Coolant Leak - Need Help IDing parts
#1
Coolant Leak - Need Help IDing parts
Regarding these 3 coolant lines. Does anyone know the part numbers for them? One circled in GREEN is leaking for me.
These are the parts for an SL550. Not sure it will fit my 2012 S550.
278-200-09-00 coolant line
278-200-02-00 coolant line
157-200-01-51 coolant line
027-997-06-45 o-ring
Thanks!
Thank you!
These are the parts for an SL550. Not sure it will fit my 2012 S550.
278-200-09-00 coolant line
278-200-02-00 coolant line
157-200-01-51 coolant line
027-997-06-45 o-ring
Thanks!
![](https://cimg9.ibsrv.net/gimg/www.mbworld.org-vbulletin/1297x973/parts_fc348be2dacb3edad30d8038f9fc12a197396073.jpeg)
Thank you!
#2
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Join Date: Jul 2003
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EPC shows 2782000900 is the same, 0279970645 is correct (replaces 0239974445) see attachment for remaining parts .
![](https://cimg7.ibsrv.net/gimg/www.mbworld.org-vbulletin/1202x454/capture_502bdd4fc1a5fcd231ad769efc78943e82b64058.jpg)
Last edited by konigstiger; 02-22-2022 at 09:05 AM.
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Typer599 (03-04-2022)
#4
Do you have the diagram/parts for these 3 tubes. They "T" together up top between the intakes.. roughly shown where they are in the image ***EDIT*** Found it. https://www.benzworld.org/threads/20...leaks.3084318/ A 278 203 04 17 - Vent line to timing case and charge air cooler
Also now I need the tube circled in PURPLE. I think it's the right side coolant feed line.. If you can share that diagram and part number that would help me a ton! Thank you again!
![](https://cimg4.ibsrv.net/gimg/www.mbworld.org-vbulletin/1500x2000/img_5391_7de8477a67a453b1ee140bb423ab1ea77cf8f9bb.jpg)
![](https://cimg1.ibsrv.net/gimg/www.mbworld.org-vbulletin/1297x973/parts_380d347e7c10a18f39c849070963497cdbd5ba42.jpeg)
Also now I need the tube circled in PURPLE. I think it's the right side coolant feed line.. If you can share that diagram and part number that would help me a ton! Thank you again!
Last edited by Typer599; 03-03-2022 at 07:51 PM.
#5
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VIN?
#6
WDDNG7DB2CA425732
actually I need this coolant line
Circled in red, coming out of water pump leading into turbo
huge huge thanks!
![](https://cimg6.ibsrv.net/gimg/www.mbworld.org-vbulletin/442x332/dd9f2fc1_f51f_4338_bbcc_de45f22bec8c_1d8eeb381516c9d925e8b954815da1d2f0299f3b.jpeg)
actually I need this coolant line
Circled in red, coming out of water pump leading into turbo
huge huge thanks!
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#8
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Attached corresponding VIN specific part lists to diagrams. First diagram A turbocharger water circuit, second B charge air cooler water circuit.
![](https://cimg3.ibsrv.net/gimg/www.mbworld.org-vbulletin/797x584/capture_a_1d9f2bfaf256337461dd23f6b279c368f33ef225.jpg)
![](https://cimg5.ibsrv.net/gimg/www.mbworld.org-vbulletin/796x563/capture_b_54901a57dc42582154e48825621cf5e0ce319d94.jpg)
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Typer599 (03-04-2022)
#9
I don't care if we're not mean't to be together, but will you marry me? ![tyson](https://mbworld.org/forums/images/smilies/boxing.gif)
Thank you for taking the time to help me with this! You've single handedly put an end of hours of google searching.
![tyson](https://mbworld.org/forums/images/smilies/boxing.gif)
Thank you for taking the time to help me with this! You've single handedly put an end of hours of google searching.
#10
Wow 3-6 months back order from Germany for
278 203 04 17
Many dealers online shows available but once they actually look it up, it’s no where in the country.
anyone know any parts retailers that might? US ideally
278 203 04 17
Many dealers online shows available but once they actually look it up, it’s no where in the country.
anyone know any parts retailers that might? US ideally