C63 AMG (W204) 2008 - 2015
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Transmission cooler lines

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Old 03-18-2019, 04:27 PM
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09 C63 AMG
Transmission cooler lines

Hi guys... noticed some oil down in the under tray after its first outing of the season yesterday, pulled the trays off and seems the tranny cooler line is leaking? Lowest passenger side... any input guys aftermarket parts etc...
Old 03-19-2019, 09:22 AM
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1999 E300TD
They are cheap at any dealer,however the labor is what we like, high!
Old 03-19-2019, 01:05 PM
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09 C63 AMG
Yes that's forsure. However the line itself looks in great condition overall!! Is there a O ring that can be replaced??
Old 03-19-2019, 05:21 PM
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1999 E300TD
Nope and look where its leaking
Old 03-22-2019, 05:38 PM
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09 C63 AMG
Had my indy shop fix the cooler line! Turns out the O ring was all it needed... we are thinking when the sepintine belt blew some shrapnel must have slightly pulled on the line causing the leak... also did a full tranny service, flushed the brakes because I put new rotors and pads over the winter...
Old 04-20-2023, 02:38 PM
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Viper 1994, ZR-1 1991 and RX-7 1993
Hi,

I've got the same exact leak. How do I disconnect that line? Do I have to unscrew the bolt (it seems to be a PITA).
Old 04-23-2023, 04:18 AM
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10 C six trizzle
it's held in with a c-clip.
Old 04-25-2023, 01:46 AM
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W204 C200, BMW E30 M3, 1980Gt Mini, Toyota Corona, KTM 200 EXC.
I had same looking black fluid leaking on the R/H side, turned out to be fluid leaked out from inside of the suspension drag link bush.

The fluid from inside of the bush had a similar consistency of black water which can come from an exhaust pipe.

New bush/arm fixed the problem.

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