Mercury – Quicksilver Q4 Propeller | 12.7" Diameter x 21" Pitch | Right-Hand Rotation | 4-Blade | Stainless Steel | Polished Finish | 8M0055563

Overview

There’s something about throttling up with the Quicksilver Q4 that just feels right. The boat lifts cleanly, the bow settles, and before you know it, you’re planing smooth and steady — not fighting the wheel or waiting for power to build. It is a propeller that feels confident beneath you, like a well-tuned instrument that responds to every touch. Whether you’re chasing early morning bass or running across a calm bay at sunset, this Mercury propeller delivers the kind of performance that makes you look forward to every launch.

Key Features

• Diameter and Pitch: 12.7" Diameter x 21" Pitch

• Rotation: Right-Hand

• Blade Count: 4-Blade

• Material: Stainless Steel

• Finish: Polished Stainless

• Hub System: Flo-Torq® Hub (interchangeable for versatile fit)

• Design Details: Aggressive 4-blade geometry for exceptional lift and handling

Engine & Boat Compatibility

• Fits most Mercury outboards in the 90–150 horsepower range

• Suitable for select sterndrive applications that benefit from enhanced lift and grip

• Ideal for Bass, Multi-Species, Fish and Ski, Center Console, Bay, and Pontoon boats

Performance Benefits

The Quicksilver Q4 isn’t just built for speed — it’s built for balance. The four-blade design gives your boat a stronger bite on the water, which means you’ll feel that instant lift and quick jump on plane even with heavier loads. Acceleration feels tighter and more deliberate, while cruising remains calm and predictable.

You’ll notice the difference in corners too — the Q4 holds a steady line without slipping or cavitating, giving you that secure “locked in” feel that every boater appreciates. It’s smooth through the chop, forgiving when trimmed aggressively, and remarkably stable when throttled back. Made from stainless steel, it stands up to long seasons of use with little maintenance beyond a quick freshwater rinse. For those who like a prop that performs as well at midrange as it does wide open, this one hits the sweet spot.

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

If you have been running a standard three-blade and wondering what a four-blade could really do, the Quicksilver Q4 is the upgrade that’ll make you a believer. It’s engineered by Mercury, so you’re getting the same trusted quality and precision found across their OEM line. You’ll enjoy stronger lift, better handling in tight turns, and smoother cruising speeds — all while keeping your top-end performance.

This propeller is a practical, reliable choice for boaters who want noticeable performance gains without breaking the bank. It’s versatile enough for family outings and serious fishing alike, and durable enough to handle both saltwater and freshwater environments. With its blend of power, stability, and Mercury-backed craftsmanship, the Q4 makes every run feel refined and controlled.

FAQ Section

Q1: Which Mercury engines does the Quicksilver Q4 fit?

It fits most Mercury outboards between 90 and 150 horsepower, as well as select sterndrive models that benefit from higher lift and grip.

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

The Q4’s four-blade design provides stronger lift and more consistent handling compared to many three-blade models. It delivers faster holeshot and steadier midrange control without sacrificing top-end speed.

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

If your current prop struggles to lift the bow, takes too long to plane, or loses grip in turns, the 12.7" x 21" Q4 could be an ideal fit. It’s designed to balance lift and speed across a wide range of hull types.

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

Yes. Its stainless steel construction and polished finish make it resistant to corrosion, so it performs reliably in either environment.

Q5: What hub system does it use?

 The Q4 uses Mercury’s Flo-Torq® hub system, allowing quick and simple installation with multiple Mercury engine models.