Mercury – Black Max 3-Blade Aluminum Propeller | 13.25" Diameter x 17" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 77344A45

Overview

Every boater knows that dependable performance is what makes time on the water delightful. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77344A45) delivers that steady, trustworthy feel that’s made it a favorite among weekend boaters and pros alike. It’s the kind of prop you install once and forget about it simply does its job with quiet confidence. You’ll feel it the moment your boat lifts onto plane, handles a turn with precision, or glides smoothly back toward the dock at sunset. Reliable, responsive, and built to last, this prop brings out the best in your outboard.

Key Features

• Diameter & Pitch: 13.25" diameter x 17" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for balanced performance and smooth power delivery
• Material: Patented Mercalloy aluminum alloy for strength and flexibility under impact
• Finish: Mercury Phantom Black glossy enamel for long-lasting corrosion resistance
• Hub System: Includes Flo-Torq II Hub Kit 835257K1 for drivetrain protection and easy replacement
• Design Details: Engineered for consistent thrust, efficient lift, and vibration-free performance

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
• Ideal for runabouts, fishing boats, small cruisers, and pontoons that demand dependable power and control
• Perfect for boaters seeking a balance of acceleration, top-end speed, and steady handling across varied conditions

Performance Benefits

Push the throttle, and you’ll immediately notice how confidently the Black Max 77344A45 grabs the water. The acceleration feels clean and responsive, with just enough lift to help your boat find its sweet spot on plane. Once you’re cruising, it’s smooth and quiet, with minimal vibration through the helm. Whether you’re pulling into a turn or cruising straight across open water, the prop stays planted and predictable.

Mercury’s Mercalloy aluminum construction gives this prop a unique advantage it’s strong enough to handle years of use yet flexible enough to absorb minor impacts that would damage stiffer props. And with the Phantom Black enamel finish, corrosion and wear don’t stand a chance. It’s built for long seasons of hard use, whether in freshwater lakes, river channels, or saltwater bays. Easy to clean, easy to maintain, and always ready to perform this is the kind of prop that keeps your weekends worry-free.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Built by Mercury’s own engineers, the Black Max 77344A45 offers the same precision, reliability, and balance as the company’s legendary engines.

• Reliable and easy to maintain: Simple to install and dependable season after season, this propeller is designed for effortless performance and minimal upkeep.

• Cost-effective vs. stainless: Get premium Mercury performance without the stainless-steel price; it's durable, efficient, and built for real-world boating.

• Versatile fit across multiple setups: Works beautifully across a wide range of Mercury outboards, making it a practical and adaptable choice for most boaters.

FAQ Section

Q1: Which Mercury engines does the Black Max 77344A45 fit?

It’s designed 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 uses Mercury’s proprietary Mercalloy aluminum, giving it an ideal balance of durability and flexibility. It also includes the Flo-Torq II Hub System, which protects your drivetrain from impact-related damage.

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

A 17-pitch prop is a great middle ground for balanced acceleration and speed. If you’re upgrading or replacing, check your current prop’s markings or consult your manual to confirm the right fit.

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

Yes. The Phantom Black enamel finish resists corrosion in all water types, ensuring long-term protection and smooth performance wherever you boat.

Q5: What hub system does it use?

It includes the Flo-Torq II Hub Kit 835257K1, which absorbs shock, reduces vibration, and safeguards your prop shaft during unexpected impacts.