So after buying a new replacement belt for 2.4l we realized that the one from zzp only had ribs on one side where the wheels on our engine have grooves for the ribs on both sides. The previous belt also had ribs on both sides. After looking around a little bit I couldn't find any double sided 703 5 rib belts. That is what we think we need. So if anyone knows anything about this that would be great. I am assuming it is not a good idea to put on the zzp belt that is not ribbed on both sides.