Mercury - Trophy Plus 4-Blade Stainless Steel Propeller 13.8" Diameter x 23" Pitch Right-Hand Rotation 4-Blade Stainless Steel Polished Finish 8M0151392. Overview. There's nothing quite like the moment your boat lifts onto plane, steady and sure, as the throttle hums and the water parts cleanly behind you. That's the kind of performance the Mercury Trophy Plus 13.8" x 23" Pitch Propeller (8M0151392) delivers effortless lift, tight handling, and confidence that lasts from launch to full speed.. I