Mercury – Black Max 3-Blade Aluminum Propeller | 12.5" Diameter x 23" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 77350A45

Overview

 There’s nothing like that feeling when your boat comes alive under your hand the moment the throttle opens up, the hull lifts cleanly, and the water turns to glass beneath you. That’s the kind of confidence you get with the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77350A45). Smooth, strong, and reliable, it’s the prop you can count on every single trip. You’ll feel the difference in how your boat grips the water, how steady it runs, and how effortless it is to control. It’s not just about power it’s about trust.

Key Features

• Diameter & Pitch: 12.5" diameter x 23" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for efficient lift and steady thrust
• Material: Patented Mercalloy aluminum alloy—strong yet flexible enough to handle light impacts
• Finish: Mercury Phantom Black glossy enamel for corrosion protection and a sharp appearance
• Hub System: Includes Flo-Torq II Hub Kit 835257K1 for shock absorption and drivetrain protection
• Design Details: Engineered for consistent grip, responsive acceleration, and quiet operation

Engine & Boat Compatibility

• Designed for Mercury and Mariner 40–60 HP BigFoot/Command Thrust (all years)
• Fits Mercury and Mariner 75–125 HP (1978 and newer) outboards
• A great match for runabouts, fishing boats, light cruisers, and pontoons
• Ideal for boaters who value higher top-end speed and smooth cruising performance

Performance Benefits

When you throttle up, the Black Max 77350A45 doesn’t just push—it pulls with precision. The 23-pitch design gives you a perfect mix of speed and responsiveness, letting your boat glide across the water with less drag and more control. It bites into turns with confidence, offering a clean grip that keeps you in command.

Built from Mercury’s Mercalloy aluminum, this propeller handles years of use with strength and flexibility. It’s tough enough to take the knocks of everyday boating while staying light and efficient. And thanks to its Phantom Black enamel finish, corrosion is never a concern—whether you’re running freshwater lakes or saltwater bays. With smooth handling and low vibration, you’ll enjoy longer, quieter rides and more time focusing on what really matters—being on the water.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Built by the same Mercury engineers who design their legendary engines, ensuring precise fit, balance, and long-lasting reliability.

• Reliable and easy to maintain: Simple to install, low-maintenance, and designed for consistent performance season after season.

• Cost-effective vs. stainless: Delivers dependable power and smooth handling without the higher cost of stainless-steel options.

• Versatile fit across multiple setups: Compatible with a wide range of Mercury outboards, making it a flexible, go-to prop for many boat types and conditions.

FAQ Section

Q1: Which Mercury engines does the Black Max 77350A45 fit?

It’s built for 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 is made from Mercury’s patented Mercalloy aluminum—light, durable, and flexible enough to handle minor impacts. It also includes the Flo-Torq II Hub System, which protects your drivetrain from shock.

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

A 23-pitch prop is ideal for boaters who want more top-end speed and efficient cruising performance. Compare it to your current prop or check your owner’s manual for guidance.

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

Yes. The Phantom Black enamel finish resists corrosion and keeps performance consistent across all water conditions.

Q5: What hub system does it use?

It includes the Flo-Torq II Hub Kit 835257K1, designed to absorb shock, reduce vibration, and safeguard your prop shaft from impact damage.