For those who have retained the (beautiful) original wiper arms on either e3 or e9, the correct inserts from Trico can be found on Amazon at the link below. I formerly bought them over the counter at my local MB dealer but they are NLA from them. I checked with Jim at Mesa and though he didn't have them he referred me to a fellow e3'er who pointed me towards these. This is the 16' version and some arms may be of a different length. The locking tabs on the pair which I received yesterday are redesigned and an improvement over previous sets . They're period correct and do a great job when weather requires.
Cheers,
Jim
https://www.amazon.com/gp/product/B000CB3X88/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
Cheers,
Jim
https://www.amazon.com/gp/product/B000CB3X88/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1