Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 10.5" Diameter x 13" Pitch | Right-Hand Rotation | Three-Blade Design | Aluminum | Black Finish | 8M0185645

Overview

There’s nothing like the feeling of being out on the water when your boat runs just the way it should steady, smooth, and responsive the Quicksilver Black Diamond 3-Blade Aluminum Propeller (8M0185645) delivers that kind of dependable performance every time. It’s built for boaters who appreciate consistency more than flash those who just want their prop to work, day after day, without fuss. You’ll feel its balance the moment you hit the throttle: a clean bite, a confident lift, and that quiet assurance that everything beneath you is working in perfect harmony.

Key Features

• Diameter and Pitch: 10.5" Diameter x 13" Pitch.
• Rotation: Right-Hand.
• Blade Count: Three-Blade Design.
• Material: Durable Aluminum Construction for strength and reliability.
• Finish: High-Gloss Phantom Black Finish for corrosion resistance and a polished, lasting look.
• Hub System: Includes rubber hub; compatible with the Quicksilver Flo-Torq II Hub Kit.
• Design Details: Precision-cast for balance, smooth performance, and long-term durability.

Engine & Boat Compatibility

• Designed for Mercury FourStroke 25–30 horsepower outboards (2022 and newer, 2.17:1 gear ratio)
• Works with select Mariner and MerCruiser engine setups using the appropriate hub system.
• Suitable for small to mid-sized outboards up to 250 horsepower
• Ideal for runabouts, fishing boats, pontoons, and light utility boats
• Recommended for boats with top speeds below 50 miles per hour

Performance Benefits.

When your prop and engine are perfectly matched, you can feel it in every movement of the boat. The Black Diamond 10.5" x 13" Pitch Propeller gives you that connection quick lift, smooth thrust, and effortless cruising. As you ease into the throttle, the prop grabs the water cleanly, building power without hesitation. It’s the kind of acceleration that feels controlled yet assertive, getting you on plane fast and keeping your ride steady through turns or chop.

At cruising speeds, it’s quiet and predictable. The boat tracks smoothly, and you’ll notice less vibration thanks to its well balanced aluminum design. This prop isn’t just about performance. it’s about peace of mind. The durable aluminum absorbs shock from minor bumps, while the Phantom Black finish keeps corrosion at bay in both freshwater and saltwater After a long day, cleanup is easy just rinse, dry, and you’re ready for the next trip.

This prop was made for real-world boaters the kind who know their waters, take care of their gear, and appreciate equipment that simply works. It doesn’t demand attention; it just delivers performance that feels right every time you launch.

Why This Prop Is a Strong Choice vs. Alternatives

The Quicksilver Black Diamond Propeller continues to be a favorite because it offers Mercury quality at a price that makes sense. It’s built to Mercury OEM standards, giving you reliable engineering without the premium cost of stainless steel. Aluminum may not have the same shine or stiffness, but it’s easier to maintain, more forgiving if you strike something, and much more affordable to repair or replace.

Its versatility makes it a smart choice for boaters who want to keep things simple—one prop that performs across different conditions and setups. The Black Diamond’s balance between lift, grip, and smooth cruising makes it the kind of prop you’ll trust season after season. It’s not flashy, but it’s dependable—and that’s what most boaters really need.

FAQ

Q1: Which Mercury engines does the Quicksilver Black Diamond Propeller fit?

It’s designed for Mercury and Mariner FourStroke outboards between 25 and 30 horsepower, built from 2022 onward with a 2.17:1 gear ratio.

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

It combines Mercury’s precision engineering with durable aluminum construction, offering reliable, everyday performance at a practical price.

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

The 10.5" x 13" pitch is ideal for smaller outboards needing a blend of fast lift, efficient cruising, and steady handling at moderate speeds.

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

Yes. The Phantom Black finish resists corrosion in both environments and stays easy to maintain.

Q5: What hub system does it use?

It includes a rubber hub and works with the Quicksilver Flo-Torq II Hub System, which helps cushion shifts, reduce vibration, and protect your drivetrain.