Stainless Steel Skeg Guard – Fits MerCruiser Alpha One Gen II (Replaces MerCruiser 27031, 1901)
Stainless Steel Skeg Guard – Fits MerCruiser Alpha One Gen II (Replaces MerCruiser 27031, 1901) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Stainless Steel Skeg Guard – Fits MerCruiser Alpha One Gen II (Repl...
Stainless Steel Skeg Guard – Fits MerCruiser Alpha One Gen II (Replaces MerCruiser 27031, 1901) is backordered and will ship as soon as it is back in stock.
Product Details
This stainless steel skeg guard helps protect the lower unit of a sterndrive from impact damage and can also be used to restore protection when the original skeg is damaged. It is designed for MerCruiser Alpha One Generation II sterndrives.
The guard is commonly listed as a replacement for MerCruiser reference numbers 27031 and 1901. Confirm the shape and remaining skeg dimensions on your sterndrive before ordering.
- Designed for a screw-in installation with drilling required.
- Made from mirror-polished 316 marine-grade stainless steel for corrosion resistance in marine environments.
- Includes a lower drain opening to help release trapped water between the guard and skeg.
- Suitable for protecting an intact skeg or covering a damaged skeg when sufficient original skeg remains.
Part Number Matrix
The following numbers are reference numbers associated with this replacement skeg guard. They are provided for identification and cross-reference purposes; verify the physical profile of your original skeg before installation.
| Brand or Reference | Part Number |
|---|---|
| MerCruiser | 27031 |
| MerCruiser | 1901 |
| Panther reference | 35-SS610 |
| Yoursme reference | 27031 |
| SeaSierra reference | 35-SS610 |
Engine & Model Compatibility
Check the complete drive designation and compare the guard with your existing skeg before purchasing. Model-family compatibility alone does not confirm that every drive configuration has the same skeg profile.
| Brand | Model | Rated HP | Years | Reference Numbers | Notes |
|---|---|---|---|---|---|
| MerCruiser | Alpha One Gen II | Not specified | Not specified | 27031, 1901 | For skeg protection or repair where enough original skeg remains for secure mounting |
Technical Specs
- Product Type
- Skeg guard / protector
- Installation
- Screw-in installation; drilling required
- Material
- 316 marine-grade stainless steel
- Finish
- Mirror-polished
- Thickness
- 1.5 mm (0.059 in), with approximately 3 mm (0.118 in) at the lower wear tab
- Design Feature
- Lower drain opening for water release
- Estimated Installation Time
- Approximately 10 minutes, depending on the condition of the skeg and installation access
- Required Remaining Skeg
- Approximately 2–3 inches minimum for secure installation
- Included Installation Items
- Mounting hardware, drill bit, hex/Allen wrench, instructions and Loctite 262 as supplied with the product
What’s in the Box
- 1 x Stainless steel skeg guard
- 1 x Drill bit
- 2 x Nuts
- 4 x Screws
- 1 x Allen wrench
- 1 x Loctite 262
Installation Notes
- Put on protective gloves and secure the boat and sterndrive before beginning work.
- Confirm that the guard profile matches the skeg on your MerCruiser Alpha One Gen II drive.
- Remove loose material and smooth sharp or jagged areas on the damaged skeg so the guard can seat properly.
- Position the guard over the remaining skeg and tap it gently into place with a rubber mallet if necessary. Do not force the guard onto an incompatible profile.
- Use the pre-drilled holes in the guard as a template. Drill the skeg with the supplied 1/4-inch drill bit, then install and tighten the supplied hardware with the hex wrench.
- Follow the adhesive manufacturer's handling and curing instructions when using Loctite 262. Allow the installation to cure as directed before operating the boat.
Troubleshooting & FAQ
Will this skeg guard fit my specific sterndrive?
This guard is intended for MerCruiser Alpha One Generation II sterndrives. Because skeg shape and damage can vary, compare the product profile with your drive and confirm that at least approximately 2–3 inches of original skeg remains before ordering.
How much of the original skeg needs to remain?
Approximately 2–3 inches of original skeg should remain for a secure installation. A severely shortened or extensively damaged skeg may require professional repair or replacement instead.
Does installation require drilling?
Yes. The guard is mounted through drilled holes in the skeg. Use the guard's pre-drilled holes as a template and install the supplied hardware after drilling.
What is the purpose of the drain opening?
The opening allows water to escape from the space between the guard and the skeg. Reducing trapped water can help limit corrosion and reduce the risk of freeze-related damage in cold conditions.
Is this an OEM component?
No. This is an aftermarket stainless steel replacement skeg guard intended for the stated MerCruiser drive application. MerCruiser reference numbers are included for cross-reference and identification only.
Is professional installation recommended?
Yes. Drilling the skeg requires proper alignment and suitable tools. If the skeg is badly damaged or there is not enough material remaining, consult a qualified marine technician before installation.
Safety & Important Information
- Verify the drive model, skeg profile and remaining skeg length before purchase.
- Wear eye protection and gloves during drilling, filing and installation.
- Do not operate the boat until the guard and thread-locking compound have been installed and cured according to the product instructions.
- This is an aftermarket replacement, not an OEM MerCruiser component.
- Professional installation is recommended when the original skeg is severely damaged or access is limited.
About Sea Sierra
- Marine-Focused Products — Replacement components designed for practical maintenance and repair applications.
- Material-Conscious Construction — Selected marine-grade materials are used where corrosion resistance is important.
- Fitment Awareness — Always compare the original component and complete model details before installation.
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