The original blower motor in my 2000 Ford Expedition had a minor rattling noise at higher speed, and was overall a little noisier. This replacement fixed the rattle, and runs smoother, even at the lowest speed. Perfect fit, bolts right in. Not so perfect was the actual replacement procedure, what a PITA, shame on the Ford designers! But not this product's fault. Be prepared to sweat while trying to access the bolts and pull out this part, this is no fun!