I used the below Russian EPC site to look up the Crush Washers for my 84 300D and I got the Mercedes number from that. A 000 074 17 59 usually when you search with the Mercedes number the A is dropped and you can take out the spaces out 0000741759. That lead me to a site that had the Bosch number bosch 1410105020
When I looked up W123.130 USA the part number was the same MB A 000 074 17 59
Look in the Engine USA Section
https://nemigaparts.com/cat_spares/epc/mercedes/
This place showed them in stock under the Bosch number but I don't know if it is a US parts place.
https://alleuro.com/Parts/Bosch/0000741759