Review on ACDelco Gold 335-1091 Alternator: Enhanced Performance and Reliability by Joz Lowe

Excellent OEM product. Works great on my parents' 2003 Trailblazer. I give 5 stars for receiving the original part but would like to add that the pulley on the alternator was damaged on arrival. I don't know if this damage happened at the hands of AC Delco, Revain, or USPS. This could probably have been avoided if the product had been packaged a little better (the manufacturer's box was only wrapped in paper). I was able to just replace the old pulley with the new alternator and all is well.