Seller notes

1999-2013 GM Truck/SUV Silverado Sierra 3.0" Overdrive Billet Aluminum Alternator PulleyFactory OEM alternators are only designed to spin up to 18K RPM so if you have a high revving LS engine and you are replacing alternators every other pass, chances are you need a larger alternator pulley. (SEE ATTACHED CHART)Manufactured right here in the USA this 6061 billet aluminum 3.0" overdrive alternator pulley was made to replace the GM steel pulley. 3 inch outside diameter, 0.670" bore diameter and 6-...

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