Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 10.7" Diameter x 10" Pitch | Right-Hand Rotation | Three-Blade Design | Aluminum | Black Finish | 8M0185642

Overview

There’s something special about those mornings when the water’s calm and your boat responds exactly how you want it to. That’s the feeling the Quicksilver Black Diamond 3-Blade Aluminum Propeller ( 8M0185642) delivers every time you throttle up. It’s smooth, predictable, and built to perform—whether you’re easing out of the marina or opening up across open water. Boaters love this prop because it feels dependable. It’s the kind of hardware you can count on season after season without fuss or frustration.

Key Features

• Diameter and Pitch: 10.7" Diameter x 10" Pitch.
• Rotation: Right-Hand.
• Blade Count: Three-Blade Design.
• Material: Durable Aluminum Construction.
• Finish: High-Gloss Phantom Black Finish for corrosion resistance and a sleek look.
• Hub System: Includes rubber hub, compatible with the Quicksilver Flo-Torq II Hub Kit.
• Design Details: High-quality casting provides balance, smooth acceleration, and easy maintenance.

Engine & Boat Compatibility

• Designed for Mercury FourStroke 25–30 horsepower engines (2022 and newer with 2.17:1 gear ratio)
• Suitable for small to mid-sized outboards up to 250 horsepower
• Works well with select Mariner and MerCruiser power setups using the proper hub kit
• Ideal for runabouts, fishing boats, pontoons, and light utility boats
• Recommended for boats with a top speed under 50 miles per hour

Performance Benefits

You’ll notice the difference the moment your prop bites into the water. The Black Diamond gives you a clean, steady push that feels natural no jerks, no chatter, just smooth thrust that builds confidence at the helm. Acceleration feels strong but controlled, helping your boat get on plane quickly without stressing the engine. Once you’re cruising, it holds speed beautifully and stays quiet through turns or choppy conditions.

Because it’s made from high-quality aluminum, it offers a forgiving balance between performance and protection. It’s tough enough to take the occasional bump but light enough to deliver efficient performance. The Phantom Black finish resists corrosion and stays easy to clean—just a quick rinse and wipe-down after each outing. Whether you’re out fishing at dawn or towing kids on a tube in the afternoon, this prop keeps things simple and dependable.

Why This Prop Is a Strong Choice vs. Alternatives

The Quicksilver Black Diamond Propeller is a favorite among weekend boaters serious anglers alike because it blends practicality with proven performance. It’s made to Mercury’s exact standards, so you’re getting true Mercury OEM quality without the premium price tag. Maintenance is minimal, performance is reliable, and the value is hard to beat. Compared to stainless steel props, this one’s more forgiving on impact, easier to repair, and a fraction of the cost—perfect for anyone who wants solid, everyday reliability.

If you’ve been running an older or worn aluminum prop, this is an easy upgrade that brings back the smooth, responsive handling you remember. It’s the prop that just works—trip after trip, tide after tide.

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 (2022 and newer models with a 2.17:1 gear ratio).

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

The Black Diamond combines solid Mercury engineering with durable aluminum construction, offering reliable everyday performance at an affordable price.

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

The 10.7" x 10" pitch works best for smaller outboards that need quick acceleration and steady cruising. It’s ideal if your boat typically runs below 50 miles per hour.

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

Yes. Its high-gloss Phantom Black finish resists corrosion in both saltwater and freshwater conditions with minimal upkeep.

Q5: What hub system does it use?

This prop includes a rubber hub and is compatible with the Quicksilver Flo-Torq II Hub System, which helps cushion shifts and reduce vibration for smoother operation.