3 Here's looking at the stock steel pulleys and alternator bracket setup we'll be glad to get rid of. This was what was on the car when we purchased it. Notice the diameter of the pulleys is different to drive each belt for the alternator and the power steering pump. The large diameter crank pulley made for excessive belt speed with the small diameter alternator pulley that causing it to throw the belt at high rpm. The stock alternator bracket and spacer contributed to the alternator belt alignment being slightly off center.