Mercury – Black Max 3-Blade Aluminum Propeller | 7.4" Diameter x 6" Pitch | Right-Hand Rotation | 3 Blades | Aluminum | Glossy Phantom Black Finish | 815084A01

Overview

There is something reassuring about gear that just works every time you need it to. The Mercury Black Max 3-Blade Aluminum Propeller is exactly that — a dependable, well-balanced prop built to keep your small outboard running smooth and steady. It’s lightweight yet tough enough to handle everyday use, delivering quiet thrust and clean handling that make every trip on the water effortless. When you’re guiding a small fishing boat or drifting through quiet coves in your dinghy, this prop gives you that easy confidence that comes from gear you can truly rely on.

Key Features

• Diameter and Pitch: 7.4" Diameter x 6" 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: Uses shear pin 17-815111 and cotter pin 18-95295 for safe, reliable performance

• Design Details: Precision-engineered blades for smooth lift, clean water grip, and steady power

Engine & Boat Compatibility

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

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

• Works beautifully in calm lakes, harbors, and quiet shoreline runs

• A smart choice for portable outboards where smooth, efficient thrust matters most

Performance Benefits

• Smooth Power Delivery: You will feel the prop catch right away, delivering smooth, confident thrust the moment your engine starts to idle.. It grips the water evenly, giving your boat steady acceleration that feels natural and controlled — no slip, no chatter, just smooth forward motion.

• Balanced Handling: The 7.4" diameter and 6" pitch combination gives this prop the perfect balance for smaller outboards. Steering feels precise yet forgiving, letting you make gentle turns or quick adjustments without fighting the motor.

• Durable Construction: Mercury’s Mercalloy aluminum alloy blends toughness with a touch of flexibility, allowing it to handle light bumps, sandy shallows, or floating debris without bending or cracking. It’s the kind of durability that keeps you on the water instead of in the shop.

• Easy Maintenance: A quick rinse after use is usually all it needs. The Phantom Black enamel finish protects against corrosion, keeping the prop looking sharp and performing consistently — whether you’re boating in saltwater or freshwater.

Why This Prop is a Strong Choice vs. Alternatives

• Mercury OEM Quality: Designed by Mercury for perfect fit and proven performance.

• Reliable and Easy to Maintain: Rugged Mercalloy construction with simple upkeep.

• Cost-Effective Performance: You get solid, dependable handling without having to shell out for a pricey stainless-steel prop. It does the job right and keeps things simple.

• Versatile and Forgiving: It fits a variety of small boats and outboards with no fuss. Whatever you’re running, it stays steady, easy to handle, and just feels right on the water.

• Trusted by Boaters: People keep coming back to this prop because it’s quiet, balanced, and built to last. It delivers that steady lift and long-term dependability you can count on 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 construction provides a perfect mix of strength and flexibility, giving smaller outboards steady thrust and long-lasting reliability.

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, balanced performance for light-duty use, the 7.4" x 6" pitch setup is a great match. Check your owner’s manual or reach out to your local Mercury dealer to confirm compatibility.

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

Yes. The Phantom Black enamel finish helps prevent corrosion and maintains performance in both environments.

Q5: What hub system does it use?

It uses a shear pin (part number 17-815111) and cotter pin (part number 18-95295) for secure, dependable operation that’s easy to replace when needed.