Mercury – Quicksilver Black Diamond 3-Blade Aluminum Propeller | 12.75" Diameter x 21" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | QA2040X

Overview

There’s something about slipping out onto calm water with the right prop under you — that steady, confident hum that tells you your boat’s ready to move when you are. The Quicksilver Black Diamond has that feeling. It’s the kind of prop that doesn’t try too hard; it just works — every time. Smooth acceleration, solid grip, and the kind of reliability you appreciate after a few long weekends on the water. This propeller delivers the balance between performance and value that keeps your focus where it belongs — on the ride, not the wrench.

Key Features

• Diameter and Pitch: 12.75" diameter, 21" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design
• Material: Durable aluminum construction
• Finish: High-gloss Phantom Black coating for long-lasting shine
• Hub System: Compatible with the Quicksilver Flo Torq II hub system
• Design Detail: Balanced for smooth performance and reduced vibration on acceleration

Engine & Boat Compatibility

• Designed for Mercury outboards between 40–60 HP Command Thrust and 75–125 HP engines
• Works with boats up to 250 HP and speeds below 50 mph
• Compatible with Mercury, Mariner, and MerCruiser power setups (using the correct hub kit)
• Ideal for runabouts, pontoons, fishing boats, and light cruisers — anything that values a dependable, smooth-running prop

Performance Benefits

You’ll notice the difference the first time you push the throttle. The Black Diamond propeller gives you firm bite in the water, helping your boat lift cleanly onto plane without slipping or lagging. At cruising speeds, it runs quiet and steady, with just enough responsiveness to make small steering corrections feel effortless.

Its aluminum construction makes it forgiving — a small bump against an unseen sandbar won’t ruin your weekend. The finish not only looks sharp but also helps resist corrosion, making cleanup a breeze after a salty day offshore. Whether you’re easing through a no-wake zone or chasing open water, this prop feels smooth, predictable, and confident.

Why is this prop a strong choice vs. alternatives?

• Genuine Mercury quality built to factory standards — the same level of precision used in new Mercury and Mariner engines.
• Cost-effective without compromise, delivering strong, reliable performance at a fraction of the cost of stainless steel.
• Low-maintenance design that’s easy to clean, repair, and replace when needed.
• Versatile fit — thanks to the Flo Torq II hub system, it’s a direct match for a wide range of engine brands.
• Real-world durability, proven by boaters who’ve logged countless hours running this prop without drama or surprises.

If you’re looking for a propeller that won’t let you down — something that’s as practical as it is capable — the Black Diamond is the go-to choice. It’s what experienced boaters keep as their trusted standard.

FAQ Section

Q1: Which Mercury engines does the Quicksilver Black Diamond 12.75 x 21 fit?

It fits Mercury outboards from 40–60 HP Command Thrust and 75–125 HP models, along with other compatible setups using the Quicksilver Flo Torq II hub system.

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

The Black Diamond stands out for its blend of durability, affordability, and smooth performance. It’s built with the same attention to balance and finish as higher-end props but at a price that makes sense for everyday boaters.

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

If your boat’s top speed is under 50 mph and your engine falls within the 40–125 HP range, this 21-pitch setup typically offers strong acceleration and steady cruising. Always check your owner’s manual or consult a Mercury prop chart for exact fit.

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

Absolutely. Its high-gloss Phantom Black finish provides excellent corrosion resistance, making it suitable for either environment.

Q5: What hub system does it use?

It uses the Quicksilver Flo Torq II hub system, allowing you to swap or service it easily across compatible engine types.