Quote:
Originally Posted by Diseasel300
Shell out for the OE cartridge, the MTC aftermarket ones are known to have weak springs and block coolant flow when there should be heat.
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Is the OE cartridge still available? Google only comes up with the MTC repair kit. But apparently, a BMW inset fits into the W126 as well:
https://www.benzworld.org/threads/monovalve-mtc-bosch-or-bmw.2507129/
I think I will take the risk and purchase this one.