Mercury – SpitFire 4-Blade Aluminum Propeller | 14” Diameter x 19” Pitch | Right-Hand Rotation | 4 Blades | Aluminum | Polished Finish | 8M0084495

Overview

There’s a moment every boater knows — when the throttle slides forward, the bow lifts, and everything feels right. The Mercury SpitFire 4-Blade Aluminum Propeller (Part Number 8M0084495) captures that feeling every single time. It is built for those who want crisp acceleration, confident control, and a prop that simply grips the water and goes. You’ll feel it on takeoff — that smooth, sure-footed pull that doesn’t let go, even when the water gets unpredictable. It’s not just about performance numbers; it’s about trust, balance, and the pure connection between you, your boat, and the water beneath.

Key Features

• Diameter and Pitch: 14” Diameter x 19” Pitch
• Rotation: Right-Hand
• Blade Count: Four blades for improved lift, traction, and balance
• Material: Patented Mercalloy aluminum alloy — strong yet flexible under stress
• Finish: Polished aluminum for sleek, efficient performance
• Hub System: Flo-Torq II Hub Kit (Part Number 835257K1) included for drivetrain protection
• Design Details: Aggressive blade geometry that enhances speed, handling, and acceleration

Engine & Boat Compatibility

• Designed for Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards
• Fits Mercury and Mariner 135–300 HP TwoStroke and FourStroke outboards
• Works with MerCruiser Alpha One and Bravo One sterndrives
• Ideal for a range of boats — runabouts, pontoons, and fishing boats — giving steady lift, responsive turns, and smooth cruising

Performance Benefits

• Quick, confident takeoff: The SpitFire 14x19 grabs water fast, providing up to 16–25% quicker acceleration than comparable three-blade props. You’ll notice how quickly your boat gets on plane and how steady it feels as you throttle up.
• Smooth, balanced ride: The four-blade design grips evenly through turns, keeping your control tight and predictable even in chop. At cruising speeds, it delivers a quiet, composed feel that makes long runs effortless.
• Strength with forgiveness: Mercury’s Mercalloy aluminum alloy gives this prop a unique edge — it’s tough enough to take on demanding use, yet ductile enough to handle minor impacts without fracturing.
• Protected power: The Flo-Torq II Hub Kit helps shield your engine’s drivetrain from damage caused by unexpected bumps, giving you peace of mind on every trip.
• Easy upkeep: Maintenance is simple, replacement parts are easy to source, and performance remains sharp season after season.

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

The Mercury SpitFire 4-Blade Aluminum Propeller hits the balance every boater hopes for — speed, control, and reliability — all without the higher price tag of stainless steel. It’s genuine Mercury OEM quality, built by the same engineers who design the engines it’s meant to power. Every curve and edge has been tested to deliver consistent, real-world results you can feel on the water.

For boaters who move between freshwater lakes and saltwater bays, this prop’s polished aluminum finish and durable construction hold up beautifully. It fits multiple Mercury setups with ease, making it one of the most versatile and trustworthy props in its class. If you value smooth acceleration, solid handling, and simple upkeep, the SpitFire 14x19 is the kind of prop you’ll keep for years.

FAQ

Q1: Which Mercury engines does the SpitFire 4-Blade fit?

It fits Mercury and Mariner 90–115 HP FourStroke Command Thrust outboards, 135–300 HP TwoStroke and FourStroke outboards, and MerCruiser Alpha One and Bravo One sterndrives.

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

The SpitFire combines the tight grip and lift of a four-blade with the top-end speed of a three-blade, giving boaters faster acceleration and improved handling without losing peak performance.

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

If your engine operates comfortably within its RPM range using a 19” pitch prop, this one should perform beautifully. Check your owner’s manual or talk with your Mercury dealer for the best fit.

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

Yes. The aluminum alloy and polished finish handle both environments well. Rinsing after saltwater use helps maintain its shine and longevity.

Q5: What hub system does it use?

It includes the Flo-Torq II Hub Kit (Part Number 835257K1), which helps protect your drivetrain from most minor impacts, keeping your setup running strong.