Took my car to a shop to get some issues diagnosed. I was told I need a new oil cooler as the one I have is leaking oil into the coolant. I cannot find this part anywhere and was wondering if anyone had any leads or a diagram. The shop wants 970 bucks. Thanks.

 

ebay :
http://www.ebay.com/itm/Mercedes-Benz-C280-ML500-ML55-R500-S430-Engine-Oil-Cooler-Oil-Filter-Housing-/111379865192?hash=item19eec1de68
carid :
URO Parts® 1121880401 - Mercedes SLK320 2004 Engine Oil Cooler

 

Thank you sir. I'm really not sure why I couldn't find the part as I searched slk320 oil cooler. Your google fu is stronger than mine I suppose.

 

Try SLK 32 AMG for your search.

 

I do not think they are on the SLK320 only the SLK32.

 

Glad you're looking into doing it yourself. The $120. or so in parts for this repair means they were looking to get $850. for a couple hours worth of work. Unfortunately they often get away with this type of gouging.

 

Being the total cynic when it comes to dealing with what I am told at shops and dealers, I have to ask is what they say true? What indication do you have that there is a leak at all. I think this would be a first here in all of the last 11 years.

 

I do not think that is the correct part on ebay


SLK32 is calling for a different part number, it lists at $635


I can do 530 shipped on it for you new, or I have a used good one here if you are interested in that?


if you just need the oring seals between the oil cooler and oil filter housing we can get those for 30 shipped


once resolved do a full coolant and oil change

 

You probably correct Rob. Reading the eBay compatibility chart in the add, they have all the AMG models listed as "naturally aspirated".

 

As there is a gasket involved here I would first look at it to see if it has broken. Much cheaper and without taking it apart how could they say where it is leaking? I cannot see you wanting the oil filter housing anyway, just the gasket and maybe the aluminum cooling housing.
The cooling housing is Mercedes #112 180 00 85 on my SRT6, and Behr #87938.
The numbers you want are on each part but I cannot see what the filter housing number is.

 

Thanks for the help. Yeah I was curious how the entire thing needed to be replaced when its a chunk of aluminum. Im going to pick up the car today but I figure I can get by with just replacing the two gaskets. The issue is oil being found in my coolant and no documented evidence of a head gasket going bad on these cars. The mechanic said its a known issue with these particular coolers.

 

Emailing you now.

 

Update

Got the oil cooler off. It was a pain in the butt as I dont own a 46mm socket to get the filter housing off.

I realized when I got the cooler off that the coolant and oil both enter the cooler... duh. For some reason I thought it was pumping coolant into the cooler and cooling the oil that was inside the filter housing. Also of note, the gaskets were completely fine. Both were set in tight with no noticeable signs of wear. These gaskets would not affect anything besides oil leaking to the outside of the engine anyways.
When I took the cooler off I dumped it out in a bucket. While doing so I saw what seemed to be fairly fresh oil come out of the coolant side, leading me to believe this in fact my problem as told by the mechanic.

 

Fairly fresh oil?
Generally when oil and water mix in an engine they emulsify and you get what looks like a chocolate milkshake.

 

The reason I assumed it was fresh is it was still dark brown. It didnt have time to turn into that fatty looking crud.

 

FYI got everything installed a while ago. Would've been much easier if I was able to find a socket that fit inside the oil filter housing (33 or 34mm). All is well now. Thanks for everyone's help.

 

What did you replace in the end please?

 

Just the oil cooler. Rob sent me a used one. Got a fresh oil change and new coolant and the crud that plagued me for so long is gone.

 

Good news.