Originally Posted by Diseasel300

That is the latest part number for the Gen II 126. The OE supplier for Mercedes was Egelhof/ACM. Pretty much anything made after 1993 should be marked for R134a and be a silver colored body. The original R12 expansion valves were a gold color. I've used Egelhof/ACM valves on every German car I've done A/C on and never had an issue so you should be fine with them or MB.