Steel 2-groove V-belt water pump pulley for Chevrolet small block engines equipped with an early short water pump. Measures 6.20 inches in diameter and fits pumps with a 5/8-inch pilot and a 1.75-inch bolt circle. Available in chrome or black finish. Designed for standard drive ratios (not underdrive or overdrive) and requires use with a matching Summit or Trans-Dapt steel crankshaft pulley for proper belt alignment. A durable upgrade that maintains reliable water pump operation and offers a clean, finished appearance. Sold individually.