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Attwood

Attwood Outboard Motor Hydro-Stabilizer 9401-7

Based on 361 reviews
Condition: New
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$25.86
Holiday Deal · 17% off was $31.07

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At a glance

Condition
New
Model
9401-7
Dimensions
8.5 x 12 x 8.75 in
Color
Unspecified
Material
other
Package Weight
0.66 kg
Suggested Users
unisex-adult
In the box
End Product & Information

Features 5

  • Improve planing performance and stability
  • For Use on outboards under 50 horsepower
  • Designed from engineered molded resins, the hydro-stabilizers helps to get up on plane, reduces ventilation/cavitation and poor handling
  • The hydro-stabilizer out-performs ordinary flat hydrofoils by reducing drag when the hull goes on plane

Specs 14

Item Package Dimensions L x W x H 8.7 x 8.5 x 2.3 inches
Package Weight 0.66 Kilograms
Item Dimensions LxWxH 8.5 x 12 x 8.75 inches
Brand Name Attwood
Model Name Attwood Boat Fuel Filters
Color Unspecified
Material other
Suggested Users unisex-adult

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Top Amazon Reviews

They Work
They were not easy to install on a 9.9 hp motor, mainly because the propeller and engine gets in the way. I am not sure if the manufacturer can do anything about this. They do help get my boat to plane, but they are not a miracle cure. Before I got them I had to go all the way forward in my dinghy to get the boat to plane, now I just have to lean a bit forward. So they are not a miracle cure, my motor is on a 10 foot inflatable with giant 18 inch tubes and getting that boat to plane is a difficult task. ... show more
Reviewed in the United States on October 3, 2023 by Dadeo
Worked like a charm 40hp Evinrude 4 stroke
Works wonders got up on plane right away and stable my crestliner fishhawk 1600 with evinrude 40hp 4 stroke outboard. Was able to go from 19-20 mph on aluminum props and on a stainless steel prop to 25-26mph wow unbelievable.
Reviewed in the United States on September 5, 2023 by M.Xiong
Very Pleased! Boat is able to easily get on plane
Review Image by McG (MLG) McG (MLG)
Review Image by McG (MLG) McG (MLG)
Review Image by McG (MLG) McG (MLG)
I have a new Tohatsu 6hp (MFS6DWDS) on my Sea Eagle 437ps, 14' inflatable. I was not able to get on plane with 1 person. It would go on plane with 2 people, because of the additional weight closer to the front. Yesterday, I installed the Attwood 94017 Hydrofoil, then took it out for 4 hours of fishing and testing. The boat was on plane pretty quickly and at less than 1/2 throttle with only me on the boat. Now the boat planes with 1 or 2 people, no problem. I am very pleased! ... show more
Reviewed in the United States on July 11, 2023 by McG (MLG) McG (MLG)
Boat on plane
Made a big difference on my 16 flatbottom
Reviewed in the United States on June 20, 2023 by Robert
Does not work well for me
I have a 2021 Suzuki 6HP short shaft and I am have 10ft jon boat. My motor has an anode next to the shaft where the hydrofoil would sit on. So I had to cut a portion of the fin. I was able to attach the fins on to the motor. 1. It does work to get on plane just a tad quicker. 2. I tested the speed, it decreased my boat speed by 2-3mph ! 3. When on plane, the whole boat seems to be 'sliding' left and right a bit. May be because of jon boat ? Well, I decided to take it off, and since I already made a cut on one of the fin, I can't return it. May be this will work much better with larger motor and also NOT jon boat ?? ... show more
Reviewed in the United States on August 8, 2022 by MDJ
Bought as a temproary fix, and now can't see a reason NOT to have one.
I bouth this to help with cavitation that was occuring due to the shaft on the 15 HP Honda motor I bought for a 13' Whaler being too long for the notched stern of the whaler. I put this pair together in July thinking I would eliminate the nocch in the stern of the whaler by building it up with fiberglass (and in raising the engine/stern height 5") this Fall. Without modification the boat took FOREVER to plane, and even when it did, the cavitation created tons of backsplash over the stern. I bought Hydrostabilizer Jr. hoping to achieve plane easier and reduce the cavitation, but did not expect the results I got from this purchase! The first one I recieved was clearly used and repackaged, so I sent it back and got another. The replacement had some slight defect in the plastic molding that required a little sanding in the gap that fits over theoutboard's fins to make them seat properly on the engine. Once I overcame those issues, this product worked better than advertised for my situation. The boat planes very quickly, and while there is still backsplash over the stern, it is minimal compared to before. I chose not to wait until fall to raise the engine and purchased an adjustable stern plate that raises the engine to meet my required height at the stern, and am now extremely happy with the way the Hydrostabilizer Jr has improved my boat's performance. ... show more
Reviewed in the United States on August 30, 2015 by Bill
Mout towards rear of cavatation plate
Noticable quicker plane and better handling
Reviewed in the United States on October 15, 2022 by Cody
Holy Smokes Batman
Damn these things are awesome! 9.9HP Honda outboard on a 8’10” dinghy and wouldn’t plane with two people and some laundry. I put these on today and I don’t think the boat hardly touches the water. Highly recommend! Buy a 12” bit holder extension to drill the holes so you don’t have to remove the prop. I installed mine on a beach with the motor still on the dinghy. Took me maybe 10mins. ... show more
Reviewed in the United States on December 31, 2021 by Chuck
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