W124 axle boot part numbers
 

Are the inner and outer axle boots the same? On some brands it’ll list inner or outer but can’t find the info for the Mercedes part numbers.

inside boot kit: 2103500537 (comes with everything)
outer boot: 2023570191 (which might come with clamps/grase)
outer clamps: 2029970390, 2109970690 (if needed)

axle boot
 

Inner and outer are different, I used a type from Italy that allows you to change it on the car , attaches like a clamshell . then use a special glue, put it on 3 yrs ago still dry no leaks It seemed loose they only make like 3 sizes, measure the circumference and order from e bay motors, my car is a 94 wagon

If you take time to disassemble the axle you can install rockford branded boots and heavy oetiker clamps,

That will truly be a fit and forget type option as they are made of santoprene.

For quick repairs, astro stretch boots work fantastic too, I personally never have had success with the clamshell boots.