Blackfin Replacement Skeg

   

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Size
Model
Quantity Price & availability

8.5" X 10"

BFXS

  • $89.99

  • SKU: 1856085

  • In Stock
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10.5" X 12.5"

BFS

  • $89.99

  • SKU: 1471610

  • In Stock
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13.5" X 14.5"

BFM

  • $89.99

  • SKU: 1471611

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Designed to protect and perform, the Blackfin™ Replacement Skeg is made from durable high-impact nylon composite featuring two tapered wings on each side for structural reinforcement and lift at every angle of engine trim. The Blackfin also features a sacrificial node on the bottom which limits the engine's skeg from plowing into underwater objects, and is shaped to turn the engine slightly on side impacts for more prop protection.

  • Durable, high-impact nylon composite construction
  • Tapered wings on each side for structural reinforcement and lift
  • Sacrificial node on the bottom limits engine's skeg from plowing into underwater objects

To determine the Blackfin model for your engine, measure from the front of the prop to the tip of the gear housing. Simply match this measurement to one of the Blackfin sizes listed below.
Note: The MerCruiser Alpha One when measured falls into the medium category, however it will require a small Blackfin.

Blackfin Replacement Skeg 3.3 5 20 20
Repeat Buyer My second Blackfin Skeg. First one to repair broken fin on used 17.5' Bayliner purchased last year. Skeg 1 ran all season with no issues, really improved driving/turning boat. This season didn't raise motor when trailering, bam, knocked skeg off - shot somewhere into lake, purchased skeg 2 without hesitation. Great inexpensive fix - compared to lower unit, easy to install, but not made to drag bottom or rocks or even a concrete boat ramp. July 23, 2014
blzckfin used all that glue and after about 5 days went out came back and no blackfin May 11, 2014
Skeg This was a $100 mistake. The composite skeg did not fit tight against the skeg on the motor. I had to put additional adhesive to try to hold it on. Needs to have way to bolt or screw on. It last three trips and fell off. July 5, 2013
Blackfin Replacement Skeg I have fished the Rum River in Minnesota for 50 years, has some very rocky places. At some point I think Ive hit everyone of them. I used the Blackfind to repair/replace my old skag on a 25 hp 4stroke Evenruide. Had some doubts about it but was surprised how strong it was. Working our way up river in about a foot of water the skag made contact with the rocky bottom as it did the boat lifted up slightly (I was waiting for the crashing sound the prop usually makes) we idled along perhaps 25 more ft. No prop contact.Slipped into a little deeper water boat settled back to normal.Checked prop at landing looked like new! Would recommend trying if your thinking about a repair/protection for your motor. October 20, 2012
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2 years, 4 months ago
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A: 
Measuring for Fit
To determine the Blackfin model you need, measure from the front of the prop to the tip of the gear housing. Take your horiziontal measurement and match it to the one of the three Blackfin sizes.The Mercruiser Alpha One when measured falls into the medium category; however it will require a Small Blackfin.

Blackfin Small
10.5" to 12.5"

Blackfin Medium
13.5" or 14.5"

Blackfin Large
15.5"

