Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 8.7" Diameter x 5" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | High-Gloss Black Finish | QA2148R

Overview

There is something incredibly satisfying about a boat that responds instantly — the kind that glides across calm water with smooth precision and doesn’t make you second-guess your throttle. The Quicksilver Black Diamond 3-Blade Aluminum Propeller captures that feeling perfectly. It’s dependable, balanced, and easy to trust, even after countless trips out on the water. Whether you’re exploring quiet coves or heading out for a full day of fishing, this prop helps your small boat perform like it should — smooth starts, steady control, and a quiet confidence that makes boating feel effortless.

Key Features

• Diameter & Pitch: 8.7" Diameter x 5" Pitch
• Rotation: Right-Hand
• Blade Count: 3 Blades
• Material: Aluminum construction for strength and reliability
• Finish: High-gloss Phantom Black coating resists corrosion and wear
• Hub System: Rubber hub included for simple installation and smooth operation
• Design Details: Precision-cast design provides balanced performance and minimal vibration

Engine & Boat Compatibility

• Designed for Mercury FourStroke outboard engines rated at 8–9.9 horsepower (2005 and newer)
• Perfect for small fishing boats, tenders, inflatables, and light-duty utility boats
• Compatible with Mercury and Mariner power setups that require 8–10 horsepower propellers
• Ideal for boats with moderate loads and top speeds under 50 mph

Performance Benefits

The first time you drop this prop in the water, you’ll feel it — that quick bite, the smooth lift, and the steady pull that tells you the boat’s ready to go. Acceleration feels natural, not forced. At cruising speed, it holds the water cleanly, giving you a steady line and quiet ride, even when conditions shift.

Its lightweight aluminum build adds just the right touch of forgiveness. If you ever tap a rock or slide through shallow sand, you won’t be facing a costly replacement. The glossy black finish holds up beautifully over time, resisting corrosion in both saltwater and freshwater. Whether you are trolling quietly or running across a calm bay, the Black Diamond 3-Blade makes your boat feel stable, confident, and connected to the water.

Why is this prop a strong choice vs. alternatives?

Not every boater needs a high-end stainless steel prop. For most of us, this Mercury propeller hits that sweet spot between performance and practicality. It is built with Mercury’s trusted engineering and designed to last, giving you consistent performance trip after trip. The included rubber hub makes installation simple, while the durable casting and smooth finish make upkeep a breeze.

It’s cost-effective without cutting corners — you get quality materials, dependable balance, and compatibility with the most common Mercury 8–9.9 horsepower setups. If you’re looking for a prop you can install and trust without overthinking it, this is it. Reliable, smooth, and made for real-world boating.

FAQ Section

Q1: Which Mercury engines does the Quicksilver Black Diamond 8.7" x 5" Propeller fit?

It’s made for Mercury FourStroke outboard engines in the 8–9.9 horsepower range (2005 and newer) and fits select Mariner models using the same specifications.

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

This model focuses on balance and reliability, offering smooth acceleration and steady handling in a lightweight, durable aluminum build. It’s affordable, easy to maintain, and built for smaller engines that still demand quality performance.

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

If your boat runs a Mercury 8–9.9 horsepower FourStroke and operates best at moderate speeds with light to medium loads, this 8.7" x 5" pitch prop is likely an excellent match. Always confirm using your owner’s manual or Mercury’s prop selection guide.

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

Yes. Its corrosion-resistant Phantom Black finish makes it perfectly suited for both environments. Just rinse it clean after saltwater use for longer life.

Q5: What hub system does it use?

This propeller includes a rubber hub, providing smooth engagement and easy installation right out of the box — no additional parts required.