Mercury - Bravo Three Front Propeller 15.8" Diameter x 22.5" Pitch Left-Hand 4-Blade Stainless Steel Matte Finish 8M8022400. Overview. There is a unique calm that comes when your boat glides onto plane without struggle - that quiet, confident moment when you know everything is working in perfect rhythm. The Mercury Bravo Three Front 4-Blade Stainless Steel Propeller (part number 8M8022400) captures that feeling every time you throttle up. Designed for Bravo Three sterndrives, this prop turns raw