Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 8.9" Diameter x 8.5" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | High-Gloss Black Finish | QA2158R

Overview

Ask any boater who’s spent time on the water, and they’ll tell you — when your prop’s right, the whole boat just feels better. There’s that quiet hum, easy steering, and that satisfying, steady push forward each time you give it a bit of throttle That’s what you get with the Quicksilver Black Diamond 3-Blade Aluminum Propeller. It’s smooth, reliable, and built for the kind of boaters who care more about performance and balance than fancy marketing talk. Whether you’re heading out early to chase fish or just taking a quiet cruise at sunset, this prop delivers the control and consistency you’ll come to trust.

Key Features

• Diameter & Pitch: 8.9" Diameter x 8.5" Pitch
• Rotation: Right-Hand
• Blade Count: 3 Blades
• Material: Durable aluminum construction designed for strength and long-term reliability
• Finish: High-gloss Phantom Black coating that resists corrosion and keeps a clean look
• Hub System: Rubber hub included for smooth, quiet operation
• Design Details: Precision-cast for balanced performance and reduced vibration

Engine & Boat Compatibility

• Designed for Mercury FourStroke outboard engines in the 8–9.9 horsepower range (2005 and newer)
• Compatible with Mariner engines that share the same hub design
• Ideal for small fishing boats, inflatables, dinghies, and lightweight skiffs
• Recommended for boats with moderate loads and top speeds under 50 mph
• Works well in both freshwater and saltwater environments

Performance Benefits

What sets this prop apart is how it feels in real-world use. Acceleration is quick and confident — you will feel the boat rise cleanly and respond without hesitation. The 3-blade design provides a steady, predictable pull through the water, making low-speed control and docking smooth and stress-free. At cruising speed, it holds grip beautifully, keeping vibration low and steering light.

Its aluminum build offers that perfect balance of strength and forgiveness. It’s rugged enough to take daily use but flexible enough to handle a bump or scrape without major damage. The Phantom Black finish isn’t just for looks — it holds up against salt, sun, and freshwater exposure, wiping clean after a long day on the water. This Mercury propeller is built to perform season after season, no matter what kind of boating you love.

Why is this prop a strong choice vs. alternatives?

For most everyday boaters, stainless steel is more than they need. The Quicksilver Black Diamond line gives you the same Mercury precision engineering in a lighter, more cost-effective aluminum design. It is easy to maintain, performs beautifully, and fits a wide range of engines — all without breaking the bank.

This prop’s smooth acceleration and consistent thrust make it ideal for smaller boats that need dependable performance without fuss. It’s durable, versatile, and backed by Mercury’s trusted manufacturing. Think of it as your go-to workhorse — simple, steady, and always ready to run.

FAQ Section

Q1: Which Mercury engines does the Quicksilver Black Diamond 8.9" x 8.5" Propeller fit?

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

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

It combines Mercury’s precise engineering with a durable, lightweight aluminum design. You get smooth thrust, consistent handling, and easier maintenance than stainless steel alternatives.

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

If your engine operates within its recommended RPM range at wide-open throttle and you want smooth, reliable thrust for a smaller boat, the 8.9" x 8.5" pitch is likely ideal. Check your manual to confirm.

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

Yes. The high-gloss Phantom Black coating provides lasting protection from corrosion in either environment. Just rinse after saltwater use for best results.

Q5: What hub system does it use?

This propeller includes a rubber hub, which absorbs shock, reduces vibration, and ensures smoother engagement when shifting gears.