I was planning to replace the main seal behind crank pulley when I noticed that my alternator tensioner screw pictured here : http://www.4dsc.com/articles/drivetrain/udp/udp.shtml on the 7th picture down broke in half. Even if the dealership had this part I think the best place to buy it is at a hardware store does anyone know the size of this bolt?

Thanks

 

take the bolt to the hardware store and match the size, length, and the thread. It'll probably be a fine threaded metric bolt.