Mercury – Black Max 3-Blade Aluminum Propeller | 14" Diameter x 13" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 77340A45

Overview

There’s something about dependable performance that makes boating feel effortless. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77340A45) delivers that feeling every time you leave the dock. It’s steady, responsive, and built to perform without drawing attention to itself. You’ll notice how quickly your boat gets on plane, how cleanly it slices through turns, and how confidently it holds speed across open water. It’s not flashyit’s just right.

Key Features

• Diameter & Pitch: 14" diameter x 13" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for balanced thrust and smooth handling
• Material: Patented Mercalloy aluminum alloy for strength and flexibility
• Finish: Mercury Phantom Black glossy enamel for corrosion protection
• Hub System: Flo-Torq II Hub Kit 835257K1 helps protect the drivetrain from impact damage
• Design Details: Precision-shaped blades for clean lift, consistent grip, and low vibration

Engine & Boat Compatibility

• Works with Mercury and Mariner 40–60 HP BigFoot/Command Thrust (all years)
• Fits Mercury and Mariner 75–125 HP (1978 and newer) outboards
• Ideal for fishing boats, pontoons, and runabouts that need reliable midrange power
• A great choice for boaters who want strong acceleration and steady control

Performance Benefits

The Black Max 77340A45 propeller brings your boat to life. Push the throttle, and it grips the water instantly—no slip, no lag, just smooth, controlled acceleration. Once you’re moving, the boat stays balanced and stable, even when the water gets choppy. It’s the kind of prop that lets you focus on the ride, not the hardware.

Mercury’s Mercalloy aluminum gives this prop its toughness and resilience. It can take minor impacts without cracking and holds up beautifully through long seasons on the water. The Phantom Black enamel finish keeps corrosion away and adds a clean, polished look. Whether you’re running saltwater flats or inland lakes, this prop stays efficient, durable, and dependable.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Designed and engineered by Mercury, the same team behind their industry-leading engines, ensuring precise fit and consistent performance.

• Reliable and easy to maintain: Built for everyday use, the Black Max 77340A45 handles long seasons on the water with minimal upkeep, just reliable, steady power.

• Cost-effective vs. stainless: Offers dependable performance and strength without the higher price tag of stainless-steel props, making it a smart, real-world value.

• Versatile fit across multiple setups: Works seamlessly with a wide range of Mercury outboards and sterndrives, giving boaters flexibility and confidence in any condition.

FAQ Section

Q1: Which Mercury engines does the Black Max 77340A45 fit?

It fits Mercury and Mariner 40–60 HP BigFoot/Command Thrust (all years) and 75–125 HP (1978 and newer) outboards.

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

The Black Max uses Mercury’s Mercalloy aluminum alloy—tough, flexible, and impact-resistant. It also includes the Flo-Torq II Hub System for smoother performance and drivetrain protection.

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

The 13-pitch design works best for balanced acceleration and power. Check your current prop or owner’s manual to confirm fit.

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

Yes. The Phantom Black finish prevents corrosion, keeping performance smooth in any water condition.

Q5: What hub system does it use?

It comes with the Flo-Torq II Hub Kit 835257K1, which cushions impacts, reduces vibration, and protects the prop shaft.