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Part number for broken plastic coolant connector

Old Jan 20, 2023 | 12:34 AM
  #1  
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Past: 300zx TT 500hp Current: '12 C63
Part number for broken plastic coolant connector

While doing my cam adjusters I accidentally broke off a plastic connector that joins the small coolant hose from the coolant reservoir to the front of the water pump.
Anybody know what this black plastic piece is called/part number for it?
Thanks!



The connector attached to the coolant host

Close up of connector


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Old Jan 20, 2023 | 12:49 AM
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Past: 300zx TT 500hp Current: '12 C63
Found it:
Part number 156-203-04-75

Gotta buy the whole thermostat housing. The housing comes with the little plastic piece attached. Its a delicate POS, I gotta be more careful
https://classicparts.mbusa.com/oem-p...kit-1562030475
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Old Jan 20, 2023 | 03:20 AM
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I had this on mine, if you don't want to buy a whole housing. I just removed the housing, drilled out the remaining plastic from the whole, tapped a thread into the hole and screwed in a 90 degree brass hose connector with a bit of blue sealer on the threads, then just put the pipe back on worked a treat and this is prone to snap being plastic when the belt goes so its a bit of a upgrade also
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Old Jan 20, 2023 | 04:43 AM
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Sh*ty plastics
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Old Jan 20, 2023 | 08:41 AM
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I mean, is there a good reason to even keep using that stupid thing? I don’t think there’s any sort of valve in there. I wonder if going forward you’d be better off just tapping the thermostat housing and threading a brass barb fitting in there, use a small worm gear clamp to secure the hose, and call it good forever?
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Old Jan 20, 2023 | 04:16 PM
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2012 C63, GL63, 1989 300CE
Originally Posted by BLKROKT
I mean, is there a good reason to even keep using that stupid thing? I don’t think there’s any sort of valve in there. I wonder if going forward you’d be better off just tapping the thermostat housing and threading a brass barb fitting in there, use a small worm gear clamp to secure the hose, and call it good forever?
It isn’t really useful once the system has been bled after a flush. It’s an m12x1.5 IIRC. You can open it and do a manual bleed. People will say it’s inconvenient.
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