Outstanding Contributor W221 Moderator
2010 E350 P1/P2, 2008 S550 Designo, 2002 ML320
So I went to change my belt this weekend and found that the bolt through the center of the pulley is a Security Torx head (see picture). Does anyone else have this? If so, do you remeber what size it is? I hate to buy 12 bits when I just need one.
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