Uprated Engine Oil cooler w211 e55k

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merc85

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Well yep you guessed it, My Engine Oil cooler is leaking.. Deep Joy,

Part Number i believe is 2115000400 made by Behr i think

This is a different unit it would seem to the w220, and r230 55k's, they are very similar but have a electrical switch/sensor off the side of them.

Hella number 8MO 376 725-271 Union size just found out, inlet and outlet m22 1.5

Has anyone ever uprated there engine oil cooler, Its the one behind the Osf wheel arch btw.

If so where did you get your replacement??
 
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mine leaked 3 months after buying the car, luckily it was still under warranty so most of it was covered by MB apart from a pipe that was corroded !
 
Nice to know im not the only sucker to have suffered this :( doh......

Looking at a Universal one, seem to be around the £100 mark.

I can get the s55k r230 units from Hella at £134 + vat, I may go this route and just not use the sensor.
 
Nice to know im not the only sucker to have suffered this :( doh......

Looking at a Universal one, seem to be around the £100 mark.

I can get the s55k r230 units from Hella at £134 + vat, I may go this route and just not use the sensor.

If it's for the same engine I don't see why not?
 
Nice to know im not the only sucker to have suffered this :( doh......

Looking at a Universal one, seem to be around the £100 mark.

I can get the s55k r230 units from Hella at £134 + vat, I may go this route and just not use the sensor.

Hi merc85...

I have a CLS55 with a leaky Oil Cooler...you mentioned a Universal Cooler for 100 pounds? Can you give any details on that? Will it have the same size threads as the original?

Thanks for your help in advance!
 
Hi Najam,

I replaced my leaking cooler on my w211 e55k with a new Hella unit from a w220/r230, the difference being they have a oil temp sensor in the side so you have to adapt the bracket it sits in sligtly.

Its very easy to do and pretty much direct fit. I will grab the Part number tomorrow and update this thread.
 
Hi Najam,

I replaced my leaking cooler on my w211 e55k with a new Hella unit from a w220/r230, the difference being they have a oil temp sensor in the side so you have to adapt the bracket it sits in sligtly.

Its very easy to do and pretty much direct fit. I will grab the Part number tomorrow and update this thread.
Hi Najam,

I replaced my leaking cooler on my w211 e55k with a new Hella unit from a w220/r230, the difference being they have a oil temp sensor in the side so you have to adapt the bracket it sits in sligtly.

Its very easy to do and pretty much direct fit. I will grab the Part number tomorrow and update this thread.

Hey merc85,

I’ll go one better and do it for you!

Hella Behr Oil Cooler
Part No: 8MO 376 725-271
Mercedes OE Number: A1405000400

Just bought the part now!

Thanks!
 
Hey sorry for the late reply ive been at GOSH with my son,

Thats great news glad i could help. :)

The Engine oil cooler hoses do corrode onto the unit so you may need those aswell. If you do they are dealer only Roughly £360 i think.
 
Hey merc85...hope you’re doing well!

Can you give me the details of the slight adjustment to the cooler? I bought the part and am wondering what I have to do!

Do I use a drill to remove the rivets on the old coolers so I can reuse the plastic piece (where the fan is fastened) on the new cooler.

Can I use pop rivers to refit the plastic on the new cooler?

Does that make sense?
 
Hey merc85...just want to add to my message...I don’t think I’m being clear....let me add to my previous note!

I am asking about the attachments in the new cooler shown in the picture below (pointing at it with my finger). How do I remove these without damaging the cooler? I want them removed because that’s how I can reinstall the plastic piece (shown in picture) to the cooler so that the fan can be fastened to it!

Hope this makes sense!
 

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Hi peeps , just seen this thread again, I kept all those attachment points and screwed the plastic Cowling using m8 bolts.

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Thanks merc85...just bolted the cowel on the same way. It’s on solid and fits the surface area of the cooler well!

Now gotta put everything back together again!

One more oil leak to deal with after this adventure and also change the transmission fluid.
 
Hey Merc85....I’m about to change my transmission fluid but am caught between using Mercedes’ own brand of transmission fluid or use Pentosin ATF 134. I checked on Bevo and Pentosin ATF 134 is in the 236.14 list of approved Transmission fluid.

Just want a second opinion....would you recommend using after market transmission fluid or stick with Merc’s own brand?

Thanks in advance for your help again!
 
My last change was done at MB using Mb Fluid,

With my Previous e55k i did indeed use another Brand which was a Fully Synthetic variant of ATF, What you must not use is Dexron 111, this is Semi and is not upto the Job.
 
Just want a second opinion....would you recommend using after market transmission fluid or stick with Merc’s own brand?

FUCHS is normally factory fill IIRC, see how much that costs
 
I would also have a chat with opie oils as mb oil will be a oil that's been re packaged for them.
 
I would also have a chat with opie oils as mb oil will be a oil that's been re packaged for them.

He’s in Canada, shipping might be expensive :D
 

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