I'm still using the originals but I think one has now gone bad based on recent rough idle when first started.
I don't see a name on them. Do you need to pull one to identify?
I'd like the same quality but that's unlikely.

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/showthread.php?t=296386