The '..237' valve you pictured there looks to be for the M54 3.0 engine, not the N62 4.4 liter. If you look up TSB SI B 11 08 03 for a 2004 X5 3.0i, you'll see it listed.

I looked at one of these today, it had overpressurized the crankcase so bad it ruptured... Login to read more.