I ordered this serpentine belt for my Saturn SC2 97 DOHC because I needed to purchase an aftermarket belt tensioner from my local parts store. After some research I found that the new aftermarket tensioner pulley is smaller than stock or factory. I installed this 778 series belt which is two inches shorter than the 780 series belt that was sold to me at my local parts store and it fixed the tension rattle and horrible noise problem. Thank you for stocking this belt and getting it to me so quickly. Very grateful. Thanks again!