Mercury - Bravo Four S Front Propeller 24" Pitch Left-Hand 4-Blade Stainless Steel Polished 8M0167007. Overview. If you have ever pulled a rider behind a surf boat, you know how important a clean, confident pull feels. The Mercury Bravo Four S Front 4-Blade Stainless Steel Propeller (8M0167007) gives you that smooth, planted push through the water. Every throttle tap feels immediate and steady - no slipping, no vibration, just strong, quiet thrust that gets heavy tow boats on plane without drama