I'm in the middle of replacing my serpentine belt, and have run into some problems. Rather than take half the car apart, I'm going to get a crow foot wrench, but I'm only pretty sure that the right size is 30mm....can anybody confirm that? 2009 MCCS

My wife's 2007 Justa takes a 21mm box end and there's plenty of room because there aren't any intercooler hoses.

Edit: 30mm is the correct size for my 2009 MCCS. I used a 30mm crow foot (open end), a short 1/2 drive extension, and my torque wrench. Not much room, but it worked. A 30 mm crow foot flare nut would have worked better....if there is such a thing. I got the 30mm crow foot at Advance Auto, part number SUN97330 for about $8. The Bentley says that you have to remove the radiator brace (black metal piece across the top of the radiator.....Bentley doesn't say it, but the intercooler hose needs to come out as well if you follow their approach, but that's a pain). I didn't need to remove my radiator brace or intercooler hose.