Mercury – Black Max Propeller | 11.625" Diameter x 10.5" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Glossy Phantom Black Finish | 827312A45

Overview

If you’ve been out on the water long enough, you know the difference between a prop that simply works and one that truly feels right. The Mercury Black Max 3-Blade Aluminum Propeller is the kind you can count on — smooth, balanced, and always ready for the next run. It s been a trusted favorite for years, built to deliver steady power and reliable performance season after season. From slow cruising near the docks to picking up speed in open water, this prop feels smooth and sure, letting you relax and enjoy the ride.

Key Features

• Diameter and Pitch: 11.625" Diameter x 10.5" Pitch

• Rotation: Right-Hand

• Blade Count: 3 Blades

• Material: Mercury’s patented Mercalloy aluminum alloy for strength and flexibility

• Finish: Glossy Phantom Black enamel for corrosion resistance and long-lasting shine

• Hub System: Flo-Torq Reflex Hub Kit 835257K12 cushions vibration and protects the drivetrain

• Design Details: Precision-engineered blades for smooth acceleration, water grip, and quiet operation

Engine & Boat Compatibility

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

• Compatible with 30 horsepower TwoStroke and 30 horsepower FourStroke (2005 and earlier) models

• Works with 40–60 horsepower FourStroke outboards

• Ideal for small fishing boats, pontoons, runabouts, and light cruisers

• A great match for boaters who want dependable performance without the cost or maintenance of stainless steel

Performance Benefits

• Steady, Predictable Power: The Black Max delivers clean, consistent thrust from the moment you shift into gear. You’ll feel the prop grab the water evenly, giving you confident control whether you’re accelerating or maintaining a steady pace.

• Smooth Acceleration: With its 11.625" diameter and 10.5" pitch, this prop finds the perfect middle ground between power and efficiency. Your boat climbs onto plane quickly, with a steady pull that feels controlled and sure-footed — no slip, no chatter.

• Effortless Handling: The balance of this design makes steering easy and natural. Whether you’re cruising on glassy water or steering through a light breeze, the prop keeps your boat steady and smooth, so you hardly have to work the wheel.

• Durable and Forgiving: Made from Mercury’s advanced Mercalloy aluminum, this prop is tough enough to handle minor bumps, sandy bottoms, or floating debris without damage. The Flo-Torq Reflex Hub adds an extra layer of drivetrain protection by absorbing shocks from sudden impacts.

• Low Maintenance: You’ll appreciate how simple it is to care for. A quick rinse after use and an occasional inspection are all it needs. The Phantom Black finish helps protect against corrosion in both saltwater and freshwater, keeping it performing like new season after season.

Why This Prop Is a Strong Choice vs. Alternatives

• Mercury OEM Quality: Designed and tested by Mercury’s own engineers for perfect fit, balance, and performance.

• Reliable and Easy to Maintain: Durable construction with straightforward care that keeps you on the water longer.

• Cost-Effective Performance: Offers the handling and dependability you expect without the higher price of stainless steel.

• Versatile and Forgiving: Performs beautifully across different boat and motor setups, giving you flexibility and peace of mind.

• Trusted by Boaters: Known for quiet operation, consistent lift, and long-term reliability — a go-to prop for Mercury owners worldwide.

FAQ

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

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

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

Its Mercalloy aluminum construction combines strength with a bit of flexibility, giving it the ability to withstand light impacts while maintaining smooth, steady performance.

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

If your Mercury outboard falls between 25 and 60 horsepower and you’re looking for balanced performance and control, the 11.625" x 10.5" pitch is a great fit. You can confirm by checking your owner’s manual or speaking with your Mercury dealer.

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

Yes. Its Phantom Black enamel coating provides excellent corrosion resistance in both environments.

Q5: What hub system does it use?

It comes with Mercury’s Flo-Torq Reflex Hub Kit 835257K12, which reduces vibration and protects the drivetrain from sudden impacts.