Mercury - Revolution 4 4-Blade Stainless Steel Propeller 14.6" Diameter x 19" Pitch Right-Hand Rotation 4-Blade Stainless Steel Polished Finish 8M0151321. Overview. When you're running a heavy deep-V boat through rough water or towing a crew behind you on a bright weekend, you need a propeller that doesn't flinch under pressure. The Mercury Revolution 4 4-Blade Stainless Steel Propeller (Part Number 8M0151321) was built for those kinds of days - the ones that test both your skill and your equipm