I would (and did) replace the seal during a timing belt change. Mine was very hard and dry from many years use. It's not that expensive to buy. Just be sure to carefully remove the old seal so as to avoid damaging the sealing area. You can polish the old seal area with some crocus (sp) cloth.

Cheers,

Roland

Quote Originally Posted by BMWfreak
Hi Guys !
I am preparing to change the timing belt in my (M20) 525i and I am looking for BMW coolant, is there a place online to buy it or do I have to go to BMW dealer ???? Also when replacing the belt is it neccesary to replace the camshaft seal ??? www.bmwe34.net puts it on the parts list but the guy who is helping me with the replacement didn't mention it, I am confused.
Thanks,
Daniel