Mercury – Enertia 3-Blade Stainless Steel Propeller | 15" Diameter x 15" Pitch | Right-Hand Rotation | 3-Blade | X7 Stainless Steel | Polished Finish |8M0151231

Overview

There is a certain kind of thrill that only comes when your boat leaps onto plane — smooth, strong, and perfectly controlled. The Mercury Enertia 3-Blade Stainless Steel Propeller (Part Number 8M0151231) delivers that exact moment, time and time again. It’s fast, precise, and feels alive beneath your hands, turning every throttle push into clean, effortless motion. Whether you’re chasing wide-open water or pulling the kids behind you for an afternoon of fun, the Enertia keeps your boat steady, quick to lift, and ready for anything the day brings.

Key Features

• Diameter and Pitch: 15" Diameter x 15" Pitch
• Rotation: Right-Hand
• Blade Count: Three-Blade design for lift, speed, and smooth handling
• Material: Mercury X7 stainless steel alloy — 30% stronger and four times more durable than conventional stainless steel
• Finish: Polished for corrosion resistance and efficient water flow
• Hub System: Requires Mercury Flo-Torq hub kit (sold separately)
• Design Details: Features Mercury’s Performance Vent System (PVS) for customizable hole shot and acceleration tuning

Engine & Boat Compatibility

• Fits Mercury and Mariner 90–115 HP Command Thrust outboards
• Compatible with Mercury 135–350 HP TwoStroke and FourStroke outboards (excluding V10 Verado models)
• Works with MerCruiser Alpha One and Bravo One sterndrives
• Ideal for runabouts, pontoons, and midsize to large recreational boats that need quick acceleration, control, and reliable speed

Performance Benefits

The Mercury Enertia 3-Blade Propeller is designed to give you that feeling of effortless power — the kind that makes every throttle push rewarding. When you accelerate, the prop grips hard and lifts cleanly, getting your boat on plane faster and with more stability. You’ll notice that crisp response right away — no hesitation, no struggle, just a clean burst of thrust that feels natural and confident.

Once you’re running, the Enertia maintains a smooth, predictable rhythm. The boat tracks evenly through turns, holds speed in choppy water, and delivers an overall sense of control that makes driving more enjoyable. Crafted from Mercury’s proprietary X7 stainless steel alloy, this prop is built to handle the pressure. It’s stronger and stiffer than traditional stainless, which means it won’t flex under load or lose pitch accuracy over time. That results in more consistent performance season after season.

Add to that the Performance Vent System (PVS), and you’ve got full control over how your boat accelerates. By adjusting the vent plugs, you can fine-tune the hole shot and throttle response to your exact needs — whether you’re running light and fast or carrying extra weight on board. It’s that level of customization that separates the Enertia from the rest.

This prop doesn’t just move your boat — it transforms the way you experience it.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM Precision: Designed and engineered by Mercury for seamless compatibility and proven reliability.
• Unmatched Strength: The X7 alloy is tougher and more durable than conventional stainless, offering years of dependable performance.
• Customizable Performance: The PVS system lets you fine-tune acceleration and hole shot to suit your boat’s setup.
• Versatility: Performs beautifully across different hull types and power levels — from high-speed runs to family cruising.
• Long-Term Value: Built to resist corrosion, flexing, and fatigue, maintaining high performance over time.

If you want a prop that’s fast, reliable, and built to make your boat feel more responsive, the Enertia 3-Blade is it. It’s for boaters who expect more than motion — they expect mastery.

FAQ

Q1: Which Mercury engines does the Enertia 3-Blade Propeller fit?

It fits Mercury and Mariner 90–115 HP Command Thrust outboards, Mercury 135–350 HP TwoStroke and FourStroke outboards (excluding V10 Verado), and MerCruiser Alpha One and Bravo One sterndrives.

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

The Enertia’s X7 stainless steel alloy is stronger and stiffer than standard stainless, giving it superior acceleration, lift, and long-term consistency.

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

A 15" pitch prop is best for midsize to large boats seeking strong acceleration and smooth top-end performance. Checking your engine’s RPM range ensures the right match.

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

Yes. The polished stainless steel finish provides excellent corrosion resistance and durability in both environments.

Q5: What hub system does it use?

It requires a Mercury Flo-Torq hub kit, sold separately. The hub cushions drivetrain impact and makes installation simple and secure.