Coolant Leak
Thread Starter
Senior Member
Joined: Oct 2018
Posts: 255
Likes: 77
From: New Jersey
GL 450
Coolant Leak
I have a coolant leak that I thought i chased to a metal and rubber junction at the bottom of the car, I should have taken a picture. There is a metal tube that runs the width of the radiator connects to a rubber hose via metal compression fitting. I pressurized the system, saw a slow drip there and installed a traditional hose clamp which stopped that leak. I am still losing coolant somewhere, likely the other side of that hose, the trouble is I cannot seem to find the other end of it.
There are no images in the online catalogs for the part, which I may just end up replacing, but does anyone know what I am talking about? Any help is appreciated on finding the part number, or other other junctions within the hose.
There are no images in the online catalogs for the part, which I may just end up replacing, but does anyone know what I am talking about? Any help is appreciated on finding the part number, or other other junctions within the hose.
Out Of Control!!
Joined: Sep 2018
Posts: 14,678
Likes: 4,578
From: unbegrenzt
2017 GLE350 4MATIC
I have a coolant leak that I thought i chased to a metal and rubber junction at the bottom of the car, I should have taken a picture. There is a metal tube that runs the width of the radiator connects to a rubber hose via metal compression fitting. I pressurized the system, saw a slow drip there and installed a traditional hose clamp which stopped that leak. I am still losing coolant somewhere, likely the other side of that hose, the trouble is I cannot seem to find the other end of it.
There are no images in the online catalogs for the part, which I may just end up replacing, but does anyone know what I am talking about? Any help is appreciated on finding the part number, or other other junctions within the hose.
There are no images in the online catalogs for the part, which I may just end up replacing, but does anyone know what I am talking about? Any help is appreciated on finding the part number, or other other junctions within the hose.
Is it A1668307101? https://www.ebay.com/itm/352677615163
It sounds like the metal and rubber tube assembly running from circulation pump behind the left headlamp, across the front/bottom of the engine and back into the lower radiator hose at a t-junction. Sound about right?
Try searching mbparts.mbusa.com
Last edited by chassis; Aug 25, 2021 at 11:42 AM.
Senior Member
Joined: Jul 2007
Posts: 283
Likes: 102
From: Maryland
S 550, S65 Coupe
I had a leak on the same hose at the same place. I fixed it with an extra hose clamp just past the factory crimped on clamp. I see you already did that so probably time for a new hose. You can get good access to it if you remove the front half of the wheels well liners. It will be right in front of you then and easy to work on.
