Mercury - Tempest Plus 3-Blade Stainless Steel Propeller 14.6" Diameter x 24" Pitch Right-Hand Rotation 3-Blade Stainless Steel Polished Finish 8M0151385. Overview. There's nothing quite like the rush when your boat rises effortlessly onto plane, grips the water, and responds to every throttle push with smooth, confident power. That's the experience you'll get from the Mercury Tempest Plus 14.6" x 24" Pitch Propeller (8M0151385). It's designed for boaters who crave the perfect mix of lift, contr