Mercury – Black Max 3-Blade Aluminum Propeller | 9" Diameter x 8" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 828154A12

Overview

There’s something special about a boat that responds exactly the way you expect it to. When you throttle up and feel the smooth pull forward, that’s confidence — the kind that comes from knowing your prop can handle whatever the day brings. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 828154A12) delivers that feeling every time you’re on the water. It’s dependable, forgiving, and just plain reliable — the kind of prop you trust because it’s been proving itself for years on docks, rivers, and coastal runs everywhere.

Key Features

• Diameter and Pitch: 9" Diameter x 8" Pitch

• Rotation: Right-Hand

• Blade Count: 3

• Material: Patented Mercalloy Aluminum Alloy

• Finish: Mercury Phantom Black Glossy Enamel

• Hub System: Rubber hub bushing for vibration absorption and drivetrain protection

• Design Notes: Balanced for smooth performance, strong yet flexible aluminum for minor impact resistance

Engine & Boat Compatibility

• Designed for Mercury and Mariner 6–15 HP TwoStroke outboards

• Fits 9.9 HP FourStroke (1995–2004) and 15 HP FourStroke (through 2007) engines

• Works with 10–15 HP SeaPro and Marathon models

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

Performance Benefits

What really stands out about this Mercury propeller is how natural it feels once you’re underway. The 9" x 8" pitch gives quick, confident acceleration that’s especially noticeable when getting onto plane or maneuvering in tight channels. There’s a steady grip through the turns and a smooth, even lift at cruising speeds that helps the boat feel balanced and predictable.

The Mercalloy aluminum material absorbs small impacts — a lifesaver when you’re navigating shallow coves or unknown waters — while the rubber hub keeps vibrations in check, letting your motor run smooth and quiet. You’ll notice less buzz in the tiller and more comfort during longer runs. Maintenance is minimal too; a simple rinse and light inspection are often all it takes to keep it ready for your next outing.

Why This Prop is a Smart Choice

If you’ve spent time around the docks, you’ve heard plenty of boaters talk about the Black Max — and for good reason. It’s the prop that’s tough enough to take the knocks but light enough to give your small outboard real punch and responsiveness. Mercury builds these props with the same engineering precision found in their engines, so you’re getting genuine OEM quality that fits right and performs right.

Compared to stainless props, it’s easier on your wallet and your drivetrain, offering a balance of performance, durability, and forgiveness that suits casual cruisers and weekend anglers alike. Whether you’re trolling at dawn or running back to the ramp at sunset, the Black Max 828154A12 delivers dependable handling and a smooth, steady ride that makes every trip more enjoyable.

FAQ Section

Q1: Which Mercury engines does the Black Max 9" x 8" fit?

This prop fits Mercury and Mariner 6–15 HP TwoStroke engines, 9.9 HP FourStroke (1995–2004), 15 HP FourStroke (through 2007), and 10–15 HP SeaPro or Marathon outboards.

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

The Black Max is crafted from Mercury’s proprietary Mercalloy aluminum alloy — strong enough to resist bending yet flexible enough to handle light impacts. It’s a proven, all-around performer built for everyday reliability.

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

If your engine falls within the 6–15 HP range and you want quick acceleration with dependable cruising control, this 9" x 8" propeller is an excellent fit. Always check your engine’s manual for specific pitch recommendations.

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

Yes. The Phantom Black enamel coating resists corrosion in both saltwater and freshwater. Rinsing after each trip helps keep it in top condition.

Q5: What hub system does it use?

It uses a rubber-cushioned hub that absorbs vibration and protects your outboard’s drivetrain from stress caused by light underwater impacts.