Only the 1995 E300 (W124) has the OM606 with the long glow plugs that get stuck. The dual overhead cams caused the glow plug to be relocated and the only way it could reach the prechamber is to make it really long. Note this engine is used in the 4 years of diesel W210s from 1996 to 1999. These too have the long plugs that get stuck.

The earlier 124s (1987 to 1993) all used the 603 or 602 with stubby plugs. No problem getting those out.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech