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Old 11-07-2016, 01:55 AM
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Join Date: Nov 2016
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M104.992/E320 - Help ID part - coolant line from WP to head

I am in the middle of replacing my timing chain cover gasket and in need of some assistance. I am trying to identify the name of the part with the red arrow in the photo below. It attaches to the timing chain cover and has a coolant line that runs over to the water pump. I have searched multiple forums and so far I haven't been able to find what I'm looking for.

This part should be held in place with two bolts but both were missing on my car, the o-ring was the only thing holding it in place, very surprised it wasn't leaking from here. I think if I can find the name of this part I can do some more searching and replace the o-ring & bolts for reassembly.

Thank you in advance.
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Old 11-07-2016, 04:50 AM
oldsinner111's Avatar
a parent should die first
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,087
I would just find some metric bolts at a hardware store,and use prema gasket maker.
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Old 11-07-2016, 05:35 AM
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Join Date: Aug 2006
Posts: 684
They call that part an outlet (104 203 04 31). Seal ring is 017 997 23 48 and the bolts are 910143 008012.
There is also a seal ring 017 997 21 48 that goes between the head and the front cover for coolant.
The outlet bolts should also hold an engine lifting bracket (suspension eye) 104 223 14 41. If not installing it you will need 2 M8 washers for the bolts.
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Old 11-07-2016, 10:03 AM
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Join Date: Nov 2016
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Wow Rick76,very helpful. What is your resource for the little parts? These searches seem to eat up so much time.

Thank you!
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Old 11-08-2016, 04:43 AM
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Join Date: Aug 2006
Posts: 684
Those are long bolts that hold the outlet to the front cover and through to the head. They are 100mm M8's. They might be updated to ones with an E12 external torx head opposed to the original Allen.
I have the electronic parts catalogue (EPC) on one of my computers and also the old microfiche, although I haven't used them for years.
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