Mercury – SpitFire X7 4-Blade Stainless Steel Propeller | 14" Diameter x 13" Pitch | Right-Hand Rotation | 4-Blade | Stainless Steel | Polished Finish | 8M0151360

Overview

The Mercury SpitFire X7 14x13 Right-Hand 4-Blade Stainless Steel Propeller (8M0151360) is the kind of prop that makes your boat feel alive under your hands. From the moment you hit the throttle, it leaps forward with a burst of energy that’ll make you grin. It’s crisp, smooth, and responsive—everything you want when you’re chasing performance and precision on the water.

For boaters who love speed but won’t sacrifice control, the SpitFire X7 strikes the perfect balance. It’s built for those who crave tight turns, quick acceleration, and that extra edge when conditions get unpredictable. This prop doesn’t just move you across the water—it connects you to it.

Key Features

• Diameter and Pitch: 14" Diameter x 13" Pitch
• Rotation: Right-Hand Rotation
• Blade Count: 4-Blade Design
• Material: Mercury X7 Stainless Steel Alloy (30% stronger than conventional stainless steel)
• Finish: Polished Stainless Steel
• Hub System: Requires a Mercury hub kit (sold separately)
• Design Details: Compact diameter and aggressive blade geometry for outstanding speed and hole shot performance; Performance Vent System (PVS) for fine-tuned acceleration

Engine & Boat Compatibility

• Works with Mercury and Mariner 40–60 HP Command Thrust Outboards (4.25-inch gearcase)
• Fits Mercury 75–125 HP TwoStroke and FourStroke Outboards
• Great for midsize boats focused on speed, fishing boats, and performance runabouts
• Suitable for both freshwater and saltwater applications

Performance Benefits

The SpitFire X7 is a performance prop that’s all about bite, balance, and bold acceleration. The four-blade design grips the water with authority, lifting your boat onto plane faster and keeping it there with less effort. You’ll feel an instant connection as soon as you throttle up—the prop hooks up cleanly, giving you a confident, responsive launch every time.

Once you’re underway, the X7 alloy blades keep things steady and smooth, even when the water’s choppy or your load shifts. The prop’s aggressive geometry translates to precise handling and a lively feel at cruising and top-end speeds. You’ll notice it especially in turns—how the stern tracks true and doesn’t slip out when you lean in.

Thanks to Mercury’s X7 stainless steel, this prop isn’t just about performance—it’s built to last. It’s tougher than standard stainless steel, resists corrosion, and stands up to impact better than you’d expect. The Performance Vent System (PVS) lets you fine-tune your setup, giving you control over how your boat accelerates out of the hole. It’s a performance tweak you’ll appreciate once you’ve felt the difference.

Why is this prop a strong choice vs. alternatives?

• True Mercury OEM Design: Engineered for a perfect fit and tested extensively for performance, handling, and balance.
• Fast and Forgiving: The four-blade layout improves grip and lift without adding drag, making it both responsive and stable.
• Built for Durability: The X7 stainless steel alloy is 30% stronger and four times more durable than standard stainless steel props.
• Customizable Feel: The PVS system allows for personalized acceleration control to match your boat, engine, and conditions.
• Ideal for Performance Boaters: Whether you’re chasing speed or precision handling, this prop keeps up with your ambition.

FAQ Section

Q1: Which Mercury engines does the SpitFire X7 fit?

It fits Mercury and Mariner 40–60 HP Command Thrust outboards with the 4.25-inch gearcase, as well as Mercury 75–125 HP TwoStroke and FourStroke outboards.

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

The SpitFire X7’s compact diameter and aggressive four-blade design give it exceptional acceleration and top-end speed, making it one of Mercury’s most responsive props in its class.

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

If you’re running a midrange Mercury outboard and want quicker planing, stronger grip in turns, or higher top-end speed, the 13-pitch SpitFire X7 is a smart fit.

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

Yes. The X7 stainless steel construction and polished finish provide excellent corrosion resistance in any environment.

Q5: What hub system does it use?

It requires a Mercury hub kit (sold separately) for precise fit and smooth, vibration-free operation.