Mercury - Quicksilver Q4 Propeller 14.6" Diameter x 17" Pitch Left-Hand Rotation 4 Blades Stainless Steel Polished Finish 8M0103527. Overview. You know that perfect moment when everything clicks-the throttle responds, the bow lifts, and your boat just glides. That's the experience you get with the Quicksilver Q4 Stainless Steel Propeller (Part Number 8M0103527). Built for boaters who crave instant response, balance, and power, the Q4 turns raw engine energy into precise, exhilarating motion. Eve