replace the 2 tensioner pullies and 1 idler pully, also replaced the ofhg ,it was hard as a rock and leaking badly. but you can do it without unbolting the power steering pump, i just did. its a pain to do, but not hard just time consuming for a 6.00 part.putting the alt back on I just lubed the bottom of the alt where the bolt goes through and it came off and went on easily .

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2003 bmw x5 3.0i ,219000km build date 2003-08-18