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C250 CDI Coolant Leak

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Old May 14, 2019 | 08:05 AM
  #1  
Padge's Avatar
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C250 CDI 2010
C250 CDI Coolant Leak

Afternoon all,

My first post and its a plea for help I'm afraid. My 2010 C250 Estate has a coolant leak that appeared from no where yesterday, after a big of digging around in the forums and on the car itself, I can say it is definitely not the water pump. After more digging around today, I found the leak on a pipe from across the top of the engine, that goes into the bulkhead which I assume for the heater system.
I've attached some pictures of where and what is leaking. I was wondering if anyone knows where i can get the part number from to order this bit. I've had a scout through google but to no avail at the moment.

Thanks in advance, Padge






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Old Apr 12, 2020 | 09:07 AM
  #2  
Adam Richards's Avatar
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W204 2.2
Originally Posted by Padge
Afternoon all,

My first post and its a plea for help I'm afraid. My 2010 C250 Estate has a coolant leak that appeared from no where yesterday, after a big of digging around in the forums and on the car itself, I can say it is definitely not the water pump. After more digging around today, I found the leak on a pipe from across the top of the engine, that goes into the bulkhead which I assume for the heater system.
I've attached some pictures of where and what is leaking. I was wondering if anyone knows where i can get the part number from to order this bit. I've had a scout through google but to no avail at the moment.

Thanks in advance, Padge





Hi don't know if you are still active, but I was wondering did you get this fix had mine is leaking from the same spot.
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Old Apr 12, 2020 | 09:49 AM
  #3  
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C250 CDI 2010
Yeah I got a fix mate. This is the part number on the invoice I got. It's a bit of a pain for access but easy enough to change yourself

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Old Apr 12, 2020 | 10:18 AM
  #4  
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W204 2.2
Thanks for the quick reply, did you change it yourself then? If so any pointers
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Old Apr 12, 2020 | 11:25 AM
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C250 CDI 2010
Yeah I did it myself. I think you just need pliers to get the clips off. The only major issue is access, but as long as your hand skills are OK you'll be fine. Aslo I'm quite short so had to pretty much lay across the engine 😂
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Old Sep 4, 2020 | 12:21 AM
  #6  
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S204 250 CDI
Originally Posted by Adam Richards
Hi don't know if you are still active, but I was wondering did you get this fix had mine is leaking from the same spot.
I have same issue.

In my car part numbers are:

a2048305996 (180)

a2048300196 (150)

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Old Dec 3, 2021 | 01:41 PM
  #7  
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Mb w212 e -class
Heating hose leak

Hi guys! I problem with leak in same spot too. Do you guys just replace the plastic "hose" or did you change rubber sealings in the female connections?
I havet a 2010 mb w212, e‐class
tanks/ mike
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Old Dec 6, 2021 | 03:34 AM
  #8  
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S204 C250 CDI Sport
Never the first or the last of coolant leaks with these OM651's as both the water pump and fuel filter housing coolant inlet outlet have been redesigned .





Last edited by Gazwould; Dec 6, 2021 at 03:37 AM.
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