Product Description 1. Small Block Chevy Aluminum Water Pump Upper Pulley 2. Satin Aluminum Pulley. 3. Fits Small Block Chevy 283-350 Engine. 4. Fits 1955-68 Short Water Pump. 5. Double Groove. 6. 6.60" Diameter with 1.75" Bolt Circle Package Included: As Shown In Our Pictures. Professional Installation is Highly Recommended (No Instruction Included).
