Brand new machined aluminum double groove water pump pulley. This pulley fits 1955-68 small block chevy's with a short water pump and has deep grooves that prevent belts from slipping. This pulley is 6.60 inch diameter with a bolt circle of 1.75 inch. Machined aluminum finish. Sold each.\n\nDetails:\nFits all Chevrolet SBC Engines (265, 283, 305, 327, 350, 383, 400) When Used With A Small Water Pump\n6-5/8" Diameter\n3" Height\n1-3/4" Bolt Pattern\n5/8" Center Hole\nMachined Billet Aluminum\nSold Each\n\nAlso available in Polished Aluminum and Black Aluminum