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      What are the dimensions of 3991431?

      Product Description: 1971-79 Buick, Chevy, Olds, Pontiac; 7 Fan Blade Fan; 19-1/2"; Black

      Measurements: 2.5" inside diameter, 4 x 3.25" bolt pattern

      3991431

      For more information, follow the link: 1971-79 Buick, Chevy, Olds, Pontiac; 7 Fan Blade Fan; 19-1/2"; Black