Mercury - Enertia ECO Propeller 16" Diameter x 23" Pitch Left-Hand Rotation 3-Blade Stainless Steel Polished Finish 8M0151262. Overview. If you've spent years on the water, you know it's not just about speed - it's about efficiency, balance, and the feeling that your boat is running exactly the way it should. The Mercury Enertia ECO Propeller ( 8M0151262) delivers that feeling in every throttle push. Designed for long runs and long days, it helps you go farther on less fuel, without giving up th