Mercury – Black Max Propeller (Black) | 10" Diameter x 7" Pitch | Right-Hand Rotation | 4 Blades | Aluminum | Glossy Phantom Black Finish | 812950A10

Overview

There’s a certain satisfaction that comes with complete control — when your boat responds instantly to your touch, moving exactly the way you want it to. The Mercury Black Max 4-Blade Aluminum Propeller (Black) gives you that kind of confidence on the water. Designed for kicker motors and small outboards, it delivers smooth steering, steady trolling speeds, and a quiet ride that feels natural and effortless. It’s the kind of prop you count on for long days of fishing, exploring, or just easing along calm water with total precision.

Key Features

• Diameter and Pitch: 10" Diameter x 7" Pitch

• Rotation: Right-Hand

• Blade Count: 4 Blades

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

• Finish: Glossy Phantom Black Enamel for long-lasting corrosion resistance

• Hub System: Flo-Torq I Rubber Hub System cushions vibration and protects the drivetrain

• Design Details: Optimized for low-speed control, smooth trolling, and precise steering response

Engine & Boat Compatibility

• Fits Mercury and Mariner 9.9hp BigFoot/Command Thrust (2005 and newer)

• Compatible with 9.9hp ProKicker and 15–20hp FourStroke (2008 and newer) outboards

• Ideal for kicker motors, small fishing boats, inflatables, and light utility craft

• Excellent for trolling, docking, and tight maneuvering where precision matters most

Performance Benefits

• The instant you ease it into gear, you can tell this prop was built for control. It catches the water cleanly and responds with a steady, natural feel that makes steering smooth and effortless.

• The 4-blade design grips the water with authority, offering smooth and predictable steering that makes every adjustment feel controlled. When trolling or idling, it holds a steady rhythm without chatter or slip, keeping your speed consistent even in shifting current or wind.

• Acceleration is clean and steady, giving your boat an easy, confident lift onto plane without strain. The balance between power and precision is what sets this prop apart — it’s responsive enough for subtle course corrections, yet steady enough for long, slow drifts where smoothness matters most.

• Durability is built into every inch of the Black Max. The Mercalloy aluminum alloy gives the perfect combination of strength and flexibility, letting the prop handle everyday bumps, sandbars, or floating debris without losing its shape. The Flo-Torq I rubber hub adds another layer of protection by absorbing vibration and cushioning your drivetrain from minor impacts.

• Maintenance stays simple too — a quick rinse after a run keeps it ready for the next outing. The Phantom Black enamel finish not only looks sharp but shields the prop from corrosion in both saltwater and freshwater. It’s built for boaters who want gear that just works — season after season, trip after trip.

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

• Mercury OEM Quality: Designed by Mercury for precise fit, reliability, and consistent performance.

• Reliable and Easy to Maintain: Durable build with simple upkeep for long-lasting use.

• Cost-Effective Choice: Offers dependable performance and drivetrain protection without the stainless-steel price tag.

• Purpose-Built for Kickers: Provides excellent low-speed control, ideal for trolling and smooth steering.

• Proven Dependability: Trusted by boaters for its quiet operation, steady balance, and long-term durability.

FAQ

Q1: Which Mercury engines does the Black Max 4-Blade Aluminum Propeller fit?

It fits Mercury and Mariner 9.9hp BigFoot/Command Thrust (2005 and newer), 9.9hp ProKicker, and 15–20hp FourStroke (2008 and newer) outboards.

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

Its 4-blade design gives superior grip and speed control at low RPMs, making it perfect for trolling and tight handling. The Flo-Torq I hub system also reduces vibration for a quieter ride.

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

If you’re using a 9.9–20 horsepower Mercury outboard and want smoother handling, stable trolling, and better control, the 10" x 7" pitch is a great match. You can always confirm fitment by checking your engine’s manual or consulting a local dealer.

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

Yes. The Phantom Black enamel finish provides corrosion protection in both environments, keeping it strong and sleek through every season.

Q5: What hub system does it use?

It includes Mercury’s Flo-Torq I Rubber Hub System, which helps absorb vibration and protect your drivetrain from minor impacts — ensuring smoother, longer-lasting performance.