Retrofit/Replacement Idler/Tensioner Pulley, Plastic, Flanged for Electric Water Pumps

Dayco part number 89003.  Polymer idler/tensioner pulley with flanged edges.

 Works better than the smooth steel pulley if running an electric water pump.  The side flanges prevent the belt from being thrown.

These are also available from your local auto parts store.

The diameter where the belt runs is 3.03"

Also see our Billet Aluminum pulley recommended for high HP applications.