and used Nissan belts which came with it. They where not the same size as used with the oem crank pulley and the one for the alternator was really small (NISSAN A1950-32FOO). I knew it would be murder trying to get it on, so I put the oem size belt on to see if it would fit. It did and as it turns out the instructions that came with the UR Pulley said to use the oem size belt for the alternator, even though a smaller belt came with the new belts and all references I have read said to use the smaller belt. I used the oem size belt that works with the oem crank, part number OA195M-F65SAVW. Works great and no problems. Hope this helps, or gives you a lead.