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SL/R107: I need cylinder head help

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Old 11-10-2017, 10:49 AM
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1974 450SL
I need cylinder head help
74 sl. Doing head gaskets. Corrosion/calcification in cylinder head water passages is BAD. As I'm cleaning I notice something loose. There are some type of water restrictor plugs pressed into the head. Pics show one completely gone, one partially gone, and one "ok". They are easy enough to remove, but what are they called and WHERE CAN I BUY REPLACEMENTS? I've been searching with no luck at all.

This one is gone


This one is partial but still bad


This one is "good". See the restriction hole?
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Old 11-10-2017, 05:30 PM
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1999 E300TD
I'd start googling antique german car forums!
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Old 11-13-2017, 08:09 AM
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1974 450SL
https://www.ecstuning.com/b-genuine-...ri/1270160360/

Friend found this on another site. It is the correct replacement for what I need. Basically a $33 dollar thimble with a hole in the side. I made my own.

Just for reference.
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Old 11-13-2017, 02:04 PM
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He also showed another site for $27.00. https://www.oediscountparts.com/part...&siteid=215242

I read that thread on BenzWorld.
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