Mercury – Black Max 3-Blade Aluminum Propeller | 13.75" Diameter x 15" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 77342A45

Overview

Every boater recognizes the thrilling moment when their boat lifts onto plane, smooth and sure, with effortless and controlled power. That’s what you’ll experience with the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 77342A45). It’s the kind of prop that makes boating simple, reliable, and enjoyable. You’ll feel it in how quickly the throttle responds, how steady the boat feels in turns, and how confidently it glides across open water. It’s smooth, predictable, and built to earn your trust every trip.

Key Features

• Diameter & Pitch: 13.75" diameter x 15" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for balanced acceleration and lift
• Material: Patented Mercalloy aluminum alloy, strong yet flexible for lasting performance
• Finish: Mercury Phantom Black glossy enamel for superior corrosion protection
• Hub System: Includes Flo-Torq II Hub Kit 835257K1 for drivetrain safety and impact absorption
• Design Details: Engineered for responsive grip, smooth acceleration, and vibration-free cruising

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
• Excellent for pontoons, fishing boats, and small cruisers
• Perfect for boaters seeking a reliable balance of power, speed, and efficiency

Performance Benefits

The Black Max 77342A45 delivers a boating experience that feels clean, stable, and connected. Push the throttle, and you’ll notice how quickly it grips the water, no slipping, no lag, just smooth, responsive thrust. It’s the kind of performance that lets you focus on the ride rather than worrying about the equipment. The prop provides your boat with the lift it needs to get on plane quickly, while maintaining steady control through tight turns or choppy water.

Mercury’s Mercalloy aluminum construction gives this prop both strength and flexibility, allowing it to withstand the rigors of everyday boating while forgiving minor impacts. Its Phantom Black enamel finish resists corrosion and keeps the prop looking sharp season after season. Whether you’re running saltwater flats, inland lakes, or calm bays, it performs with consistency and smoothness you can feel in every run.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Designed by the same engineers who build Mercury’s engines, this propeller delivers factory-matched precision and trusted reliability.

• Reliable and easy to maintain: Built for boaters who want smooth, dependable performance with minimal upkeep, so you can focus on enjoying your time on the water.

• Cost-effective vs. stainless: Offers impressive performance and durability at a fraction of the cost of stainless-steel props, without sacrificing quality or handling.

• Versatile fit across multiple setups: Works seamlessly across a wide range of outboards and sterndrives, making it a practical and adaptable choice for different boating styles.

FAQ Section

Q1: Which Mercury engines does the Black Max 77342A45 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 is made from Mercury’s patented Mercalloy aluminum alloy, which is lightweight, durable, and flexible enough to handle everyday use. It also includes the Flo-Torq II Hub System to protect your drivetrain and reduce vibration.

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

A 15-pitch prop is ideal for those who want quick acceleration, efficient midrange power, and reliable cruising speed. Compare with your current prop markings or consult your owner’s manual for confirmation.

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

Yes. Its Phantom Black enamel finish provides corrosion resistance and maintains its performance in any water environment.

Q5: What hub system does it use?

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