Mercury - Revolution 4 Propeller 14.6" Diameter x 15" Pitch Right-Hand Rotation 4-Blade Stainless Steel Polished Finish 8M0151315. Overview. If you've ever spent a day pushing your boat through rough chop or loading it down with family and gear, you know the value of a prop that just grabs and goes. The Mercury Revolution 4 Propeller ( 8M0151315) is one of those rare pieces of gear that instantly earns your trust. It's built to lift heavy boats onto plane fast, keep a solid hold through turns, a