Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 8.9" Diameter x 7.5" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | High-Gloss Black Finish | QA2154R

Overview

There is something deeply satisfying about the way a well-balanced prop moves through water — the hum of the engine, the smooth lift, the steady glide that feels effortless. That’s what the Quicksilver Black Diamond 3-Blade Aluminum Propeller delivers. It is reliable, forgiving, and built for boaters who appreciate smooth control and quiet confidence over flashy numbers. You’ll feel it the moment you shift into gear — responsive, steady, and ready to take you wherever the water leads.

Key Features

• Diameter & Pitch: 8.9" Diameter x 7.5" Pitch
• Rotation: Right-Hand
• Blade Count: 3 Blades
• Material: Durable aluminum for strength and balance
• Finish: High-gloss Phantom Black coating for lasting corrosion resistance
• Hub System: Rubber hub included for quiet, smooth operation
• Design Details: Precision-cast design reduces vibration and improves acceleration

Engine & Boat Compatibility

• Built for Mercury FourStroke outboard engines in the 8–9.9 horsepower range (2005 and newer)
• Compatible with Mariner engines using the same hub configuration
• Perfect for small fishing boats, inflatables, dinghies, and utility skiffs
• Best suited for boats with moderate loads and top speeds under 50 mph
• Works well across freshwater and saltwater environments

Performance Benefits

What stands out most about the Black Diamond 3-Blade Propeller is how smooth and forgiving it feels in real conditions. Acceleration is steady — no harsh jerks or cavitation — just clean grip and consistent lift. The 3-blade setup gives your boat the right amount of thrust at lower speeds while maintaining effortless cruising once you’re underway.

Handling is intuitive and responsive. You’ll notice how easily it tracks in a straight line and how naturally it reacts to throttle changes. Its aluminum build provides enough flexibility to absorb light impacts, helping you avoid costly repairs if you graze shallow water. The glossy black finish keeps it looking sharp while fighting corrosion season after season. Maintenance is simple, performance is consistent, and the overall ride just feels... right.

Why is this prop a strong choice vs. alternatives?

Not every prop needs to be stainless steel to perform like a champ. The Quicksilver Black Diamond line was built for everyday boaters who want Mercury-engineered quality without the hefty price tag. It is a dependable, easy-to-maintain propeller that balances performance with practicality.

Compared to other aluminum options, it stands out for its precision casting and consistent pitch accuracy, both of which improve efficiency and fuel economy. The included rubber hub also absorbs shock and reduces vibration for a smoother ride. For small-boat owners looking for reliability and ease of use, this propeller checks every box — it’s tough, versatile, and built to deliver solid, real-world performance.

FAQ Section

Q1: Which Mercury engines does the Quicksilver Black Diamond 8.9" x 7.5" Propeller fit?

It’s designed for Mercury FourStroke outboard engines in the 8–9.9 horsepower range (2005 and newer). It also works with select Mariner models using the same hub design.

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

This model offers a great blend of strength, balance, and value. It’s lightweight yet durable, providing smooth acceleration and strong grip in a wide range of water conditions.

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

If you’re running a Mercury 8–9.9 HP FourStroke and want reliable acceleration with smooth, easy handling, the 8.9" x 7.5" pitch is likely ideal. Always confirm with your engine manual or a Mercury prop chart.

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

Yes. The high-gloss Phantom Black coating offers excellent corrosion resistance for both environments. Just rinse it after saltwater use to keep it in top condition.

Q5: What hub system does it use?

This propeller includes a rubber hub, which provides shock absorption and smooth performance while helping to protect your lower unit during shifting or impact.