Mercury – Enertia 3-Blade Stainless Steel Propeller | 13.6" Diameter x 21" Pitch | Left-Hand Rotation | 3-Blade | X7 Stainless Steel | Polished Finish | 8M0151242

Overview

There’s something special about the moment your boat lifts onto plane — that clean, powerful surge where everything feels perfectly in sync. The Mercury Enertia 3-Blade Stainless Steel Propeller (8M0151242) delivers that feeling every single time. It’s fast off the line, steady at speed, and confident through every turn. Built for boaters who love the sensation of control and responsiveness, the Enertia gives your boat that lively, connected feel that makes every trip across the water a little more thrilling.

Key Features

• Diameter and Pitch: 13.6" Diameter x 21" Pitch
• Rotation: Left-Hand
• Blade Count: Three-Blade design for acceleration, lift, and speed
• Material: Mercury X7 stainless steel alloy — 30% stronger and four times more durable than conventional stainless steel
• Finish: Polished finish for corrosion resistance and smooth water flow
• Hub System: Requires Mercury Flo-Torq hub kit (sold separately)
• Design Details: Equipped with Mercury’s Performance Vent System (PVS) for adjustable 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 demand balance, lift, and responsive handling

Performance Benefits

The Mercury Enertia 3-Blade Propeller is built to turn raw engine power into precise, confident motion. From the moment you throttle up, you’ll feel it dig in and push your boat forward with clean, efficient thrust. The lift is smooth and immediate — no lag, no slip, just steady acceleration that feels both strong and natural.

Once you’re on plane, the Enertia shines with a level of balance and control that makes every maneuver feel intuitive. Whether you’re carving through open water or making tight turns near the docks, the boat tracks true and steady. There’s no wandering at speed, no loss of grip in chop — just consistent, predictable handling that makes you feel fully in command.

That dependable performance comes from Mercury’s exclusive X7 stainless steel alloy, a proprietary material that’s 30% stronger than standard stainless steel. It doesn’t flex under heavy load or lose its pitch over time, which means your prop stays true run after run. Combined with the Performance Vent System (PVS), you can easily customize your acceleration by swapping vent plugs — giving you the flexibility to tune your hole shot for your specific boat setup, weight, or water conditions.

It’s a prop designed for more than just power. It’s about the connection between you, your boat, and the water — that smooth, confident ride that keeps you coming back for more.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM Engineering: Built and tested by Mercury’s experts for seamless performance and long-term reliability.
• Unmatched Strength: The X7 stainless steel alloy is 30% stronger and stiffer than conventional stainless for consistent, efficient performance.
• Customizable Acceleration: The PVS system allows you to fine-tune your hole shot to match your load, boat type, and conditions.
• Versatile Fit: Performs beautifully across a range of engines and boats, from sporty runabouts to heavy pontoons.
• Built to Last: Polished stainless steel resists corrosion and maintains its finish season after season.

If you’re the kind of boater who pays attention to how the ride feels — that smooth lift, that steady tracking, that perfect throttle response — the Enertia 3-Blade is a propeller that won’t let you down. It’s dependable, responsive, and made for those who truly enjoy the art of boating.

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 is built with Mercury’s exclusive X7 stainless steel alloy, making it stronger, stiffer, and more durable than standard stainless. It also features the PVS system for customizable acceleration.

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

A 21" pitch prop is ideal for midsize to larger boats that need a mix of fast acceleration and strong top-end speed. Check your engine’s recommended RPM range for best results.

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

Yes. Its polished stainless steel finish resists corrosion and maintains long-term durability in both environments.

Q5: What hub system does it use?

It requires a Mercury Flo-Torq hub kit (sold separately), which cushions drivetrain shock and provides smooth, reliable shifting and acceleration.