Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 10.9" Diameter x 11" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Black Finish | QA2070X

Overview

Every boater knows the sweet spot — that moment when your boat lifts smoothly onto plane, the engine hums low, and the water feels like glass beneath you. The Quicksilver Black Diamond 10.9" x 11" Aluminum Propeller was made for that feeling. It’s the kind of prop you can count on every trip — no drama, no surprises. Just steady acceleration, easy control, and dependable performance. Crafted with Mercury’s precision, it’s trusted by boaters who want a prop that delivers balance, strength, and reliability day after day.

Key Features

• Diameter and Pitch: 10.9" diameter, 11" pitch
• Rotation: Right-Hand
• Blade Count: 3 blades
• Material: Cast aluminum
• Finish: High-gloss Phantom Black coating
• Hub System: Quicksilver Flo-Torq II (multi-brand compatible)
• Design Details: Durable casting for engines up to 250 horsepower and top speeds below 50 mph

Engine & Boat Compatibility

• Designed for 40–60 horsepower Mercury outboard engines
• Compatible with Mariner and MerCruiser models using the Flo-Torq II Hub System
• Suitable for Honda and Tohatsu engines when paired with the Flo-Torq Reflex Thrust Washer (part number 8M0046466, sold separately)
• Great fit for runabouts, small fishing boats, pontoons, and aluminum craft that value smooth, reliable performance

Performance Benefits

The Black Diamond’s performance is all about balance — quick out of the hole, steady in the turns, and smooth when cruising. The three-blade design gives you that satisfying pull as the propeller bites cleanly into the water, lifting your boat onto plane without hesitation. Once up to speed, it delivers a consistent, predictable ride that feels natural under your hand.

You’ll notice how quiet and composed it feels when you throttle down near the dock — no harsh vibration, just steady responsiveness. It’s that smooth control that makes boating with this prop a pleasure. The Phantom Black finish not only adds sleek style but also protects against salt, corrosion, and wear, making cleanup quick after a day on the water.

Durability is another strong point. Its aluminum construction provides resilience that stainless props can’t match at this price point — if you hit a sandbar or graze a submerged branch, it’s often repairable and ready to get you back out there. Reliable, forgiving, and efficient — that’s what makes this prop a staple for Mercury owners.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Built to Mercury’s exacting standards for performance and reliability.
• Durable and affordable: Aluminum construction delivers dependable power without the cost of stainless steel.
• Easy to maintain: The Phantom Black finish resists corrosion, chips, and scratches for long-lasting good looks.
• Versatile fit: Works across multiple brands using the Flo-Torq II system for easy installation.
• Real-world reliability: Proven to perform for everyday boaters who need a prop that simply works — every time.

For boaters who prefer confidence over complication, the Black Diamond 10.9" x 11" hits the mark. It’s the right mix of performance, value, and trust — perfect for weekend cruising, fishing trips, or relaxed runs across the lake.

FAQ

Q1: Which Mercury engines does the Quicksilver Black Diamond 10.9" x 11" fit?

It’s designed for Mercury outboard engines ranging from 40 to 60 horsepower, including Mariner and MerCruiser applications with the Flo-Torq II Hub System.

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

It offers the same trusted Mercury engineering but in a more affordable aluminum design that balances performance and value for small to mid-size boats.

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

If your boat runs on a 40–60 horsepower engine and you want a prop that delivers steady lift, reliable speed, and smooth handling, the 10.9" x 11" pitch is an excellent fit.

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

Yes. The Phantom Black finish helps prevent corrosion and wear in both environments. Just rinse after saltwater use to maintain its shine.

Q5: What hub system does it use?

This model uses the Quicksilver Flo-Torq II Hub System, making it compatible with multiple engine brands and allowing easy installation.