Mercury - Enertia 3-Blade Stainless Steel Propeller 14.5" Diameter x 17" Pitch Right-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151235. Overview. There is a feeling you get when your boat leaps onto plane - that rush of power, that moment when everything feels balanced and in sync. The Mercury Enertia 3-Blade Stainless Steel Propeller (Part Number 8M0151235) captures that feeling every time you throttle up. It's quick, confident, and precise - a prop that doesn't just move your