Mercury – SpitFire Propeller | 14" Diameter x 12" Pitch | Right-Hand Rotation | 4-Blade | Aluminum | Polished Finish | 8M0084491

Overview

When you drop the throttle with the Mercury SpitFire prop, you will feel the kind of response that makes you grin before the boat even levels out. It’s that quick, confident lift — the kind that turns hesitation into instant movement. The bow rises, settles, and you’re slicing cleanly across the water with steady control. This prop doesn’t just move your boat; it transforms how it feels to run it. Whether you’re heading out at dawn to chase fish or taking friends for an afternoon cruise, the SpitFire makes every outing smoother, faster, and more enjoyable.

Key Features

• Diameter and Pitch: 14" Diameter x 12" Pitch

• Rotation: Right-Hand

• Blade Count: 4-Blade

• Material: Patented Mercalloy Aluminum Alloy

• Finish: Polished Aluminum

• Hub System: Flo-Torq II Hub Kit 835257K1 (included)

• Design Details: Aggressive blade geometry delivers 16–25% faster acceleration, enhanced lift, and precise handling

Engine & Boat Compatibility

• Fits Mercury and Mariner 90–115 horsepower FourStroke Command Thrust outboards

• Compatible with Mercury and Mariner 135–300 horsepower TwoStroke and FourStroke outboards

• Works with MerCruiser Alpha One and Bravo One sterndrives

• Perfect for Bass boats, Center Consoles, Pontoons, Multi-Species boats, and family runabouts

Performance Benefits

There’s a reason boaters talk about the SpitFire like it’s more than just a propeller — it feels alive under throttle. The moment you hit the gas, the blades grab the water with purpose, launching you forward with surprising speed. The four-blade setup gives it a strong, even grip through every turn, so you stay locked in and confident no matter what the conditions throw at you.

At cruising speed, it’s quiet, smooth, and steady — the kind of ride that lets you relax behind the wheel. The Mercalloy aluminum construction strikes the right balance between strength and forgiveness, allowing it to handle light impact without warping or cracking. You’ll notice how easily it holds plane, how it maintains speed without over-revving, and how forgiving it is in shallow or unpredictable water. Maintenance is simple, too — a quick rinse and it’s ready for another run.

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

If you’re looking to upgrade from a three-blade, the SpitFire will quickly make you a believer. It keeps up with — and often outruns — comparable three-blade props, while adding noticeably better grip, lift, and acceleration. You’ll plane faster, handle tighter, and feel more in control, all without sacrificing top-end performance.

Because it’s built from Mercury’s own patented Mercalloy aluminum, it’s durable enough for serious use but lighter and more forgiving than stainless. The included Flo-Torq II Hub Kit also helps protect your drivetrain from most minor impacts — a feature every boater can appreciate when navigating unfamiliar waters. With decades of Mercury engineering behind it, this propeller delivers the balance of performance, value, and reliability that makes it one of the smartest upgrades you can bolt onto your boat.

FAQ Section

Q1: Which Mercury engines does the SpitFire Propeller fit?

It’s designed for Mercury and Mariner outboards from 90 to 300 horsepower, and also works with MerCruiser Alpha One and Bravo One sterndrives.

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

The SpitFire’s aggressive four-blade geometry delivers up to 25% faster acceleration and tighter handling, matching the speed of many three-blade props.

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

If your boat feels sluggish out of the hole or struggles to stay on plane, the 14" x 12" SpitFire is an ideal upgrade for quicker lift and stronger control.

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

Yes. The Mercalloy aluminum alloy resists corrosion and performs dependably in either environment with minimal maintenance.

Q5: What hub system does it use?

It comes with the Mercury Flo-Torq II Hub Kit 835257K1, designed to protect the drivetrain from most minor impact damage while allowing easy installation.