Originally Posted by latemodel21

Yes, "pilot bushing" (and pilot bearing in some cases) normally refers to the bushing/bearing that the input shaft of the transmission is located by in the crankshaft (and can spin in when the transmission is dis-engaged via the clutch)

the part may be called " 13 PIN CONNECTOR PLUG BUSH " in some lit (seems more descriptive) ... perhaps this is Chrysler literature?
However, Mercedes calls the connector seal/bushing "pilot bushing" (plug the part number 203 540 02 53 into any Mercedes online part catalog .... example https://www.mbdirectparts.com/?p=cat...0540%2002%2053

Perhaps this is some artifact of a german to english translation issue .... dunno


weirder than the naming is the issue that it creates when not replaced (as a maintenance item) which is (as many are aware) transmission fluid "wicking" thru the harness from the transmission and making its way into the TCU ..... causing a mess and damage in some cases .

I hope that helps,
Chris