Mercury – Quicksilver Bravo Three 4-Blade Stainless Steel Propeller | 15.9" Diameter x 21" Pitch | Left-Hand Rotation | 4-Blade | Stainless Steel | Matte Finish | 8M0123404

Overview

There’s a deep satisfaction in feeling your boat respond perfectly — steady, balanced, and ready for anything. The Quicksilver Bravo Three 4-Blade Stainless Steel Propeller (Part Number 8M0123404) delivers that kind of control and power every time you throttle up. Built for boaters who expect performance without compromise, it brings seamless acceleration, rock-solid handling, and a level of confidence that only a dual-prop setup can offer.

Key Features

• Diameter and Pitch: 15.9" Diameter x 21" Pitch

• Rotation: Left-Hand Rotation

• Blade Count: 4-Blade front prop paired with a 3-Blade rear prop for balanced, contra-rotating performance

• Material: Premium Stainless Steel for strength, precision, and long-lasting durability

• Finish: Matte finish adds corrosion resistance and a rugged, professional look

• Hub System: Compatible with Mercury’s Flo-Torq Hub System for quiet, smooth, and reliable power transfer

• Design Details: Contra-rotating propeller system delivers up to 8% faster acceleration and improved grip over the Quicksilver Thunderbolt BIII

Engine & Boat Compatibility

The Quicksilver Bravo Three 15.9"x21" Propeller is made for larger, high-horsepower boats that demand control, balance, and pure pulling power.

• Designed for Mercury MerCruiser Bravo Three sterndrive systems

• Compatible with 250–400 HP engines

• Ideal for cruisers, high-performance runabouts, and heavy pontoons

• Perfect for boaters who prioritize stability, strong acceleration, and efficient high-speed cruising

Performance Benefits

When you push the throttle, the Bravo Three 8M0123404 turns raw horsepower into motion that feels smooth and intentional. Its dual-prop system — a large 4-blade front prop working in sync with a smaller 3-blade rear prop — provides incredible lift and bite, propelling your boat forward with precision.

The contra-rotating design minimizes prop walk and torque steer, giving you effortless control whether you’re docking, accelerating, or carving through open water. You’ll feel the boat rise smoothly onto plane, grip cleanly in turns, and stay stable in rough conditions. Compared to the Quicksilver Thunderbolt BIII, this setup offers up to an 8% boost in acceleration — and that’s something you’ll notice every time you head out.

At cruising speed, the Bravo Three maintains a firm, predictable grip on the water, translating torque into steady thrust. Its 21" pitch delivers the right mix of speed and control, helping you reach top-end performance without losing comfort or efficiency. The stainless-steel construction ensures rigidity and durability under high loads, while the matte finish resists corrosion, standing up beautifully to saltwater and freshwater alike.

Why is this prop is a strong choice vs. alternatives?

The Quicksilver Bravo Three (8M0123404) is for boaters who want a prop that feels as dependable as it is dynamic. Whether you’re powering through open water or maneuvering into tight spaces, it gives you control, speed, and confidence that’s hard to match.

Why this prop is a smart real-world choice:

• Mercury OEM quality: Designed, engineered, and tested by Mercury for lasting performance.

• Reliable and easy to maintain: Stainless steel resists flex, corrosion, and fatigue.

• Performance advantage: Contra-rotating system boosts acceleration and handling with smoother transitions.

• Versatile fit: Ideal for cruisers, performance runabouts, and large pontoons equipped with Bravo Three drives.

FAQ

Q1: Which Mercury engines does the Quicksilver Bravo Three Propeller fit?
It’s made for Mercury MerCruiser Bravo Three sterndrive systems typically running between 250–400 HP.

Q2: What makes this propeller different from other Mercury options?
Its contra-rotating system — featuring a 4-blade front prop and a 3-blade rear prop — delivers superior acceleration, balance, and torque control compared to traditional single-prop designs.

Q3: How do I know if this pitch or size is right for my boat?
A 15.9" diameter and 21" pitch are ideal for larger boats that need strong lift, reliable cruising efficiency, and steady high-speed control.

Q4: Can this prop be used in both saltwater and freshwater?
Yes. The stainless-steel build and matte finish provide long-lasting protection against corrosion in all environments.

Q5: What hub system does it use?
It’s compatible with Mercury’s Flo-Torq Hub System, which cushions the drivetrain, reduces vibration, and ensures smooth shifting and power transfer.