Mercury – Black Max 3-Blade Aluminum Propeller | 15.5" Diameter x 18" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 11324A45

Overview

Something is reassuring about the Mercury Black Max 3-Blade Aluminum Propeller (Part Number 11324A45), it’s that dependable prop you can always count on when the day calls for smooth cruising or a little spirited throttle. Boaters who’ve run one know the feeling: a quick bite out of the hole, a steady lift, and that satisfying hum when everything’s dialed in just right. It’s not flashy, but it doesn’t need to be. It’s reliable, responsive, and made for the kind of days when the water feels like home.

Key Features

• Diameter and Pitch: 15.5" Diameter x 18" Pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade
• Material: Patented Mercalloy Aluminum Alloy
• Finish: Mercury Phantom Black Gloss Enamel
• Hub System: Flo-Torq II Hub Kit (Part Number 835257K1)
• Design Notes: Built for strength with enough flex to handle minor impacts without compromising performance

Engine & Boat Compatibility

• Fits Mercury and Mariner 90–115 HP FourStroke Command Thrust Outboards
• Compatible with Mercury 135–300 HP TwoStroke and FourStroke Outboards
• Designed for MerCruiser Alpha One and Bravo One Sterndrives
• Performs well on runabouts, pontoons, and mid-size fishing boats

Performance Benefits

On the water, this prop feels balanced and predictable, exactly what you want when the wind picks up or the load shifts. You’ll notice a smooth pull from idle to plane, with crisp acceleration and steady grip in turns. The Mercalloy aluminum construction adds a forgiving touch, so light bumps or debris don’t spell disaster.

Its three-blade design offers just the right blend of speed and stability. Cruising feels effortless, and you’ll appreciate how it holds its bite even in choppy water. Maintenance is simple, and the Phantom Black finish isn’t just for looks; it helps resist corrosion, keeping your prop clean and sharp season after season.

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

• Mercury OEM Quality: Built with precision engineering for a perfect fit and reliable, long-term performance.

• Affordable Performance: Offers the strength and dependability of Mercury craftsmanship at a fraction of stainless-steel pricing.

• Real-World Durability: A true workhorse prop designed for everyday boating — from family cruises to weekend fishing trips.

• Low Maintenance: Runs quietly and efficiently without demanding constant adjustments or attention.

• Easy Fit and Longevity: Installs effortlessly, performs consistently, and lasts season after season.

• Smart Value Choice: The Mercury Black Max 11324A45 delivers unbeatable value without compromising performance or reliability.

FAQ

Q1: Which Mercury engines does the Black Max 11324A45 fit?

It fits Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards, 135–300 HP TwoStroke and FourStroke models, and MerCruiser Alpha One and Bravo One sterndrives.

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

The Black Max is built from Mercury’s exclusive Mercalloy aluminum, offering strength and ductility to absorb minor impacts, a durable, budget-friendly alternative to stainless.

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

A 15.5" x 18" prop is ideal if you’re looking for balanced acceleration and top-end performance. Your current prop size is the best reference; match pitch and diameter accordingly.

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

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

Q5: What hub system does it use?

It comes equipped with the Flo-Torq II Hub Kit (Part Number 835257K1), which cushions your drivetrain from impact damage.