Genuine OEM alternator belt for 1275 JDM Minis with air conditioning. The factory AC cars used a 2 belt system. This is the belt that runs the alternator. These are very good belts that fit better than anything you can find at your local parts store.
 
Don't forget to get the main fan belt! If you have an injection model, use WC-1360. If a carbureted 1275, use WC-1355.