Skeg Guard Repair Kit – Fits Mercury/Mariner 75–300 HP Outboards (Replaces 27211)
Skeg Guard Repair Kit – Fits Mercury/Mariner 75–300 HP Outboards (Replaces 27211) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Skeg Guard Repair Kit – Fits Mercury/Mariner 75–300 HP Outboards (R...
Skeg Guard Repair Kit – Fits Mercury/Mariner 75–300 HP Outboards (Replaces 27211) is backordered and will ship as soon as it is back in stock.
Product Details
This Skeg Guard Repair Kit for Mercury and Mariner 75–300 HP outboards is intended to help repair and protect a partially damaged skeg from contact with rocks, submerged debris, and ramp surfaces. The listed application range includes selected 2-stroke and 4-stroke models from 1999 onward. Always compare your engine model, year, horsepower, gearcase configuration, and remaining skeg dimensions before ordering.
This aftermarket replacement is listed as a replacement for Mercury part number 27211. It is also referenced in aftermarket listings as KeelGuard 27211 and SupremeMarine 1905; these references should be used for comparison only and do not replace a physical fitment check.
- Bolt-on installation using the supplied mounting hardware.
- Marine-grade 316 stainless-steel construction with a mirror-polished silver finish.
- Drain hole helps prevent water from collecting inside the guard.
- Thickened 3 mm lower wear tab is intended to reduce wear from ramp dragging.
Part Number Matrix
Use the references below as cross-reference information and confirm the original part and application before purchase.
| Brand | Part Number |
|---|---|
| Mercury | 27211 |
| KeelGuard | 27211 |
| SupremeMarine | 1905 |
Engine & Model Compatibility
The applications below are listed fitment references rather than a substitute for checking the complete engine model and gearcase configuration. Verify the model, year, horsepower, stroke, serial range where applicable, and available skeg length before installation.
| Brand | Model | Rated HP | Stroke | Years | Reference Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Command Thrust & SeaPro | 75, 90, 115 | 4-Stroke | 2014–Present | 27211 | 4.25-inch gearcase; listed reference |
| Mercury | Verado | 135, 150, 175, 200, 225 | 4-Stroke | 2005–2018 | 27211 | 4.8-inch gearcase; listed reference |
| Mercury | Pro XS & SeaPro | 150 | 4-Stroke | 2019–Present | 27211 | 4.8-inch gearcase; listed reference |
| Mercury | Optimax & Pro XS | 200, 225, 250 | 2-Stroke | 1999–2018 | 27211 | Listed without Torquemaster application |
| Mercury | PRO Verado | 200, 250, 300 | 4-Stroke | 2015–2018 | 27211 | 4.8-inch gearcase; listed reference |
Technical Specs
- Product Type
- Skeg guard repair and protection kit
- Installation
- Bolt-on installation
- Connection
- Vehicle-specific replacement fit
- Material
- Marine-grade 316 stainless steel
- Finish
- Silver, mirror-polished
- Application
- Selected Mercury and Mariner outboards rated from 75 to 300 HP
- Environment
- Marine environments, subject to correct installation and maintenance
- Additional Features
- Bottom drain hole and thickened 3 mm lower wear tab
What’s in the Box
- 1 x Skeg guard
- 1 x 1/4-inch drill bit
- 2 x Nuts
- 2 x Hex wrenches
- 4 x Screws
- 1 x Threadlocker sealant
Installation Notes
- Confirm that at least 2–3 inches of the original skeg remains and that the guard matches the skeg and gearcase profile.
- Clean the skeg thoroughly and remove debris, corrosion, paint buildup, and marine growth from the installation area.
- Slide the skeg guard onto the remaining skeg and confirm that it sits fully and evenly.
- Mark the mounting-hole locations through the pre-drilled holes in the guard.
- Remove the guard and drill the marked holes with the included 1/4-inch drill bit.
- Apply the threadlocker sealant to the mounting-screw threads as directed by the sealant manufacturer.
- Reinstall the guard and tighten the screws and nuts with the supplied tools. Do not overtighten or damage the skeg.
- Before launching, check that all fasteners are secure and that the guard does not interfere with the propeller, gearcase, or steering movement.
Troubleshooting & FAQ
How do I know if this skeg guard will fit my engine?
Compare your complete Mercury or Mariner engine model, horsepower, year, stroke, gearcase configuration, and remaining skeg length with the listed applications. A minimum of approximately 2–3 inches of original skeg is required for the described installation. If the gearcase or skeg profile differs, do not rely on horsepower alone to determine fitment.
What is the advantage of 316 stainless steel?
316 stainless steel is commonly selected for marine hardware because it offers strong corrosion resistance in freshwater and saltwater environments. Regular rinsing and inspection are still recommended, especially after saltwater use.
Can I install this myself?
The described installation is a bolt-on process that requires drilling the remaining skeg and securing the supplied fasteners. Installation should be performed only by someone who can safely support the boat and correctly inspect the completed repair. Consult a qualified marine technician if the skeg is severely damaged or fitment is uncertain.
Does this skeg guard affect performance?
A correctly fitted and securely installed guard is intended to protect the skeg while maintaining normal gearcase operation. Incorrect fitment, loose hardware, or a damaged gearcase can affect handling and safety, so inspect the installation before operation.
What is the purpose of the drain hole?
The bottom drain hole allows water to escape from inside the guard and helps reduce water retention after use.
Is this an OEM part?
No. This is an aftermarket replacement and is not manufactured by Mercury or Mariner. The number 27211 is provided as a replacement reference, not as a statement that this product is an original-equipment component.
What are your shipping speed and cost?
Typical standard transit is 5–15 days, and standard shipping is offered at no additional charge where available. Expedited options, delivery estimates, and any location-specific charges are shown at checkout.
What is the warranty and return policy?
Returns are subject to the applicable store policy and condition requirements. For warranty or product-support questions, contact customer support with your order details and photographs of the product and installation area.
Safety & Important Information
- Confirm the engine model, year, horsepower, stroke, gearcase configuration, and skeg dimensions before purchasing.
- Do not install the guard on a skeg that is too short, severely cracked, loose, or otherwise unable to support the repair.
- Support the boat safely during installation and inspect all fasteners before launching.
- This is an aftermarket replacement part, not an OEM component.
- Professional installation is recommended when fitment or structural condition is uncertain.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts selected for practical fit, durable materials, and real-world marine use.
- Fast Global Fulfillment — Free standard delivery is available to most regions, with typical transit of 5–15 days.
- Manufacturer-Direct Value — We aim to provide practical replacement solutions at competitive prices.
Payment & Security
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