So the alternator I installed in June this year that was replacing the original one that lasted 121k miles and 10 years went on me again only after about 5k miles and 5 months. Coming home from the movies yesterday the change fault light came on again. I got a new NAPA one and it comes with a life time warranty. So I took it to NAPA and I asked the guy to test it and it cam up bad. So they gave me a new one. I hope this one last.