I am seeing Bosch direct fit/non-generic for about $118, only a $30 to $40 premium over the generics, so I agree it is worth the additional cost.

Word to the wise: There is no way a $50, no-brand, eBay sensor is a quality part. (Lesson learned.)

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black