Mercury - Enertia ECO Propeller 16" Diameter x 23" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 8M0151263. Overview. There's a moment every boater knows that smooth, effortless feeling when your boat settles into its stride, gliding across the water with power and grace. The Mercury Enertia ECO Propeller ( 8M0151263) delivers exactly that kind of satisfaction. It's designed for those long runs where efficiency matters just as much as performance. You'll notice how it digs in