Aircraft Model(s): 185 thru 185E. Applicable Engines: IO-470-F. 1 - Polished Spinner Assembly C-3575P, 1 - STC Document Set SA02821CH, 1 - 3-Bladed Propeller PHC-C3YF-1RF/F8068. 82 inch diameter 3-bladed, scimitar, aluminum hub propeller.