Mine has a transmission cooler as standard and its completely separate to the radiator - might be easier to look at replacement parts from the later models such as mine to then retrofit, although it might be simpler to get a thermostatic Mocal cooler.

__________________
UK spec Mercedes W210 E300 Turbodiesel wagon - OM606.962 with 722.6 transmission - rust free!

This exact event has caused many transmissions to fail in the early 2000's C class series.

__________________
92 e300d2.5t
01 e320
05 cdi
85 chev c10

Water to oil coolers are more efficient, and have the added advantage of being automatically thermostat controlled. I think a better plan would be to replace the radiator with a high capacity aluminum racing radiator with an integral transmission cooler.

not on my MB - but I put it on a mazda 6 that I recently bought, its plumbed after the radiator ATF cooler, before the additional cooler I was seeing transmission temps reach to 220F, now they are at 180F in the worst heat on the highway or city traffic without issues at all.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Put an external cooler o nit, and cap the factory one. You won't look back.

__________________
$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

Anyone have a recommendation on where to buy the MB trans cooler? Are they still available?

If they are not available, any recommendations on what to use? I see several options on ebay... Not sure which to purchase?

Thank You!

__________________
1987 300 TD - Kraut
1987 300 D - Hans

the tube and fin ones are the poorest in terms of cooling down, the best are the stacked plate design, get a 24000 gvw, you may need to rig up some bracketry to install it at the factory position which is in the bumper cavity.

the water to oil cooler in the radiator is very efficient - water will remove upto 5 times more heat than that of an air/oil cooler. Instead of relying fully on just the air unit - plumb it in series - the outlet of the radiator cooler should enter the air cooler and go back the transmission.

If you are going to fully rely on the air cooler then the fan and 100C switch is almost mandatory.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

If you are looking for an inexpensive alternative, many/most/all of the AT F-series Ford trucks since the 1980s have coolers mounted in front of the radiator. Easy to pull and usually inexpensive at salvage yards.

I have one mounted between the frame rails of my 56 Dodge/OM617 truck. So far, so good!

1956 Dodge Truck Build with OM617

Thermostats to bypass the cooler until the trans is warm are available.

Here is a pic of my cooler from a F-150. Larger ones are available on F-series models built with higher towing capacities.

Has anyone tried one of these from Derale? Any thoughts?

Series 10000 Stack Plate : 19 Row Series 10000 Stack Plate Transmission Cooler Kit

__________________
1987 300 TD - Kraut
1987 300 D - Hans

I guess I'm just cheap, but why pay $150-200 when you can get essentially the same stacked plate cooler off of a Ford truck for $15 at a salvage yard?

Yes! I am in Albuquerque, and I wanted all the cooling I can get for my 300D engine upgrades, so I relocated the battery & coolant overflow tank and used the old overflow tank mount flange to install a Ford truck type stacked plate cooler with its own fan and controller. The cooler, fan were U-Pull items. I also installed a chrome vent in the hood to direct airflow down over the trans cooler - works like a charm

I just saw that the OP posted... 3 years ago.

Silly me.. just have to restrain myself. Punk'd again

Need to start my own thread

LOL....

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

200 P.S.I. tested
Strong enough for you to "stand on."

__________________
'84 300SD sold
124.128