When installing a roots charger setup one of the items needing to be addressed is belt routing. In almost all installs the belt will need to be routed between the thermostat housing and water outlet from the crossover which means that you will be utilising the upper most pulley position.
As the rear of the belt will be in contact with the pulley it is highly recommended that the factory ribbed pulley is removed and a flat pulley installed, this pulley does exactly that.
Included in this kit:
~ Polymer pulley
~ High tensile metric bolt with washer