Mercury – Black Max 3-Blade Aluminum Propeller | 16" Diameter x 13" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 78114A45

Overview

There’s nothing quite like the moment your boat jumps onto plane, steady, confident, and ready for open water. That’s the feeling the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 78114A45) delivers every time you hit the throttle. Built to balance strength, smoothness, and reliability, it’s a prop that feels like an extension of your boat. You’ll notice how easily it handles turns, how quietly it glides through chop, and how dependable it feels after a long day on the water. It’s not just engineered—it’s trusted.

Key Features

• Diameter & Pitch: 16" diameter x 13" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for strong lift, balanced thrust, and steady cruising
• Material: Patented Mercalloy aluminum alloy—tough yet forgiving under stress
• Finish: Mercury Phantom Black glossy enamel for long-term corrosion resistance
• Hub System: Flo-Torq II Hub Kit 835257K1 helps protect drivetrain components from shock and impact
• Design Details: Precision-balanced blades designed for smooth acceleration and reduced vibration

Engine & Boat Compatibility

• Designed for Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards
• Compatible with Mercury and Mariner 135–300 HP TwoStroke and FourStroke outboards
• Fits MerCruiser Alpha One and Bravo One sterndrives
• Perfect for runabouts, fishing boats, bowriders, pontoons, and light cruisers that demand reliable performance and smooth handling

Performance Benefits

The Mercury Black Max 78114A45 propeller delivers performance that feels effortless but powerful. When you open the throttle, it grips the water immediately, getting your boat up on plane with steady, responsive thrust. Once cruising, it maintains balance and speed with minimal vibration, giving you that smooth, easy feel that makes long rides a pleasure.

You’ll appreciate how this prop handles transitions—from slow trolling to quick bursts of speed—with total control. The Mercalloy aluminum construction ensures strength without sacrificing flexibility, helping the blades absorb minor impacts instead of cracking. Its Phantom Black enamel finish keeps corrosion at bay, so whether you’re boating on freshwater lakes or saltwater bays, your prop stays sharp and efficient. Combined with the Flo-Torq II Hub System, you get reduced vibration, better durability, and quieter performance—everything that makes a day on the water simply better.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Designed and built by Mercury’s own engineers, ensuring the same precision and dependability that define their legendary engines.

• Reliable and easy to maintain: Built for boaters who value performance without the hassle, this prop stays smooth and dependable season after season.

• Cost-effective vs. stainless: Offers premium-level performance and durability without the higher cost of stainless steel alternatives.

• Versatile fit across multiple setups: Ideal for a wide range of outboards and boating styles, from fishing trips to relaxed weekend cruising.

FAQ Section

Q1: Which Mercury engines does the Black Max 78114A45 fit?

It fits Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards, 135–300 HP TwoStroke and FourStroke outboards, and MerCruiser Alpha One and Bravo One sterndrives.

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

The Black Max is built from Mercury’s exclusive Mercalloy aluminum alloy—durable yet flexible—and comes equipped with the Flo-Torq II Hub System to protect the drivetrain and reduce vibration.

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

The 13-pitch design is ideal for balanced performance—offering strong acceleration with reliable cruising speed. Check your current prop markings or owner’s manual for best-fit guidance.

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

Yes. The Phantom Black enamel finish provides superior corrosion protection, keeping the prop performing smoothly in any water environment.

Q5: What hub system does it use?

It includes the Flo-Torq II Hub Kit 835257K1, which cushions impacts, minimizes vibration, and protects your prop shaft from sudden shock.