Mercury – SpitFire 4-Blade Aluminum Propeller | 14” Diameter x 23” Pitch | Right-Hand Rotation | 4 Blades | Aluminum | Polished Finish | 8M0084497

Overview

There is nothing quite like the moment your boat responds the instant you touch the throttle — the bow lifts, the engine hums, and you’re gliding over the water with complete control. That’s the kind of confidence the Mercury SpitFire 4-Blade Aluminum Propeller (Part Number 8M0084497) delivers. It’s built for boaters who love the balance of power and precision, those moments when smooth handling meets undeniable speed. From quick acceleration to steady cruising, this prop makes every trip feel intentional — clean, efficient, and exciting from start to finish.

Key Features

• Diameter and Pitch: 14” Diameter x 23” Pitch
• Rotation: Right-Hand
• Blade Count: Four blades for superior grip, lift, and stability
• Material: Patented Mercalloy aluminum alloy — engineered for strength and durability
• Finish: Polished aluminum finish for long-lasting performance and shine
• Hub System: Flo-Torq II Hub Kit (Part Number 835257K1) included for drivetrain protection
• Design Details: Aggressive blade geometry that boosts acceleration and top-end speed

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
• Compatible with MerCruiser Alpha One and Bravo One sterndrives
• Ideal for runabouts, pontoons, and fishing boats, offering smooth lift, strong midrange control, and efficient cruising at higher speeds

Performance Benefits

• Fast, confident acceleration: The SpitFire 14x23 grabs the water with precision, delivering 16–25% faster acceleration than comparable three-blade props. You’ll feel that pull as your boat climbs onto plane quickly and effortlessly.
• Steady, responsive handling: Its four-blade design keeps your turns tight and predictable, even in choppy water. The prop stays planted, giving you steady traction whether you’re trimming up or cutting across wakes.
• Durability with forgiveness: Made from Mercury’s Mercalloy aluminum, this prop is strong enough to take on demanding conditions yet flexible enough to handle minor bumps without failing.
• Protected performance: The Flo-Torq II Hub Kit acts as a built-in safeguard, absorbing shock from small underwater strikes and helping prevent drivetrain damage.
• Low maintenance, high endurance: Designed for long-term reliability, this prop resists corrosion, cleans easily, and performs consistently season after season.

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

If you’re searching for a prop that delivers both performance and dependability, the Mercury SpitFire 4-Blade Aluminum Propeller is a standout choice. It offers the balance of speed and control you’d expect from stainless steel — but at a more accessible price. Crafted with Mercury OEM precision, it’s built by the same experts who design the engines themselves, ensuring a perfect match in performance and reliability.

This prop’s design gives you versatility across a wide range of boats and setups. Whether you’re cruising the lake with family or chasing early morning fishing runs, you’ll appreciate its quick lift, stable handling, and forgiving nature. It’s a prop you can count on — smooth, tough, and made to keep you moving forward without hesitation.

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 delivers the lift and grip of a four-blade with the high-speed performance of a three-blade, combining faster acceleration with smoother handling.

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

If your engine operates within its recommended RPM range using a 23” pitch prop, this model is likely an excellent fit. For best results, check your engine manual or consult a Mercury dealer.

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

Yes. Its Mercalloy aluminum and polished finish are built to withstand both environments. Rinse after saltwater use to maintain its durability and shine.

Q5: What hub system does it use?

It includes the Flo-Torq II Hub Kit (Part Number 835257K1), which helps protect your engine’s drivetrain from most minor impacts.