What is the part number for the dipstick for a 1998 Mercedes E300TD?
I know this has been a while but did you find the part number.
I believe you have the 5 speed transmission in which case you will need 722.6 Transmission Dipstick
Typical part numbers are: 140589152100 140589152
It doesn't really matter which part number. The main difference is the length of the dipstick wich can be from 0.9 to 1.2 meters. You don't need to worry if it is longer and sticks out, because you are not supposed to leave the dipstick in there. It can be removed once you measure the fluid level.