Infamous C63 Idler Pulley Grenade
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E55 AMG
Infamous C63 Idler Pulley Grenade
So, my idler pulley closest to the top of the engine gave out and it also happened to take out a hard plastic clip that feeds coolant to the engine from the vent hose. This part sits directly on top of the idler pulley. This clip is actually inserted into the engine. If you look at the diagram, it's a black clip that the hose is inserted to the hose farthest to the right. Below is the information for reference:VENT HOSE - MERCEDES-BENZ (204-500-03-72)
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
Last edited by Syntaxerror; Oct 25, 2017 at 11:15 PM.
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E55 AMG
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E55 AMG
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MBWorld Fanatic!
Joined: Sep 2009
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From: Houston, TX
2014 E63 AMGs, 2015 F-150 Lariat, 2010 Porsche C4S
So, my idler pulley closest to the top of the engine gave out and it also happened to take out a hard plastic clip that feeds coolant to the engine from the vent hose. This part sits directly on top of the idler pulley. This clip is actually inserted into the engine. If you look at the diagram, it's a black clip that the hose is inserted to the hose farthest to the right. Below is the information for reference:VENT HOSE - MERCEDES-BENZ (204-500-03-72)
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
MBWorld Fanatic!
Joined: Jun 2008
Posts: 8,074
Likes: 2,867
From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Sorry to hear OP. #45 was also the worst condition one when I recently replaced mine with the Weistec billet idlers. Good preventative maintenance to replace every few years or with the Weistec upgrades, because they give no warning.
MBWorld Fanatic!
Joined: Sep 2009
Posts: 2,824
Likes: 399
From: Houston, TX
2014 E63 AMGs, 2015 F-150 Lariat, 2010 Porsche C4S
So, my idler pulley closest to the top of the engine gave out and it also happened to take out a hard plastic clip that feeds coolant to the engine from the vent hose. This part sits directly on top of the idler pulley. This clip is actually inserted into the engine. If you look at the diagram, it's a black clip that the hose is inserted to the hose farthest to the right. Below is the information for reference:VENT HOSE - MERCEDES-BENZ (204-500-03-72)
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
I tried looking for a part number, but can't find one. Can anyone tell me the part name at least so I can start digging around? Thanks!
Thread Starter
Junior Member
Joined: Aug 2014
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E55 AMG
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Joined: Dec 2015
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From: Phoenix, AZ
2012 C63 with P30, LSD, and EES Supercharger, 1959 Plymouth with Viper V10 and Tremec 6sp
Thanks
Jim
MBWorld Fanatic!
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From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
I checked my idlers last year at 29K miles on my bone stock 2012 and both idlers #45 and 65 had rough bearings so I replaced them all with stock ones because I hadn't heard of the billet option (hadn't found this site yet.) Do the billet idlers actually have better bearings or just look better than the MB plastic ones? It is great that this site can help us folks who are wrench turners but don't have deep knowledge on the C63. If we can avoid having failures that not only strand us by the side of the road but also damage other parts of the car it is well worth the effort!
Thanks
Jim
Thanks
Jim
