Skeg Protector – Fits Mercury/Mariner 75-300 HP (Replaces 27211)

Skeg Protector – Fits Mercury/Mariner 75-300 HP (Replaces 27211)

This skeg protector is designed for Mercury/Mariner 75-300 HP outboards (2-Stroke & 4-Stroke) from 1996 to the present. It provides robust protection for your lower unit's skeg against damage from ramp dragging, rocks, concrete, and submerged debris. Rest assured, this guard helps prevent costly repairs and maintains the performance of your engine.

This component is a direct replacement for Mercury/Mariner part numbers 27211, 99021, and 254-27211, as well as KeelGuard SkegGuard 27211.

• Durable Construction: Made from 316 marine-grade stainless steel for maximum corrosion resistance.
• Easy Installation: Features a simple slide-on design with self-locking hardware, requiring no welding or drilling.
• Enhanced Protection: Includes a 3mm thick lower wear plate for added durability and a drain hole to prevent water buildup, corrosion, and freezing.

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 Stainless Steel Skeg Protector (27211/99021)
• 1 x Hardware Installation Kit (includes self-locking bolts and hex wrenches)

Installation Guide

1. Check Your Skeg: Before starting, confirm that you have at least 2-3 inches of your original skeg remaining. This is required for the protector to mount securely.
2. Clean the Surface: Thoroughly clean the skeg of any marine growth, dirt, or grime to ensure a snug fit.
3. Position the Guard: Slide the skeg protector firmly onto the skeg until it is fully seated.
4. Align and Secure Hardware: Align the mounting holes on the protector with the threaded holes. Insert the included self-locking bolts.
5. Tighten Bolts: Using the provided hex wrenches, tighten the bolts evenly until the skeg protector is held firmly in place. Do not overtighten.

Troubleshooting & FAQ

How do I know if this skeg guard will fit my specific Mercury engine?
This skeg guard fits a wide range of Mercury/Mariner 75-300 HP outboards (1996-Present). To ensure a perfect match, please consult the "Compatible Engine Models" table on this page. Crucially, you must have at least 2-3 inches of your original skeg remaining for proper installation.

Is this a full replacement skeg or a cover?
This product is a skeg protector, designed to slide over and protect your existing, damaged or undamaged, skeg. It is made from high-polish, 316 marine-grade stainless steel and features a thickened wear plate for superior durability compared to a standard OEM skeg.

Is any drilling, welding, or adhesive required for installation?
No. This skeg guard features a drill-free, slide-on design. It mounts to the skeg using the included self-locking bolts and hex wrenches, making installation a straightforward mechanical process that takes only a few minutes.

OEM vs. Aftermarket?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.