Hello All. Anyone know what this part is called, its part number, where to get it, etc? 1991 300E. Thanks!

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2012 E350
2006 Callaway SC560

Got it. 124 820 08 12
Partition

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2012 E350
2006 Callaway SC560

If you still have it open and accessible, can you please let me know where the hose in your pic is connecting to on both ends?

When Changing positive cable on my w124, I accidently(It was very brittle with age) broke plastic hose and Now I can't find it where it's other end is connecting to because it is disappearing in firewall.
Check my below pics.

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1) '04 S500 Gold/Beige......120k Miles
2) '93 300E 2.8...Green/Tan MBTex..........202k Miles(and going)
3) '89 420SEL...Light Blue/gray Leather....155k Miles (Retired )