I'm replacing the OFHG on my son's 2001. I noticed he needed new serpentine belts for both the main drive and the ac. I figured I replace the tensioner pulley and idler pullys while I'm in there.
The old pulleys have a large center hole and seem to rest on a the tensioners shoulder using the star bolt. The new pulleys are different. They have a back on them and the threaded part of the star bolt fits through. Are these correct? Realoem seems to show the right part number.
New pulley below. Old ones have a large opening all the way through.
Old pulleys look like these