Mercury - Quicksilver Q4 Propeller 14" Diameter x 13" Pitch Right-Hand Rotation 4-Blade Stainless Steel 8M0055559. Overview. There is a certain satisfaction in throttling up and feeling your boat respond instantly - the bow rises, the engine hums just right, and the water peels away in smooth, confident motion. That is exactly the experience the Quicksilver Q4 Stainless Steel Propeller delivers. This prop isn't just about power; it's about connection - that intuitive feel when you know your setu