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Skeg Guard – Fits Yamaha 150-350 HP Outboard (Replaces 27151, Megaware SkegGuard 27151/1902)

Regular price $72.99

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

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This durable Stainless Steel Skeg Guard protects your outboard or sterndrive's lower unit from underwater impacts and ramp dragging. It is designed for a broad range of Yamaha engines, including 150–350 HP Outboard models from 1984–Present and I/O Sterndrive models from 1989–1993.

This part serves as a direct replacement for Yamaha 27151 and Megaware SkegGuard 27151/1902.

  • Simple bolt-on installation with all hardware included.
  • Constructed from corrosion-resistant Marine-Grade 316 Stainless Steel.
  • Features a drain hole and a thickened 3mm lower wear tab for enhanced durability and longevity.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Yamaha 27151
Megaware 27151/1902

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Designed primarily for Yamaha outboards and sterndrives, this skeg guard fits a wide range of models from 1984 to the present.

Additional compatibility for select Mercury and Suzuki models has been reported. Please verify all specifications against your engine, as this fitment is based on supplemental data.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha Various 150–175 2-Stroke 1984–Present 27151
Yamaha Various 150–175 4-Stroke 1984–Present 27151
Yamaha Various (HPDI & VMAX HPDI) 200 2-Stroke 2000–2012 27151
Yamaha 2.8L I-4 200 4-Stroke 2012–Present 27151
Yamaha Various 300 4-Stroke 2007–2009 27151
Yamaha Various 350 4-Stroke 2007–Present 27151
Various I/O Sterndrive 1989–1993 27151
Mercury EFI 225–250 4-Stroke 2003–2005 Compatibility claimed in eBay listing
Suzuki Various 300 4-Stroke 2009 Compatibility claimed in eBay listing
Suzuki Various 250, 300 4-Stroke 2006–2008 Compatibility claimed in eBay listing
Suzuki Various 150, 175, 200, 225 2-Stroke 1986–2002 Compatibility claimed in eBay listing

Technical Specs

Product Type
Skeg Guard / Skeg Protector
Installation
Bolt-on with included hardware
Housing Material
Marine-Grade 316 Stainless Steel
Housing Color
Silver (polished stainless)
Weight
0.69 kg (1.52 pounds)
Fitting Type
Direct bolt-on replacement
Key Feature
Features a drain hole to prevent water pooling and reduce corrosion risk
Durability Feature
Thickened 3mm lower wear tab to reduce ramp dragging
Repair Capability
Can be installed on damaged skegs with as little as 2–3 inches remaining
Warranty
1 Year (per eBay listing)

What’s in the Box

  • 1 x Skeg Guard (27151)
  • 1 x Drill Bit
  • 2 x Nuts
  • 2 x Hex Wrenches
  • 4 x Screws

Installation Notes

  1. Thoroughly clean the surface of the original skeg. File down any burrs or rough areas.
  2. Fit the skeg guard over the skeg to test alignment.
  3. Mark the positions for the mounting holes using the guard as a template.
  4. Remove the guard and drill holes using the provided drill bit.
  5. Apply marine-grade sealant (not included) inside the guard and around the holes to ensure a watertight seal.
  6. Position the skeg guard and install the mounting hardware.
  7. Tighten the nuts and screws securely without over-torquing.
  8. Clean off any excess sealant and let it cure fully before placing the drive in water.

Troubleshooting & FAQ

Will this fit if my skeg is already broken?

Yes, this skeg guard is designed to be installed on damaged skegs. You need at least 2–3 inches of the original skeg remaining to ensure a secure mounting point.

What tools are required for installation?

The package includes a drill bit, screws, nuts, and hex wrenches. You will need a power drill and are advised to use a marine-grade sealant (not included) for a fully waterproof installation.

How does the built-in drain hole work?

The drain hole prevents water from getting trapped inside the guard, reducing the risk of corrosion and damage to your lower unit by allowing it to drain out when the boat is on a trailer or lift.

Is the stainless steel finish durable enough for saltwater?

Yes, it is constructed from marine-grade 316 stainless steel, which offers superior resistance to corrosion and abrasion in both freshwater and saltwater environments.

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.

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