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78/82 300D
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5,201 Posts
Discussion Starter · #1 ·
Wondering if anyone had replace the 8mm clutch reservoir hose? This is the one that runs from the brake reservoir to the clutch master.

I noticed mine sweating last winter and I am thinking of replacing it before this winter. I know I can get bulk hose for it but I noticed an odd replacement from mercedes part 0039971252



I wonder if this just locks onto the nipple from the reservoir and the clutch master? Its hard to tell what the connectors are. Don't know if any mods need to be done...It says direct replacement though...

Curious if anyone ever ordered one??
 

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1982 300D
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733 Posts
Its just a plain 8mm hose. That is a picture for something else.
 

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1973 416 Doka, 1978 416 Doka, 1980 416 Doka..... Help me, I can't stop buying them!!!
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2,711 Posts
I believe brake and clutch hose is 7mm and a special rubber that is not affected by the brake fluid. It is usually blue in color to tell it apart from regular fuel or oil hose. The color fades to a off white/gray with age.
 

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78/82 300D
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5,201 Posts
Discussion Starter · #4 ·
Take a look here...

Mercedes-Benz Teilekatalog (Ersatzteile online)

That is the EPC and it shows the above part/photo as a replacement for the original hose...odd??

I've read 7mm hose will work, but its a tight fit....Looking up the little plastic elbow on the clutch master says its 8mm...hints my thought an 8mm bulk hose(rated) would work...
 

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2008 GL320 CDI 2008 ML320 CDI 1984 Euro W123 300D
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161 Posts
I just replaced the clutch master cylinder and The hose pictured is exactly what is in my car, thanks for posting the part number I'll be ordering one just because the one in my car is original and 34 years old. Thanks cooljay.

Dan
 

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2008 GL320 CDI 2008 ML320 CDI 1984 Euro W123 300D
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161 Posts
Wondering if anyone had replace the 8mm clutch reservoir hose? This is the one that runs from the brake reservoir to the clutch master.

I noticed mine sweating last winter and I am thinking of replacing it before this winter. I know I can get bulk hose for it but I noticed an odd replacement from mercedes part 0039971252



I wonder if this just locks onto the nipple from the reservoir and the clutch master? Its hard to tell what the connectors are. Don't know if any mods need to be done...It says direct replacement though...

Curious if anyone ever ordered one??
Yes it just slips onto both the nipple that is attached to the clutch master cylinder and the nipple for the brake/clutch master cylinder, the bell ends of the hose had what looked like a rubber insret that sealed around the nipples. The new master cylinder I installed had a slightly different nipple than the original so I swapped them. Hope this helps.

Dan
 

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1984 Euro 300d four speed
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440 Posts
Hey cooljjay, or anyone else in this thread did we ever get to the bottom of this? Does the picture you posted work with our clutch systems? It seems that they might have changed the design? I called the dealership today and they weren't 100% sure either but I ordered the part anyways (the one you posted a picture of here.) Did anyone ever try this hose?
 
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