Mercury - Enertia 3-Blade Stainless Steel Propeller 14" Diameter x 19" Pitch Left-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151238. Overview. There's a moment on the water that never gets old - when the throttle goes down, the bow lifts, and the boat surges forward like it's alive. The Mercury Enertia 3-Blade Stainless Steel Propeller (Part Number 8M0151238) delivers that feeling every single time. Built for boaters who crave power and precision, it's fast, steady, and responsi