Stainless Steel Skeg Guard – Fits MerCruiser Alpha One Gen II (Replaces 27031, 1901)
This stainless steel skeg guard is designed to fit MerCruiser Alpha One Generation 2 stern drives from 1991 to the present. It serves as an effective solution for protecting a new skeg or repairing one that is already damaged, requiring a minimum of 2-3 inches of the original skeg to remain for proper installation.
It provides a direct replacement for several OEM and aftermarket part numbers, including MerCruiser 27031, MerCruiser 1901, Panther 35-SS610, Yoursme 27031, and SeaSierra 35-SS610.
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Installation Method: Screw-in installation (drilling is required).
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Material: Constructed from 316 marine-grade stainless steel with a mirror-polished finish.
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Complete Kit: Includes all necessary mounting hardware, a hex wrench, and Loctite 262 for a secure fit.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| MerCruiser |
27031 |
| MerCruiser |
1901 |
| Panther |
35-SS610 |
| Yoursme |
27031 |
| SeaSierra |
35-SS610 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand |
Model |
Rated HP |
Years |
OEM Part No. |
Notes |
| MerCruiser |
Alpha One Gen II |
Up to 300 HP |
1991–Present |
27031, 1901 |
Can be used for new skeg protection or repair of damaged skeg |
Technical Specifications
| Specification |
Value |
| Product Type |
Skeg Guard/Protector |
| Installation |
Screw-in (drilling required) |
| Material |
316 Marine Grade Stainless Steel |
| Finish |
Mirror-polished |
| Thickness |
1.5mm (0.059 in) / 3mm (0.118 in) at lower wear tab |
| Design Features |
Drain hole at bottom to prevent corrosion and freezing |
| Installation Time |
Approximately 10 minutes |
| Required Remaining Skeg |
Minimum 2-3 inches |
| Warranty |
12 months (Yoursme brand) |
Package Contents
- 1 x Skeg Cover Guard
- 1 x Drill bit
- 2 x Nuts
- 4 x Screws
- 1 x Allen wrench
- 1 x Loctite 262 (Note: included with Panther brand only)
Installation Guide
- Put on gloves to ensure safety.
- Confirm the keel guard model matches the skeg plate on your engine.
- Flatten any spikes or jagged edges on your existing skeg to allow for an easy fit.
- Gently tap the skeg guard on with a rubber mallet until the fit is perfect.
- Using the pre-drilled mounting holes on the guard as a template, drill holes into your skeg with the provided 1/4-inch drill bit and install the hardware using the hex wrench.
Troubleshooting & FAQ
Q: How do I know if this skeg guard will fit my MerCruiser drive?
A: This guard is specifically designed for MerCruiser Alpha One Generation 2 stern drives manufactured from 1991 to the present. For a successful installation, you must have at least 2-3 inches of your original skeg remaining. We strongly recommend comparing the product images to your part before ordering to ensure a match.
Q: Do I need to drill holes to install this?
A: Yes, installation requires drilling into your existing skeg. The package includes a drill bit, mounting hardware, and instructions to guide you through the process, which typically takes about 10 minutes.
Q: What is the purpose of the drain hole at the bottom?
A: The drain hole prevents water from becoming trapped inside the guard. This design feature helps protect your skeg from corrosion and, in colder climates, prevents damage that can be caused by freezing water.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.