Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 9.9" Diameter x 11" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | High-Gloss Black Finish | QA3810R

Overview.

There’s something incredibly satisfying about running a prop that just feels right the kind that gives your boat steady lift, smooth acceleration, and a confident sense of control no matter the water. The Quicksilver Black Diamond 9.9" x 11" Pitch Propeller (QA3810R) does exactly that. It’s not about flash or overcomplication; it’s about reliability, balance, and performance you can count on every single trip.

Whether you’re exploring calm coves, cruising across open water, or running a light fishing rig, this prop keeps your boat responsive and predictable. It’s that quiet, steady confidence that makes your time on the water more enjoyable and a lot less work.

Key Features.

• Diameter and Pitch: 9.9-inch diameter, 11-inch pitch.
• Rotation: Right-Hand.
• Blade Count: 3-Blade design for reliable thrust and efficient acceleration.
• Material: Durable aluminum for lightweight strength
• Finish: High-gloss Phantom Black for corrosion resistance and easy cleaning.
• Hub System: Includes a pre-installed rubber hub for secure, vibration-free performance.
• Design Details: Precision-cast aluminum construction for balanced, consistent operation.

Engine & Boat Compatibility.

• Designed for 20–30 HP Yamaha outboard engines with 10-tooth splines
• Compatible with other engine brands through the Quicksilver Flo-Torq II hub system
• Ideal for small fishing boats, light runabouts, inflatables, and utility boats
• Recommended for boats with top speeds under 50 mph
• Suitable for both freshwater and saltwater applications

Performance Benefits.

The Mercury Quicksilver Black Diamond 11" Pitch Propeller is built for boaters who want dependable performance without the fuss. From the moment you ease into the throttle, you’ll feel the prop grab the water cleanly — no slip, no lag, just a confident push that gets your boat up on plane quickly. Its three-blade design provides steady lift and smooth acceleration, giving smaller boats a surprisingly responsive feel.

Once you’re underway, the Black Diamond really shows its character. It delivers smooth cruising, predictable handling, and solid midrange control, even when you’re adjusting speed or turning through chop. The balance of the aluminum blades helps minimize vibration, keeping your ride comfortable and your motor running efficiently.

Maintenance is refreshingly simple. The Phantom Black finish protects against corrosion, sand, and salt while keeping the prop looking sharp season after season. And because it’s made from aluminum, it’s easy and affordable to service or replace a smart choice for everyday boaters who value practicality as much as performance.

It’s not just about getting where you’re going faster it’s about making every trip feel smoother, quieter, and more in tune with your boat and the water beneath it.

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

The Quicksilver Black Diamond QA3810R strikes that perfect balance between performance and value. It’s Mercury-engineered, so you know it’s built right, but it’s also designed to make ownership easy. Compared to stainless steel props, it’s lighter, more forgiving if you hit shallow ground, and far more affordable to maintain without sacrificing dependable, everyday performance.

For smaller boats or casual weekend outings, this prop is a no-brainer. It’s smooth, responsive, and built to last, giving you that effortless control and confidence that every boater appreciates. Whether it’s your main prop or a trusty backup, it’s one of those pieces of gear you’ll be glad to have on hand.

FAQ

Q1: Which Mercury engines does the Quicksilver Black Diamond 11" Pitch Propeller fit?

This propeller fits 20–30 HP Yamaha outboard engines with 10-tooth splines and can also work with other brands when used with the Quicksilver Flo-Torq II hub system.

Q2: What makes this propeller different from other Mercury options?

It combines dependable, all-around performance with easy maintenance and affordability a perfect blend for smaller boats and everyday use.

Q3: How do I know if this pitch or size is right for my boat?

If your boat runs in the 20–30 HP range and you want steady acceleration, good lift, and simple maintenance, the 11-inch pitch is an excellent match.

Q4: Can this prop be used in both saltwater and freshwater?

Yes. The high-gloss Phantom Black finish provides strong corrosion resistance in any environment.

Q5: What hub system does it use?

This prop comes with a rubber hub included and can also work with the Quicksilver Flo-Torq II hub system for broader engine compatibility.