Mercury – Quicksilver Thunderbolt Propeller | High-Performance Prop Series | High-Polished Stainless Steel | QS5008X

Overview

There’s a moment when you ease the throttle forward and the boat just settles into its stride. No drama. No hesitation. Just clean power translating straight into motion. That’s what the Quicksilver Thunderbolt propeller is built for. It’s a prop you trust when you’re running long distances, carrying real load, or leaning on serious horsepower, because it feels planted and predictable no matter how hard you push.

Key Features

• High-performance three-blade propeller engineered for high-horsepower engines

• High-polished Stainless Steel construction for strength and longevity

• Fourteen and three-quarter inch diameter for efficient lift and bite

• Twenty-one inch pitch designed for strong top-end speed

• Precision blade geometry to manage heavy torque loads

• Large diameter profile that works across a wide range of hull designs

• Right hand rotation configuration

• Manufactured to meet Mercury Marine performance standards

Engine & Boat Compatibility

• Ideal for high-horsepower V-six outboard engines

• Commonly used on offshore fishing boats and deep-vee hulls

• Well suited for sterndrive vee-bottom sport boats

• Popular choice for cruisers that balance speed and load

• Frequently used on performance and race-oriented boats

• Requires the correct hub system based on engine application

Performance & Practical Benefits

On the water, the Thunderbolt QS5008X feels solid and confident. Hole shot is controlled, with the blades grabbing clean water instead of slipping under load. As speed builds, the boat stays composed and steady, even when conditions get choppy. The Stainless Steel construction resists flex, which keeps the pitch true and the handling predictable at higher speeds. Throttle response feels tight and immediate, while mid-range cruising stays smooth and efficient. Cleanup is easy after a long day, and the polished finish holds up well against corrosion in both saltwater and freshwater use. It’s the kind of prop that makes the whole boat feel more dialed in.

Why Buy OEM

Choosing a genuine Mercury Marine part like the Thunderbolt propeller means trusting design that’s been proven on the water, not just on paper. This propeller has earned its reputation because it delivers consistent results across demanding applications. Aftermarket props can vary in balance, metallurgy, and blade accuracy, which often shows up as vibration or unpredictable handling. The Thunderbolt is built to perform the same way every time you bolt it on. Over the long run, that reliability saves time, reduces frustration, and protects your drivetrain. It’s advice you’ll hear from boaters who’ve already tried the shortcuts.

FAQ

Which Mercury engines or systems does the Thunderbolt propeller fit?
This propeller is commonly paired with high-horsepower Mercury outboards and compatible sterndrive systems when matched with the correct hub.

What makes this propeller different from aftermarket alternatives?
Its Stainless Steel construction, precise blade geometry, and OEM quality control deliver consistent performance under heavy load.

How do I know if this is the correct propeller for my setup?
Confirm your engine horsepower, rotation direction, desired performance goals, and select the correct diameter, pitch, and hub combination.

Can this be used in both saltwater and freshwater applications?
Yes. The Stainless Steel construction and polished finish perform well in both environments with routine care.

Is installation straightforward for most boat owners?
With the proper hub system, installation is typically straightforward. Professional setup can help fine-tune performance.