Bought for my Yukon XL 2002 with 5.3L engine. I have a 145 amp alternator with a larger housing (same size pulley) and need a longer belt as the tensioner on the one I had previously was fully extended. This one has the tensioner about halfway out, which isn't exactly perfect, but it's better than before. It is beautiful and durable, with no creaking or other problems. For the price it's great; Most stores will do the job and list the part for around $100. It took at least 10 minutes on my car and with an extra set of hands it took less than 5 minutes.