Mercury – Black Max 3-Blade Aluminum Propeller | 10.125" Diameter x 15" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Glossy Phantom Black Finish | 73140A45

Overview

It’s a good feeling when your gear just does what it’s meant to—no fuss, no surprises, just that smooth, easy confidence every time you turn the key. That’s exactly what the Mercury Black Max 3-Blade Aluminum Propeller delivers.. It’s the kind of prop that makes boating feel natural, where everything just clicks the way it should. You’ll notice it the moment you throttle up—how cleanly it grabs the water, how balanced it feels in turns, how quietly it keeps you moving through chop. You could be idling out at sunrise or pushing full throttle through open water—either way, this prop stays calm, steady, and right where you need it.

Key Features

• Diameter and Pitch: 10.125" Diameter x 15" Pitch

• Rotation: Right-Hand

• Blade Count: 3 Blades

• Material: Mercury’s Patented Mercalloy Aluminum Alloy for strength and flexibility

• Finish: Glossy Phantom Black Enamel that resists corrosion and maintains its deep shine

• Hub System: Includes Flo-Torq Reflex Hub Kit 835257K12 to absorb vibration and protect your drivetrain

• Design Details: Tuned for strong lift, quick acceleration, and steady handling across variable speeds and conditions

Engine & Boat Compatibility

• Fits Mercury and Mariner 25–30hp FourStroke BigFoot/Command Thrust outboards

• Works with 30hp TwoStroke and 30hp FourStroke (2005 and earlier) engines

• Compatible with 40–60hp FourStroke models

• Ideal for fishing boats, small runabouts, pontoons, and utility boats needing dependable thrust and clean, smooth control

Performance Benefits

The Black Max 15-pitch prop delivers a strong, confident feel from the moment it hits the water. You’ll feel it hook up fast and lift your boat cleanly onto plane without lag or chatter. Acceleration is crisp, cruising is smooth, and the response is predictable—just what you want when wind and waves start to change.

That’s the beauty of Mercury’s Mercalloy aluminum. It’s tough enough to take on real-world boating—brushes with floating debris, the occasional shallow scrape—but it still has the right amount of flex to absorb minor bumps without cracking. The Flo-Torq Reflex Hub Kit plays its part too, softening vibration and protecting your motor’s drivetrain from shock or impact.

When the day’s done, upkeep couldn’t be easier. A quick rinse, a simple check, and you’re ready to go again. The Phantom Black enamel coating keeps its glossy look and shields against salt and freshwater corrosion, so your prop stays sharp and strong season after season.

Why is this prop is a strong choice vs. alternatives?

• Built by Mercury: Designed for a perfect fit and dependable performance on every trip.

• Tough Yet Forgiving: Built strong but flexible enough to handle minor bumps without issue.

• Smart Value: Delivers smooth, steady performance without the higher cost of stainless steel.

• Versatile Fit: Works beautifully across a wide range of small to mid-size outboards and boat styles.

• Proven Dependability: Trusted by boaters for its balance, lift, and lasting reliability year after year.

FAQ

Q1: Which Mercury engines does the Black Max 3-Blade Aluminum Propeller fit?

It fits Mercury and Mariner 25–30hp FourStroke BigFoot/Command Thrust, 30hp TwoStroke, 30hp FourStroke (2005 and earlier), and 40–60hp FourStroke outboards.

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

The Black Max is Mercury’s go-to all-around performer. It balances power, smoothness, and affordability, with the added benefit of the Flo-Torq Reflex Hub Kit for a quieter, more forgiving ride.

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

If you’re running a 25–60 horsepower Mercury outboard and want solid acceleration with efficient cruising speed, the 10.125" x 15" pitch setup is an excellent fit. Always confirm with your owner’s manual or local dealer to ensure it matches your specific setup.

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

Yes. The Phantom Black enamel finish provides lasting corrosion protection, keeping it smooth and sleek in both environments.

Q5: What hub system does it use?

It includes the Flo-Torq Reflex Hub Kit 835257K12, a system that cushions vibration, protects the drivetrain, and absorbs minor impact damage.