I'm changing my original W124 headlights to Euro lights. I need to see what type of a wrench could get into the area to take out the 8mm screw out near the radiator fan shown here as figure 18.

https://www.pelicanparts.com/techarticles/Mercedes-W124/20-ELEC-Headlight_Assembly_and_Bulb_Replacement/20-ELEC-Headlight_Assembly_and_Bulb_Replacement.htm


The author of that article says "use care", but what I need is a proper tool to get that off without having to take the radiator fan assembly off.

1991 300d, 222k