This is what I used. https://www.amazon.com/CTA-Tools-301.../dp/B00FQSUUKG

Just a few taps of the button each time you switch cyl and you are all set. There is no easy to get a socket on the crank without an adapter. The above switch hooks to a pin on the starter so it is easy to hook up once the intake is off.

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2009 35d, 2006 325i & 330i