Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 9" Diameter x 7" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Black Finish | QA2124

Overview

There’s nothing like the feeling of pushing off from shore, hearing your outboard hum, and watching the water curl behind your boat. The Quicksilver Black Diamond 9" x 7" Aluminum Propeller is built for those easygoing days — the ones when reliability and simplicity matter most. It’s a small prop with a big reputation, trusted by boaters who just want a smooth ride, easy control, and confidence that it’ll get them home every time. Designed with Mercury’s quality craftsmanship, this prop performs with quiet consistency and a touch of finesse that makes every trip feel effortless.

Key Features

• Diameter and Pitch: 9" diameter, 7" pitch
• Rotation: Right-Hand
• Blade Count: 3 blades
• Material: Cast aluminum
• Finish: High-gloss Phantom Black coating
• Hub System: Rubber hub included
• Design Details: Precision-balanced casting designed for boats up to 250 horsepower and speeds under 50 mph

Engine & Boat Compatibility

• Designed for 6–15 horsepower Mercury outboard engines (2005 and newer; excluding 8–9.9 HP FourStroke models)
• Also suitable for small fishing boats, dinghies, tenders, and light aluminum craft
• Works with Mariner and other compatible power setups that use similar hub configurations
• Ideal for slow-speed control, quiet operation, and easy maintenance

Performance Benefits

Don’t let its compact size fool you — this prop delivers more than enough punch for smaller boats. You’ll feel that immediate bite as it digs into the water, giving you steady acceleration and precise control, even when maneuvering in tight spaces or around docks. Once you’re underway, the three-blade design keeps the boat gliding smooth, with consistent grip and a natural feel at the helm.

This Mercury propeller also shines in its quiet, balanced operation. You won’t deal with harsh vibration or unpredictable pull; instead, you’ll get a calm, steady response as you guide your boat across the surface. The Phantom Black finish not only looks sleek but resists salt, sand, and scuffs, making maintenance simple. A quick rinse and light polish, and it’s ready for your next trip.

If you happen to bump a rock or graze a sandbar — no need to panic. The aluminum construction is forgiving and repairable, saving you from costly replacements and keeping you on the water longer.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Engineered to the same high standards as Mercury’s factory props, ensuring dependable performance trip after trip.
• Low-maintenance durability: The Phantom Black finish helps fight corrosion while staying easy to clean and maintain.
• Affordable reliability: A cost-effective alternative to stainless steel, offering great value for smaller outboards.
• Smooth handling: Designed for balanced, predictable performance whether you’re trolling, cruising, or docking.
• Versatile and dependable: Works across multiple small-engine setups with included rubber hub for a simple installation.

The Black Diamond 9" x 7" is proof that great performance doesn’t have to come with a big price tag. It’s perfect for boaters who want to spend more time on the water and less time worrying about their gear.

FAQ

Q1: Which Mercury engines does the Quicksilver Black Diamond 9" x 7" fit?

It’s made for 6–15 horsepower Mercury outboard engines (2005 and newer), except for the 8–9.9 HP FourStroke models.

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

It’s lightweight, durable, and perfectly balanced for small engines — offering steady thrust, easy handling, and smooth acceleration without excess vibration.

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

If you’re running a Mercury 6–15 HP outboard and want reliable control for smaller craft, the 9" x 7" pitch gives the ideal mix of thrust and maneuverability.

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

Yes. The high-gloss Phantom Black coating resists corrosion and scuffs in both environments. Just rinse after saltwater use to keep it in top shape.

Q5: What hub system does it use?

This model includes a rubber hub pre-installed for straightforward installation and solid vibration absorption.