They do not list one to fit a size 17". Thanks
1 year, 8 months ago
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 - Springfield, MO
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2 years, 5 months ago
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A: 
You will need the small item number 38-532-002-00, which fits 10.5" to 12.5". Thanks!
2 years, 5 months ago
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 - Springfield, MO
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for example, does the engine with the blackfin exhibit any different trim or handling characteristics?
5 years, 10 months ago
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A: 
no, it has no performance changes, handling or speed
2 years, 9 months ago
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A: 
Not sure if you still need the answer but since I am on the BLACKFIN PRO STAFF I will find out
3 years, 4 months ago
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 - Sam Rayburn Lake Tx
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A: 
You will need to use 2 Blackfins with dual motors. The steering will be much more sensitive and the boat will jump out of the hole with the Blackfins installed. The horizontal ribs cause you to need less trim to get the bow to the same point instead of just the thrust off the prop. You will love the increase sensitivity in steering while protecting the lower unit and prop.
4 years, 4 months ago
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5 years, 11 months ago
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THEY HAVE GREAT CUSTOMER SERVICE IF YOU WISH TO CALL THEM WITH ANY QUESTIONS (BEFORE OR AFTER YOUR PURCHASE). THE BLACKFIN COMES WITH FULL INSTRUCTIONS. PLUS, BLACKFIN HAS A STEP BY STEP ISTALLATION SLIDE SHOW ON THERE WEB SITE. THE PRODUCT COMES WITH THE SEALANT THAT YOU NEED TO INSTALL IT. JUST ROUGH UP THE SURFACE OF YOUR SKEG WITH SOME SANDPAPER. FILE DOWN ANY ROUGH EDGES OR GOUGES. APPLY THE SEALANT TO THE SKEG AS DIRECTED. PUT THE BLACKFIN ON. RUN A BEAD OF SEALANT ALONG THE EDGES WHERE THE BLACKFIN MEETS THE LOWER UNIT AND SMOOTH IT OUT. WIPE OFF THE EXCESS THAT OOZES OUT OF A COUPLE OF SMALL HOLES ON THE SIDES. TAPE IT IN PLACE WHILE THE SEALANT CURES. AND THAT IS PRETTY MUCH IT.
4 years, 5 months ago
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 - FORT WAYNE, IN
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A: 
The picture in the ad is a 225 EFI so yes it will fit fine. A flexible marine adhesive hold it in place and will absorb the impact
5 years, 11 months ago
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5 years, 11 months ago
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Glue very stout glue
3 years, 4 months ago
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 - Sam Rayburn Lake Tx
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A: 
Marine adhesive included in package. Follow instructions and clean and scuff inside of Blackfin thoroughly as well as skeg. Allow plenty of time for adhesive to harden (a week would be about right).
4 years, 2 months ago
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 - Dayton, Ohio
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A: 
A flexible urethane adhesive bonds the Blackfin to the lower unit and absorbs the impact throughout the lower gearcase instead of just the point of impact.
4 years, 4 months ago
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A: 
it is held on with adhesive, fits over existing skeg.
5 years, 10 months ago
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5 years, 11 months ago
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A: 
Yes, with adhesive but it doesn't hold
2 years, 9 months ago
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A: 
The Blackfin slides over the existing skeg and is attached with a flexible marine adhesive that absorbs the impact before it reaches your lower unit. Anything else is just a cover.
4 years, 3 months ago
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THEY HAVE GREAT CUSTOMER SERVICE IF YOU WISH TO CALL THEM WITH ANY QUESTIONS (BEFORE OR AFTER YOUR PURCHASE). THE BLACKFIN COMES WITH FULL INSTRUCTIONS. PLUS, BLACKFIN HAS A STEP BY STEP ISTALLATION SLIDE SHOW ON THERE WEB SITE. THE PRODUCT COMES WITH THE SEALANT THAT YOU NEED TO INSTALL IT. JUST ROUGH UP THE SURFACE OF YOUR SKEG WITH SOME SANDPAPER. FILE DOWN ANY ROUGH EDGES OR GOUGES. APPLY THE SEALANT TO THE SKEG AS DIRECTED. PUT THE BLACKFIN ON. RUN A BEAD OF SEALANT ALONG THE EDGES WHERE THE BLACKFIN MEETS THE LOWER UNIT AND SMOOTH IT OUT. WIPE OFF THE EXCESS THAT OOZES OUT OF A COUPLE OF SMALL HOLES ON THE SIDES. TAPE IT IN PLACE WHILE THE SEALANT CURES. AND THAT IS PRETTY MUCH IT.
4 years, 5 months ago
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 - FORT WAYNE, IN
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A: 
This is attached to your existing skeg with a strong adhesive. However, my Blackfin fell off after a short time and I replaced it with a much better product. Picture attached...
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5 years, 9 months ago
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 - South Florida
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Broke part of the existing Skeg off. Is there two sides to this? Does this fit a Mercery 40 HP motor?
6 years, 3 months ago
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This is a seamless one piece composite. Measure the lower unit from the prop forward to determine the fit.
4 years, 3 months ago
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A: 
Yes the Skeg has two sides. To determine which Blackfin Replacement Skeg is right for your engine model, simply measure from the front of the prop to the tip of the gear housing.
6 years, 3 months ago
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