Mercury – Black Max 3-Blade Extra Cup Aluminum Propeller | 16" Diameter x 13" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 78114CP1

Overview

There’s something special about the first few seconds when you open up the throttle and feel your boat surge forward, steady, confident, and ready to run. That’s the kind of moment the Mercury Black Max 3-Blade Extra Cup Aluminum Propeller (Part Number 78114CP1) delivers every time. It’s smooth where it should be, strong when it needs to be, and forgiving when the water throws a surprise your way. If you’ve spent your weekends chasing sunrise launches and sunset rides, you’ll recognize that familiar Mercury balance of performance and dependability. This isn’t just another prop it’s the one you trust to keep you on the water, season after season.

Key Features

• Diameter & Pitch: 16" diameter x 13" pitch for balanced performance and lift
• Rotation: Right-Hand for standard outboard and sterndrive setups
• Blade Count: 3-Blade design for steady cruising and efficient thrust
• Material: Patented Mercalloy aluminum alloy—strong yet flexible under stress
• Finish: Mercury Phantom Black enamel for long-term corrosion protection
• Hub System: Includes Flo-Torq II Hub Kit 835257K1 to cushion drivetrain from impact
• Design Details: Extra Cup blade geometry adds grip and lift—especially effective for pontoon boats and heavier hulls

Engine & Boat Compatibility

• Compatible with Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards
• Fits Mercury and Mariner 135–300 HP TwoStroke and FourStroke outboards
• Works with MerCruiser Alpha One and Bravo One sterndrives
• Ideal for pontoons, fishing boats, runabouts, bowriders, and light cruisers

Performance Benefits

The Mercury Black Max 78114CP1 propeller doesn’t just move your boat—it enhances how it feels on the water. The Extra Cup design gives the blades more bite, improving lift and reducing slip when you need that extra push. You’ll notice the grip in tight turns and the smooth, consistent plane at cruising speed.

It’s also a forgiving propeller. The Mercalloy aluminum construction can flex slightly on light impact, helping prevent cracks or breaks that might sideline your weekend plans. At speed, the prop remains quiet and steady, with less vibration than typical aluminum models. Whether you’re idling through the marina or opening it up across open water, it maintains a confident, composed feel that inspires trust every time you hit the throttle.

Why is this prop a strong choice vs. alternatives?

• Balanced value and performance: The Mercury Black Max Extra Cup offers the smooth handling and reliable performance of a premium propeller—without the high cost of stainless steel.

• Engineered by Mercury experts: Designed by the same engineers behind Mercury’s world-class engines, ensuring precise balance, performance, and long-term dependability.

• Low maintenance, easy installation: Built for boaters who prefer more time on the water and less time in the shop. Simple to maintain and install.

• Durable and practical: Crafted from Mercalloy aluminum alloy, it’s tough enough for everyday use while staying forgiving under stress or light impacts.

• Ideal middle ground: Delivers the reliability of stainless steel with the affordability and flexibility of aluminum, making it the smart, real-world choice for most boaters.

• Consistent results: Season after season, this prop just works, smooth, steady, and ready every time you hit the throttle.

FAQ Section

Q1: Which Mercury engines does the Black Max 78114CP1 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 Extra Cup blade design provides more lift and grip, making it ideal for pontoons or heavier boats. Its Mercalloy aluminum alloy also offers strength with a bit of give for impact resistance.

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

The 13-pitch setup works best for balanced performance—strong acceleration with stable midrange cruising. Check your current prop size or consult your owner’s manual for the ideal match.

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

Yes. The Phantom Black enamel finish offers excellent corrosion protection, keeping your prop looking sharp and performing well in any water type.

Q5: What hub system does it use?

It comes equipped with the Flo-Torq II Hub Kit 835257K1, which helps absorb shock from sudden impacts and minimizes vibration for smoother, quieter rides.