Correct on the filter within the reservoir is NONE replaceable. The part it self is cheap and an easy install. The aftermarket ones are not too bad either. STAY AWAY FROM URO ones. Spend the 3-5 bucks more and get a quality part. Visit www.ecs.com and [http://www.eeuroparts.com] to see a large selection of parts

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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green