It comes with 4 holes cast into the Stingray device. The instructions say to place the Stingray on the cavitation plate as far forward as it will go and and use the Stingray holes to mark where you will drill mounting holes in the cavitation plate. This plate is usually made of aluminum or hard plastic and won’t be very difficult to drill through. You will need a 1/4 inch drill bit for the holes.

what is the distance between the pre drilled holes?

The distance between the front set of holes and the rear set of holes is 4.0” The distance between the left front hole and right front hole is 4.0” The distance between the left rear hole and right rear hole is 3.875”

Will it fit on a 3.3 merc cruiser 4 cylinder ?

Yes it should. Check stingrays application they do make one for the mercury cruiser I am not sure if the one I purchased for the Yamaha will fit the mer cruiser I see you I think it will but please check with mer cruiser before purchasing

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Marine Dynamics Hydro Tail Stingray

Product ID: 34848934

Details

Brand
STINGRAY
Color
White
Item Weight
3.2 Pounds
Material
Aluminum Steel
Recommended Uses For Product
For Fishing

🔩Easy 4-drill installation

🚤40-300 HP engine range

⚙️Heavy-duty aluminum & stainless steel

Description

🚤 Elevate your boating game—stabilize, save fuel, and own the waves with StingRay!

FITS YOUR RIDE PERFECTLY - Designed for 40-300 HP outboard/outdrive motors, compatible with a wide variety of boats.
PLANE FASTER CRUISE SMOOTHER - Get on plane quicker with superior hydrodynamic lift that outperforms all other stabilizers.
BUILT TO LAST BUILT FOR POWER - Ultra-durable construction reduces vacitation, ventilation, chinewalking, and porpoising for safer, fuel-efficient rides.
EFFORTLESS SETUP INSTANT UPGRADE - Simple 4-drill installation with included mounting hardware—upgrade your boat’s stability in minutes.
PROUDLY AMERICAN ENGINEERED FOR EXCELLENCE - Made in the USA with decades of marine engineering expertise, trusted by thousands of boaters nationwide.

The Marine Dynamics Hydro Tail Stingray Classic Senior is a premium hydrofoil stabilizer fin designed for 40-300 HP outboard and outdrive motors. Crafted from heavy-duty aluminum and stainless steel, it enhances lift to get boats on plane faster while reducing vacitation, ventilation, chinewalking, and porpoising. Easy to install with a 4-drill mounting system, this USA-made hydrofoil improves safety, fuel efficiency, and overall boat performance, making it a top choice for fishing and inflatable boats.

Specifications

ASIN	B001F0MFC0
Brand Name	STINGRAY HYDROFOILS
Color	White
Customer Reviews	4.7 4.7 out of 5 stars (242)
Global Trade Identification Number	00096144006183
Item Weight	3.2 Pounds
Manufacturer	Marine Dynamics
Manufacturer Part Number	SR-2
Material Type	Aluminum, Stainless Steel
Maximum Horsepower	300 Horsepower
Model Number	SR-2
Mounting Type	Engine Mount
Recommended Uses For Product	For Fishing Boats, For Inflatable Boats
UPC	096144006183

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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