This is an Original GM Cooling (Radiator) Fan Blade for 1977 thru 1979 Nova, Camaro, Impala and Caprice, Chevrolet and GMC Trucks with a 305 engine without AC and Non Heavy Duty Cooling. Part #10000138 with code #916557 and Date code D79. Fan Blades are in good condition, Fan Clutch should be replaced. See Pictures