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Old 01-23-2012, 10:50 AM   #2051
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Join Date: Nov 2007
Location: Raleigh, NC
Posts: 1,295
My Ride: 528i 06/00
Originally Posted by Lassie View Post
Thank you Rajaie. So, just to be 100% sure - any preventive replacement of this flange / seal doesn't really make any sense if it is not visibly leaking / there are no problems with VANOS and the rings will flatten leaving similar diameter as the old ones anyway after some time (though it doesn't have any negative effect on the oil flow (if they're tight / have not detriorated)?

Thank you.
That's correct, but they all eventually leak. Also once you've disturbed an old one you should probably not reuse it as it will likely leak.

The solution is to get the Beisan repair kit. The Viton O-rings will last much longer.
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