iamdub
Full Access Member
ACDelco was good enough for X miles on your rig, but it's widely known that Timken is good stuff anywhere else in the bearing world. They may even supply to ACDelco. My first thought is to go with ACDelco as it's likely cheaper and should last just as long as the originals. But there's always a chance GM switched suppliers or even uses a different supplier for their replacement parts. I'd bet that Timken is consistently the safe go-to for this.