Mercury – Black Max Propeller | 7.375" Diameter x 7" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Glossy Phantom Black Finish | 815084A02

Overview

There is a reason boaters keep coming back to the Mercury Black Max series — it is dependable, predictable, and built for the kind of days on the water that make you forget about everything else. The Mercury Black Max 3-Blade Aluminum Propeller combines lightweight performance with steady, confident handling. It is designed to keep small outboards smooth, responsive, and efficient, giving you quiet thrust and balanced control every time you open the throttle. From early morning fishing runs to peaceful evening cruises, this prop feels natural — the kind of gear you trust without thinking twice.

Key Features

• Diameter and Pitch: 7.375" Diameter x 7" 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: Rubber hub system cushions vibration and protects drivetrain components

• Design Details: Smooth, balanced design for steady acceleration and reliable water grip

Engine & Boat Compatibility

• Fits Mercury and Mariner 2.5–3.5hp TwoStroke and FourStroke outboards

• Ideal for small fishing boats, tenders, and lightweight inflatables

• Works perfectly for calm lakes, shallow waters, or as an auxiliary motor setup

• Suited for boaters who want consistent, low-maintenance performance in a compact, durable prop

Performance Benefits

• Smooth, Confident Thrust: You will feel the prop engage right away, delivering clean, steady power from idle to cruising speed. It grips the water evenly, helping your boat move forward without hesitation or slip.

• Responsive Handling: The 7.375" diameter and 7" pitch balance acceleration and control beautifully. It’s tuned for smaller motors, offering tight steering and easy maneuverability, whether you are navigating docks, channels, or open water.

• Durable and Forgiving: The Mercalloy aluminum alloy blends toughness with a bit of flexibility, so it can handle minor bumps, sandy shallows, or floating debris without cracking. It’s a practical choice for real-world boating where little scrapes happen.

• Low Maintenance: A quick rinse after use is all it takes. The Phantom Black enamel finish shields against corrosion and keeps it looking sharp in both saltwater and freshwater. It’s built to last through seasons of use without extra fuss.

Why This Prop Is a Strong Choice vs. Alternatives

• Mercury OEM Quality: Designed and tested by Mercury for a perfect fit and long-term reliability.

• Reliable and Easy to Maintain: Straightforward upkeep and proven performance make this prop a go-to for boaters who value dependability.

• Cost-Effective Performance: You get smooth, efficient handling without the higher cost of stainless steel — smart performance that makes sense.

• Versatile and Forgiving: Works beautifully across different small-boat setups, providing steady handling and balance no matter what you’re running.

• Trusted by Boaters: Known for its quiet operation, durable design, and consistent thrust — the kind of prop that earns its place on your motor season after season.

FAQ

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

It fits Mercury and Mariner 2.5–3.5hp TwoStroke and FourStroke outboards.

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

Its Mercalloy aluminum alloy offers an ideal mix of strength and flexibility, giving smaller outboards reliable thrust and long-lasting durability.

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

If you’re running a 2.5–3.5 horsepower Mercury outboard and want smooth, controlled performance, the 7.375" x 7" pitch is an excellent choice. Always review your owner’s manual or speak with your local Mercury dealer to confirm.

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

Yes. The Phantom Black enamel coating protects against corrosion in both environments, keeping it strong and sleek.

Q5: What hub system does it use?

It uses a rubber hub system, along with a shear pin (part number 17-815111) and a cotter pin (part number 18-95295), ensuring smooth performance and easy replacement when needed.