Yes, that's right! I have two K&N Air Filters, sealed in the box for sale. The first $80.00 bucks takes them. They fit E55 99-02 Drop me a line if interest.
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"It's not a matter of picking your nose; it's a question of where you put the booger"
Currently Own:
2000 E55 AMG (Black Widow)
Previously Owned:
1987 300E (Ministry of Sound)
1983 280SE (Big Papa)
1984 190D (Little Red Devil)
I had K&N in mine and they are preoiled. I cannot find a cone one with heatshield so I settled with a K&N. Some discussion thread said the green filter is better with less oil. I don't have issue with the oil yet. I haven't taken it off to clean. It is a hassle as you have to pull the whole plenum off and undo 12 or 14 screws in the back.
Didn't feel any difference with the K&N in sound and drivability. Probably all mental.