They lieeeeeee !! lol heres the link i was looking at if ya scroll down ! No prob though Web sights often give wrong dimentions . but dont we all whats a few extra inches in theory. Seriously though , i might just go with the mopar oem part # to be absolutely sure its a perfect fitment . You never know what your getting off Amazon these days . not that i havent ordered tons from them , but not always in perfect condition on some items ive got from them. for the extra cash its some times worth going to the mopar parts counter . they have surprised me with not a huge mark up in cost at times . i generally do buy factory parts just to keep it simple if its just a minor cost item . Not that your not paying for name but sometimes the aftermarket can be less quality . Its like Amazon shows the mopar belt for 32 bucks but why is every where else 50 . there has to be a reason maybe quality or who knows . no one sells the same item for 20 bucks less these days unless theres a reason. prob send me the 87 "er
https://www.summitracing.com/parts/c...43aa/make/jeep

 

When I worked at the dealer we ordered GM part number belts, they had the GM number stamped right next to Gates or Goodyear.
in general as long as you go with a name brand, you’ll be good as far as quality, sometimes the factory GM belt was cheaper than the same Gates or Goodyear belt from the parts store, one of the few things that were cheaper at a dealership

 

Read through this and did not notice this point - please ensure you do not cross the belt groove from one groove on one pulley to a different aligned groove on another pulley. As soon as you start the engine the belt is instantly screwed and cannot be reused. Ask me how I know?