If you need one it will work, but usually you just need the pulley. Ultra Power isn't the best, but they will get the job done. Their stuff typically fails a bit faster than competitors. I'd expect the spring to be fine for many years, but the pulley will most likely be noisy shortly after the warranty is over.
The 2nd lowest competitor on Rock Auto is over twice the price, but it has a lifetime warranty. Dorman 419040
I am certainly one for saving money, but a belt tensioner is not one of the things that I would go cheap on. My 99 GC Sport that ate 3 belts before I changed out a cheap tensioner and replaced with a Mopar piece. Not all inexpensive tensioners are no good but I had bad luck with mine.