Billet 6061 T-6 Aluminum.
Replaceable bearing and snap ring.
Same high spec bearing as GM LS3 (12x17x40mm)
Front and belt surface polished.
Has guides like the stock pulley
Comes with snap ring and bearing installed.
Pulley is Made in the USA.
Fits 6-ribbed serpentine belts. Note that the pulley is NOT ribbed.
Diameter 3.25, 3.46 overall diameter with guides