• IMPROVE PERFORMANCE

    Get On Plane Faster, Improve Handling, Controls Cavitation & Porpoising

  • PROPELLER PROTECTION

    Shield your Prop From Damage Due to Water Impacts & Line Entanglement

  • SKEG GUARD

    This Outboard Skeg Guard Reinforces Existing Skegs & Replaces Damaged Skegs

  • PEACE OF MIND

    Protects Marine Mammals From Death & Injury Due to Propeller Strikes

Hydro-Shield helps reduce hull drag and porpoising for a faster ride. With our hydrofoil’s fin-like shape, you will steer and navigate water smoothly.

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Made of flexible, high quality material, the Hydro-Shield not only protects the prop from underwater impacts, but also safeguards your skeg with its integrated skeg guards, ensuring long-lasting protection for both your skeg and propeller.

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Let customers speak for us

from 241 reviews
Looks good and sturdy

Going up the river at unknown depth which got to 3’ this gave me a little ease of some protection. It seem to plan out fast as well. Was easy to install.

Randy Tennant
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'

My second Hydro Shield and i am buying another one for my ofher boat. They bolt on fast and it works to protect your prop. I do get on plane quicker. But its hard to tell with a Yacht if i am getting better fuel economy,

Jim
Large Size Fin: 100+ HP, Boats Greater Than 18'
Hydro-shield

I owne a Azure az240 in has a volvo penta with 300 hp and boat has always been slow out of the hole
Installed this unit and definitely help it out, now it's about half the time it took before and don't feel it hurt to pending at all
Great product, easy to install

William Mulligan
Large Size Fin: 100+ HP, Boats Greater Than 18'
All good!

I fish in shallow water and around pesky cab pots. This has saved me already. I need more for prop protection then anything else. This will do it.

Mako 17 pro skiff
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'
HydraShield – Absolute Game Changer for My Mercury 300HP

I recently installed the HydraShield on my twin 300HP Mercury engine, and the difference is honestly night and day. My boat weighs around four tons, and before installing it, I experienced noticeable cavitation and less efficient handling at speed. From the very first run after fitting the HydraShield, everything changed.

The boat now feels smoother, more stable, and significantly more streamlined through the water. Cavitation has virtually disappeared, throttle response feels cleaner, and I’ve even noticed improved fuel efficiency. The handling and overall ride quality are on another level compared to before.

This product has completely transformed the performance of my boat. I’m genuinely impressed with the engineering behind it and couldn’t be happier with the results. If you’re running a larger boat with a Mercury setup and want better efficiency, smoother performance, and a more controlled ride, HydraShield is absolutely worth it.

Highly recommended.

Bruce Wienand
Large Size Fin: 100+ HP, Boats Greater Than 18'

Fantastic!!! Definitely highly recommend. Easy to install, and worth the money.

Jake Chartier
Large Size Fin: 100+ HP, Boats Greater Than 18'

Très bon produit

Keven Foisy
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'
Great Idea.

A great invention to stop damage to the Prop,
Will fit as soon as my new boat arrives..

Brook Wye-Jones
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'
Mercury outboard 150

Its working very good!

Istvan Schütt
Large Size Fin: 100+ HP, Boats Greater Than 18'
Complacido

Mui bueno

Frank R Cordero Lugo
Large Size Fin: 100+ HP, Boats Greater Than 18'

@hydroshieldusa really works, it protect the propeller from a debris at the bottom of the canal as also no more scratches or wear rubbing on the sandbar, also keep the speed on my pontoon no matter the weight added and gets on the plane quicker.

Luis Aponte
Hydro-Shield
Works well!

Easy install, and planes out nicely. Improved performance overall. Very pleased!

Michael Nowicki
Large Size Fin: 100+ HP, Boats Greater Than 18'

Works amazing!

Patrick Zylla
Large Size Fin: 100+ HP, Boats Greater Than 18'
Party pontoon

At the time of this review, April 21, ‘26, my “new to me” motor is on a stand still in my warm shop! BUT, I did manage to install my new hydro-shield. And installation was a breeze! Just follow the well written instructions, not Chinese hieroglyphics!! Install took about 45 minutes. Cause I am a firm believer in “measure twice, cut once”!! Def recommend this product!

David Cobb
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'

Great product

Steven
Standard Size Fin: 8.9 - 100 HP, Boats Up to 17'