Review on ACDelco GM Original Equipment 12580773 Drive Belt Idler Pulley: Reliable and Sleek Black Design by Sam Duppa
Literally worse than a worn part. Wouldn't recommend
Can't believe this is an OEM part. The washers are plastic, the bearing clearance is ridiculous. See above for a comparison of a worn pulley with bearings removed which will perform better than a new part. I felt it was unsafe for my car and returned it immediately.
- Great product
- Good but not great
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