Mercury - Quicksilver Q4 Propeller 14.6" Diameter x 23" Pitch Right-Hand Rotation 4-Blade Stainless Steel Polished Finish 8M0103532. Overview. There is a certain kind of confidence that comes when your prop digs in just right - when you hit the throttle and feel the boat rise, clean and sure. That's the Quicksilver Q4. It is more than speed, it's about control, balance, and that confident lift that makes it feel like the water's on your side, not fighting you. Whether you're carving through a gl