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Review on ACDelco GM Original Equipment 12580773 Drive Belt Idler Pulley: Reliable and Sleek Black Design by Joseph Flamm

Revainrating 5 out of 5

Good replacement. for belts, hoses and pulleys

is almost identical to the factory part. The only difference is that the GM part number is stamped on the metal while this is printed on the metal. Installation was very quick and easy. The old pulley lasted 18 years, look at this one.

Pros
  • Very good price
Cons
  • Modern