Mercury – Black Max 3-Blade Aluminum Propeller | 10.375" Diameter x 13" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 73136A45

Overview

 There’s a kind of quiet satisfaction that comes with running gear you can count on something that delivers every single time you turn the key. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 73136A45) has that trustworthy, proven feel. It’s the prop that makes your boat feel alive, that smooth surge onto plane, the steady grip through the chop, and the easy glide back to dock at dusk. You’ll feel its balance and reliability in every throttle push. When you spend your weekends on the water, this prop becomes more than a part it’s peace of mind.

Key Features

• Diameter & Pitch: 10.375" diameter x 13" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for balanced performance and steady thrust
• Material: Patented Mercalloy aluminum alloy for strength and flexibility
• Finish: Mercury Phantom Black glossy enamel to resist corrosion and wear
• Hub System: Includes Flo-Torq Reflex Hub Kit 835257K12 for drivetrain protection
• Design Details: Engineered for smooth acceleration, consistent grip, and forgiving impact absorption

Engine & Boat Compatibility

• Designed for Mercury and Mariner 25–30 HP FourStroke BigFoot/Command Thrust outboards
• Fits 30 HP TwoStroke and 30 HP FourStroke (2005 and earlier) engines
• Compatible with 40–60 HP FourStroke outboards
• A natural fit for small fishing boats, runabouts, aluminum hulls, and pontoons, where reliability and easy handling matter most

Performance Benefits

When you hit the throttle, the Black Max 73136A45 delivers that clean, confident push that makes boating feel effortless. You’ll notice quick acceleration with smooth, predictable handling at cruising speed. It bites the water just right, no slipping, no drama, just dependable grip and lift. Through turns, it stays composed, giving you precise control even when the water gets choppy.

What stands out most is how forgiving it feels. The Mercalloy aluminum flexes slightly under stress, protecting your drivetrain from small impacts that might wreck a lesser prop. And with Mercury’s signature Phantom Black enamel finish, corrosion doesn’t stand a chance. It stays sharp-looking and efficient, season after season. Whether you’re cruising calm lakes, fishing shallow rivers, or exploring brackish bays, this prop keeps your boat running steady and sure.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality: Designed and manufactured by Mercury’s own engineers, ensuring factory-level precision, reliability, and balance with every run.

• Reliable and easy to maintain: Built to deliver consistent performance season after season with minimal upkeep—perfect for everyday boaters.

• Cost-effective vs. stainless: Offers the dependable handling and durability of stainless steel at a fraction of the price, giving you real-world value without compromise.

• Versatile fit across multiple setups: Compatible with a wide range of Mercury outboards and boat styles, making it a flexible, go-to choice for many applications.

FAQ Section

Q1: Which Mercury engines does the Black Max 73136A45 fit?

It’s built for Mercury and Mariner 25–30 HP FourStroke BigFoot/Command Thrust, 30 HP TwoStroke, 30 HP FourStroke (2005 and earlier), and 40–60 HP FourStroke outboards.

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

 The Black Max stands out for its Mercalloy aluminum construction, strong yet flexible, and its Flo-Torq Reflex Hub system that cushions your drivetrain against impact damage.

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

A 13-pitch prop like this one is ideal if you’re seeking a balance between acceleration and top-end speed on smaller boats. Check your current prop markings or consult your manual to confirm your optimal pitch range.

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

Absolutely. The Phantom Black enamel finish resists corrosion and maintains performance in freshwater lakes, rivers, and coastal saltwater conditions.

Q5: What hub system does it use?

It comes equipped with the Flo-Torq Reflex Hub Kit 835257K12, designed to reduce vibration and safeguard your prop shaft during unexpected impacts.