Borrowed this very long and thin "belt tensioner tool" from AutoZone for free. Took off the old hardened belt. I spent an hour putting this new belt on. actually did the job himself. I'm not a mechanic or even mechanically inclined, but I was able to do the belt change myself in less than 3 hours. Did I creak at first? I couldn't figure out if it was a belt, pulley, or alternator. Thankfully, this belt got rid of that annoying squeak! It fits my 2004 Toyota Celica GT (2ZZ-FE?) perfectly.