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My '14 S-Class developed a coolant leak at the expansion tank return hose (pictured). Part # 222--501-50-25. Apparently on backorder from Mercedes (thanks, Putin!)
A-222-501-50-25 A-222-501-50-25
Does anyone has a car they are or know of that is parting-out (breaking) that I might be able to find a good, used replacement in the interim. I found a Chinese replacement hose but shipping takes 3-weeks.
Try Mercedes Benz of Owings MIlls. They usually stock the frequently replaced hoses like these. I broke mine a few months ago and they had it in stock when i called. Try them, hopefully they will have one.
I had the same issue last month, i luckily got the last one available in Canada from what the dealership told me
You could try auto wrecker salvage yards
If this is the same as the 2015.
This plastic pipe goes to a regular hose on the engine side. You can see the hose part sticking out of the engine, So that part you can just run a small coolant hose.
Get a few feet of hose, same diameter as the one in the engine. Bigger, smaller, mix and match. Hose is cheap.
Mine broke too. They all break eventually. If you look at them too hard they will break, and while waiting for the part I ran a regular coolant hose from the engine, cut the plastic hose and fitted the coolant hose over the plastic pipe with clamps. Drove like that for thousand miles at least.
Yours is tricky, as you have to run the hose all the way to the coolant reservoir and then find a way to connect it, but I am sure you can cut something to fit the hose over it.
The little nipple pipe on the engine will also probably break if you mess with it. The part number on mine was 009-997-29-72
Last edited by waterzap99; Oct 20, 2023 at 08:53 AM.
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