Mercury – Enertia ECO 3-Blade Stainless Steel Propeller | 16" Diameter x 20" Pitch | Right-Hand Rotation | 3 Blades | X7 Stainless Steel | Polished Finish | 8M0151257

Overview

Some props just move your boat — others make it feel alive. The Mercury Enertia ECO 3-Blade Stainless Steel Propeller (Part Number 8M0151257) is one of those rare designs that changes the way you experience every run. You’ll notice it the moment you throttle up — smooth, powerful, and efficient. It’s the kind of prop that lets you stay out longer, cover more water, and still have fuel left to chase one more sunset. It’s built for those who don’t just boat — they explore.

Key Features

• Diameter and Pitch: 16" Diameter x 20" Pitch

• Rotation: Right-Hand

• Blade Count: 3-Blade Design

• Material: Mercury X7 Stainless Steel Alloy (30% stronger and four times more durable than standard stainless)

• Finish: Polished Stainless Steel

• Hub System: Requires Mercury Hub Kit (sold separately)

• Design Details: Optimized for maximum range and fuel economy at cruising speeds without losing acceleration or top-end speed

Engine & Boat Compatibility

• Designed for Mercury and Mariner 90–115 HP Command Thrust outboards

• Fits Mercury 135–350 HP TwoStroke and FourStroke outboards (excluding V10 Verado)

• Compatible with MerCruiser Alpha One and Bravo One sterndrives

• Ideal for runabouts, pontoons, and fishing boats that cruise at mid-range RPMs and value smooth, efficient performance

Performance Benefits

The Enertia ECO is all about effortless power and lasting efficiency. You will feel its confidence as soon as the throttle moves forward — clean lift, steady thrust, and smooth transition onto plane. Once you are at cruising speed, the difference becomes crystal clear. The boat tracks straight and steady, the engine hums at ease, and the fuel gauge moves noticeably slower. That’s the beauty of the ECO design — you’re getting the range to explore more, with less strain on your engine.

Its three-blade layout, crafted from Mercury’s exclusive X7 stainless steel, holds the water cleanly and resists flex, even under heavy loads or in choppy conditions. You’ll get a smooth ride that feels composed, not forced. Whether you’re running offshore, towing, or just stretching your legs across a big lake, this prop delivers the kind of balance and reliability that turns routine rides into memorable ones.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM quality backed by decades of marine engineering and testing

• Built for fuel efficiency — saves fuel at cruising speed without sacrificing acceleration

• Versatile fit across a wide range of outboards and sterndrives

• Exceptional durability with the X7 alloy for long-term performance in salt or fresh water

• Smooth and quiet operation, ideal for cruising and long-distance boating

• Cost-effective choice for those who value both performance and economy

If you’re the kind of boater who values time on the water as much as speed, this is the prop to trust. It doesn’t just perform well — it makes every trip more efficient, smoother, and more enjoyable.

FAQ

Q1: Which Mercury engines does the Enertia ECO fit?

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

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

The Enertia ECO is engineered for range and efficiency. It’s designed to optimize fuel use at cruising speeds while maintaining strong acceleration and top-end speed, something few props manage to balance this well.

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

A 20-pitch prop works best for boats that spend most of their time cruising at mid-range RPMs. If you are looking to boost range and reduce fuel consumption without losing responsiveness, this prop is a perfect match.

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

Yes. The X7 stainless alloy provides exceptional resistance to corrosion and fatigue, ensuring reliable performance in all water conditions.

Q5: What hub system does it use?

It requires a Mercury hub kit (sold separately) for smooth, precise engagement and compatibility with your specific engine setup.