Used 13.9mm-42 tooth blower pulley. This pulley is 3.50" wide and has a 2.00" register made from billet aluminum with six .375" bolt holes on a 2.782" bolt circle. Fits 4-71 thru 18-71 roots superchargers. Pulley has one offset mounting hole for older crank hubs and blower snouts.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.