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Q:what is the inside diameter of this hose?
A:This Dayco Curved Radiator Hose - Part No. D70324 has the hose end (1) inside diameter 1.63 inches, hose end (1)outside diameter 2.005 inches, hose end (2) inside diameter 1.75 inches and hose end (2) outside diameter 2.125 inches. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.