Mercury - SpitFire 4-Blade Aluminum Propeller 14" Diameter x 23" Pitch Right-Hand Rotation 4 Blades Aluminum Polished Finish 8M0084497. Overview. There is nothing quite like the moment your boat responds the instant you touch the throttle - the bow lifts, the engine hums, and you're gliding over the water with complete control. That's the kind of confidence the Mercury SpitFire 4-Blade Aluminum Propeller (Part Number 8M0084497) delivers. It's built for boaters who love the balance of power and p