Steel V-belt water pump pulley for Chevrolet small block engines using a long water pump. Features a single groove and a 6.25-inch diameter, maintaining standard accessory drive speeds (not underdrive or overdrive). Finished in black and intended for use with a matching Summit or Trans-Dapt steel crankshaft pulley to ensure proper belt alignment. A durable, clean-looking upgrade that helps maintain consistent water pump operation. Sold individually.