if this is on your 96 e320 with the m104 engine you'll find this thread interesting:

http://www.peachparts.com/shopforum/showthread.php?t=109372&highlight=EGR+spare

i had a heckuva time getting the thing out and eventually gave up and just cleaned the dirty/plugged side. Problem free since june (4k miles)

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE