Skeg Guard Protector – Fits MerCruiser Alpha 1 Drive 1985–1990 (Replaces 27021, 1907)

Skeg Guard Protector – Fits MerCruiser Alpha 1 Drive 1985–1990 (Replaces 27021, 1907)

This skeg guard is designed to protect and repair damaged skegs on MerCruiser Alpha 1 stern drives from 1985–1990. Made of heavy-duty 316 marine-grade stainless steel, this protector offers a robust solution to prevent expensive lower unit repairs and can be installed on skegs with as little as 2-3 inches remaining.

It serves as a direct replacement for MerCruiser part numbers 27021 and 1907, as well as Panther Safe-Skeg 35-SS605 and Sierra 35-SS605, ensuring broad compatibility for the specified models.

• Easy Installation: Bolt-on design requires drilling two small holes using the included drill bit.
• Superior Durability: Constructed from 1.5mm thick 316 marine-grade stainless steel, making it 50% thicker than many competing products.
• Complete Kit: Includes all necessary mounting hardware, a drill bit, hex wrenches, and Loctite for a secure installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Skeg Guard/Protector
• 1 x Drill bit
• 2 x Nuts
• 2 x Hex wrenches
• 4 x Screws
• 1 x Loctite 262 (adhesive)

Installation Guide

1. Position the Protector: Slide the skeg protector firmly onto your existing skeg until it is seated securely.
2. Drill Mounting Holes: Using the included drill bit, drill through the pre-drilled holes in the skeg guard and into your skeg.
3. Secure with Hardware: Apply the included Loctite to the screw threads, insert the screws, and tighten them firmly with the provided hex wrenches to complete the installation.

Troubleshooting & FAQ

Q: How do I know if this skeg guard will fit my MerCruiser drive?

A: This skeg guard is specifically designed for MerCruiser Alpha 1 stern drives manufactured between 1985 and 1990. Please verify your drive model and year before ordering. It can be installed on damaged skegs with as little as 2-3 inches of the original skeg remaining.

Q: Is this an OEM MerCruiser part?

A: No, this is an aftermarket skeg guard designed to meet or exceed OEM specifications. It is made from 1.5mm thick 316 marine-grade stainless steel, which is 50% thicker than many competing products for enhanced durability.

Q: How does the drain hole feature work?

A: The built-in drain hole allows water to escape from the skeg guard. This prevents water from getting trapped, which reduces the risk of corrosion and damage from freezing in cold climates.

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?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.