Mercury - Enertia 3-Blade Stainless Steel Propeller 14" Diameter x 19" Pitch Right-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151239. Overview. You know that sweet spot when the throttle meets the water - that surge forward that feels perfectly controlled and effortlessly smooth? The Mercury Enertia 3-Blade Stainless Steel Propeller (Part Number 8M0151239) gives you that sensation every time you hit the throttle. It's built for boaters who crave connection with their craft - tha