silverpig

Member
I’ve identified the source of the coolant leak from my TDi, but I’m not sure what this part is called or even the part number. I’d like to have an idea what it is and where I can source it before I start dismantling, can anyone help please?

Thanks!
 

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It could be worth checking the hose connected on the right side of the flange.My hose developed a blister and perforated due to a diesel leak.if your pump has a leak it will attack those hoses and you won't necessarily notice until you get a leak.i think the hose is about £30.i would check for a diesel leak to prevent it from happening again
 
Your engine looks like a 2004-> ATL, so see this link:
https://nemigaparts.com/cat_spares/etka/audi/a2/248/121390/
Your highlight is of part 15 (hose - 8Z0 121 058 C ) and 31 (clamp - N 906 871 01) but be aware that housing is plastic (17) and has two flimsy screws (19,20) and an o-ring (18). Equally any water found there could also be due to the return feed to the coolant reservoir (hose 14 and clamp 27) - ignore that the diagram isn't geometrically correct - it's the pipe coming out of the right side of the block just above the EGR return pipe you've highlighted, or as others have said the coolant temp sensor (5 and 21)

I've included a photo of the rear of my ATL showing the open ends you'll need to access. It's not an easy job due to the access for the other end of that hose - you'll likely need hazet hose clamp pliers to remove the hose with the engine in situ.
https://www.amazon.co.uk/Hazet-192-Hose-Clamp-Pliers/dp/B004H4ECYK/ref=sr_1_16

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Your engine looks like a 2004-> ATL, so see this link:
https://nemigaparts.com/cat_spares/etka/audi/a2/248/121390/
Your highlight is of part 15 (hose - 8Z0 121 058 C ) and 31 (clamp - N 906 871 01) but be aware that housing is plastic (17) and has two flimsy screws (19,20) and an o-ring (18). Equally any water found there could also be due to the return feed to the coolant reservoir (hose 14 and clamp 27) - ignore that the diagram isn't geometrically correct - it's the pipe coming out of the right side of the block just above the EGR return pipe you've highlighted, or as others have said the coolant temp sensor (5 and 21)

I've included a photo of the rear of my ATL showing the open ends you'll need to access. It's not an easy job due to the access for the other end of that hose - you'll likely need hazet hose clamp pliers to remove the hose with the engine in situ.
https://www.amazon.co.uk/Hazet-192-Hose-Clamp-Pliers/dp/B004H4ECYK/ref=sr_1_16

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Hi,

Thanks so much for the advice. The car is a 2001 AMF but I see the point you’re trying to make, it looks like a right pig of a job to remove the pipe work. I’m guessing it’s the diesel pump right above it, removing that might make things easier but that could be a Pandora’s box all of its own.
 
Thanks one and all for your useful pointers, once it’s stopped raining I’ll have another look at it, but for now it’s parked up in disgrace.
 
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