Mercury – Black Max Plastic Propeller | 7.375" Diameter x 6" Pitch | Right-Hand Rotation | 3 Blades | Plastic | 815083A01

Overview

There is something satisfying about simple, dependable gear that just does what it’s supposed to. The Mercury Black Max 3-Blade Plastic Propeller is that kind of part — light, efficient, and built for smaller Mercury outboards that thrive on easy handling and reliability. It’s the kind of prop you mount once and forget about because it keeps working trip after trip. Running a small fishing boat, a tender, or maybe an inflatable? This prop gives you smooth, even power and steady handling that just feels right from the start.

Key Features

• Diameter and Pitch: 7.375" Diameter x 6" Pitch

• Rotation: Right-Hand

• Blade Count: 3 Blades

• Material: Durable Plastic for lightweight performance and impact resistance

• Finish: Smooth black surface designed for long-lasting use

• Hub System: Uses shear pin 17-815111 and cotter pin 18-95295 for safe, reliable operation

• Design Details: Lightweight build ideal for small outboards, offering easy replacement and steady thrust

Engine & Boat Compatibility

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

• Perfect for portable and small craft setups, including dinghies, tenders, and lightweight fishing boats

• Great for calm-water cruising, shoreline runs, or serving as an auxiliary motor on larger vessels

Performance Benefits

• This prop might be small, but it knows how to deliver smooth, steady power. Once you ease the throttle forward, it grabs the water cleanly and moves your boat with quiet, predictable thrust. Steering feels natural — no jerky response or chatter, just an even pull that makes small-boat handling comfortable and easy.

• Acceleration comes on clean and controlled, giving you a quick lift without overworking your motor. It’s a prop that feels balanced, keeping your boat stable even when shifting direction or slowing down in tight spots.

• Durability is part of its design. The tough plastic construction absorbs light impacts from debris or shallow ground without cracking or warping, making it a forgiving choice for smaller boats and new boaters alike. It’s also lightweight, which helps your motor run efficiently without unnecessary strain.

• Maintenance is about as simple as it gets — a quick check of your shear pin and rinse after use, and you’re good to go. There’s no polish or upkeep required, just reliable performance that stands up to repeated use in both saltwater and freshwater environments.

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

• Mercury OEM Quality: Designed by Mercury for a precise fit and dependable performance on small outboards.

• Reliable and Easy to Maintain: Lightweight, durable plastic construction means fewer worries and easy upkeep.

• Cost-Effective Choice: Offers excellent value, delivering smooth performance without the higher cost of metal props.

• Forgiving and Durable: Handles small bumps, sandy bottoms, and light debris without damage.

• Perfect for Portable Power: Ideal for small motors, backup engines, and boaters who value simplicity and reliability.

FAQ

• Q1: Which Mercury engines does the Black Max 3-Blade Plastic 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?

This model’s lightweight plastic design makes it durable yet forgiving, ideal for smaller portable outboards and everyday use.

• 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 handling and easy maintenance, the 7.375" x 6" pitch is a great fit. You can confirm compatibility by checking your owner’s manual or consulting your local Mercury dealer.

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

Yes, its durable plastic build resists corrosion and wear, performing well in both saltwater and freshwater conditions.

• 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, reliable performance and easy replacement when needed.