MerCruiser High Speed Bravo Nose Cone 1990-newer 

 MerCruiser High Speed Bravo 1990-newer

Nose Cones are recommended on boats running in the 80 MPH range to enhance propeller efficiency and eliminate blow out.  Propeller blow out is encountered when water separates from the gear case to the point where the distance is equal to or greater than the radius of the propeller MPH gains can be 2 to 6 MPH with the right propeller set up.  Bravo castings are for 1990 and later.  All nose cone castings are 6063-T6 and molded to a glove like fit.  This enables it to be installed with epoxy putty. Does not fit Bravo 2 or 3 drives.