Mercury - Enertia ECO 3-Blade Stainless Steel Propeller 16" Diameter x 17" Pitch Right-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151251. Overview. There's a moment on the water when everything just feels right - when the throttle eases forward, the boat lifts smoothly, and the engine hums in perfect rhythm. That's the feeling you'll get from the Mercury Enertia ECO 3-Blade Stainless Steel Propeller (8M0151251). It's designed for boaters who love to stretch their range, spend mo