The pulley has damage - should you choose to remove it, the bolt is stripped and will need to be drilled out. DESC. From ZZP This piece will replace your stock LSJ tensioner arm and it has three different holes for the tensioner pulley to be bolted to. It will allow you to use the stock belt down to a 2.6" pulley while retaining the proper belt tension. This is an upgrade from LSJ oversized tensioner pulley and GM stage 2 belt. Works for: 2005-07 Chevy Cobalt SS 2.0 Supercharged engines 2004-07 Saturn Ion Redline 2.0 supercharged engines
