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Can anyone ID this part W124 300D

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Old Jul 19, 2024 | 03:49 PM
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desertdiesel's Avatar
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1991 300D
Can anyone ID this part W124 300D

Finally found the source of my coolant leak. Drivers side, towards back of motor.


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Old Jul 19, 2024 | 04:36 PM
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'99 and '05 E55 AMG
Check the MB online parts catalog.

https://nemigaparts.com/cat_spares/epc/mercedes/1/

Could be part number 537 on this page. Be advised I just picked a 300D model at random (Version 124.903 with engine M 603.960).
https://nemigaparts.com/cat_spares/e...asis=124133576

Edit: If you cannot find the part available, any reputable machine shop can make you a new one. Will cost more, of course.

Last edited by bbirdwell; Jul 19, 2024 at 04:51 PM.
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Old Jul 20, 2024 | 05:13 AM
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1991 300D
Figured it out, part number is 601-203-01-36

it’s a fitting that goes to the block. What connects to it is the oil cooling system hardline pictured here.

i am still going to try my hand at recreating it in my shop. A dealer in New Jersey had one. Mercedes said that was the only one they had in the states but there were 1000 in Germany. One other site reported it in stock. $18 from Mercedes

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Old Jul 20, 2024 | 05:15 AM
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1991 300D
Originally Posted by bbirdwell
Check the MB online parts catalog.

https://nemigaparts.com/cat_spares/epc/mercedes/1/

Could be part number 537 on this page. Be advised I just picked a 300D model at random (Version 124.903 with engine M 603.960).
https://nemigaparts.com/cat_spares/e...asis=124133576

Edit: If you cannot find the part available, any reputable machine shop can make you a new one. Will cost more, of course.
that was it! Thank you a ton.


didn’t see your reply until now. Euro Parts West here in AZ figured it out for me around the time you replied. Mentioning them because they have a ton of oddball stuff available same day. They delivered the o-ring that goes on this for free.

Last edited by desertdiesel; Jul 20, 2024 at 05:18 AM. Reason: Replying to post
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