I've got a '95 E300D. It has a steel tranny cooler line which connects into the radiator on the back passenger side of the radiator, goes across the top of the rad, then down the driver's side back of the rad, makes a 90 and then there is a union to a flex hose.

There is a ton of corrosion on the last portion of the metal line before the union, and I'd like to replace this line before it starts to leak. Looking at the Electronic Parts Catalog on line, the only thing resembling this line I can find is A124 270 2896, (found on screen 12 of the tranny section) however the routing on the drawing does not match the real world, so I don't know if this is correct.

Have any of you 606 guys replaced this line?

Rgds,
Chris W.
'95 E300D, 251K

You should visit a dealer parts desk for this. I replaced both of those lines a few months ago, and there are many variants depending on what model of vehicle you have, and the age.

It took a good 10 minutes of studying the diagrams on the EPC and looking at what was on my car before we could order the correct part. There are lots of different versions of those lines.

Another thing you should be aware of is that each line ends at a banjo bolt on the side of the radiator. Both bolts are accessible (top one accessed by removing a small inspection hole next to the headlamp, bottom one accessed by dropping the oil cooler down and reaching through the towhook hole). There can be significant corrosion on the union between the banjo bolt and the radiator, that was the source of my leak.

http://forums.mercedesclub.org.uk/showthread.php?t=27902&highlight=leak&page=2