Skeg Repair Guard – Fits MerCruiser Alpha 1 1985-1990 (Replaces 27021)
Skeg Repair Guard – Fits MerCruiser Alpha 1 1985-1990 (Replaces 27021) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Skeg Repair Guard – Fits MerCruiser Alpha 1 1985-1990 (Replaces 27021)
Product Details
This Skeg Repair Guard is a durable, bolt-on protector crafted from marine-grade 316 stainless steel. It is specifically designed to fit MerCruiser Alpha 1 stern drives manufactured between 1985 and 1990, offering a reliable solution for repairing or preventing skeg damage.
It serves as a direct replacement for QUICKMARINE 27021, YCCOREE 27021, and Megaware SkegGuard 27021/1907.
- Installs easily in under 10 minutes with the included bolt-on hardware.
- Constructed from polished, marine-grade 316 stainless steel for superior corrosion resistance.
- Features a drain hole to prevent water stagnation and a 3mm thickened wear tab for enhanced protection.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| QUICKMARINE | 27021 |
| YCCOREE | 27021 |
| Megaware SkegGuard | 27021/1907 |
| MerCruiser (OEM) | 27021 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This skeg guard is designed for select MerCruiser Alpha 1 models.
| Brand | Model | Years | OEM Part No. | Notes |
|---|---|---|---|---|
| MerCruiser | Alpha 1 | 1985–1990 | 27021 | Can be installed with as little as 2-3 inches of skeg remaining |
Technical Specs
- Product Type
- Skeg Repair Guard/Protector
- Installation
- Bolt-On (DIY installation with included tools)
- Connection
- Self-drilling screws and nuts
- Housing Material
- Marine Grade 316 Stainless Steel
- Housing Color
- Silver (polished stainless)
- Dimensions
- 12.36 × 6.38 × 1.5 inches (313.9 × 162.1 × 38.1 mm)
- Weight
- 1.34 pounds (0.61 kg)
- Warranty
- 3 years (per Megaware)
- Other Technical Attributes
- Includes drain hole to prevent corrosion and water stagnation; 3mm thickened lower wear tab for enhanced protection
What’s in the Box
- 1 x Skeg Guard (27021)
- 1 x Drill Bit
- 2 x Nuts
- 2 x Hex Wrenches
- 4 x Screws
Installation Notes
- Position the skeg guard over the damaged or existing skeg to ensure a proper fit.
- Using the marks on the guard as a guide, drill holes with the included drill bit.
- Insert the screws and securely fasten them with the provided nuts and hex wrenches.
- Check for a tight, secure fit. The entire process typically takes less than 10 minutes.
Troubleshooting & FAQ
How do I know if this skeg guard will fit my stern drive?
This guard is specifically for MerCruiser Alpha 1 models from 1985 to 1990. Please verify your drive's model and year. It replaces OEM part number 27021. If you are unsure, compare the visual images to your existing skeg.
How much of my original skeg do I need for installation?
You can successfully install this skeg guard with as little as 2 to 3 inches of the original skeg remaining. It is designed to cover and protect the damaged area while restoring the original profile.
What is the purpose of the drain hole?
The drain hole at the bottom of the guard prevents water from collecting inside. This feature helps to minimize corrosion and water stagnation, extending the life of both the skeg guard and your lower unit.
What's the difference between this 316 stainless guard and an original skeg?
This guard is made from marine-grade 316 stainless steel, which offers excellent corrosion resistance, often superior to the aluminum used in original skegs. It acts as a protective shield and is significantly more durable against impacts from rocks or underwater debris.
How should I care for the skeg guard after installation?
The 316 stainless steel is very low maintenance. Periodically rinse it with fresh water, especially after use in saltwater, and check that the mounting hardware remains tight.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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