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FLASHSALE26

Outboard Motor Cover – Fits Mercury, Yamaha, Honda 5-20 HP Engines (Replaces Various OEM Covers)

Regular price $19.89

Worry-free returns

Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

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.


Tracking information will be provided once your order ships.

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 heavy-duty Outboard Motor Cover – Fits Mercury, Yamaha, Honda 5-20 HP Engines is designed to protect small outboard motors in the 5–20 HP range, fitting various 4-stroke models. Constructed from waterproof 420D Oxford fabric with a PVC coating, it offers comprehensive protection against weather, UV rays, and environmental hazards.

  • Easy slip-on installation with a secure drawstring closure.
  • Protects against rain, sun, dust, and scratches in any environment.
  • Includes a convenient storage bag for when the cover is not in use.

Engine & Model Compatibility

Confirm your engine horsepower in the table below. This cover offers a universal fit for the specified 4-stroke engine sizes across brands.

Mercury, Yamaha, & Honda: Fits various 4-stroke models from 5 HP to 20 HP. Compatibility is based on engine size, not specific model years.

Brand Model Rated HP Stroke Notes
Mercury Various 5 4-Stroke Universal fit
Mercury Various 8 4-Stroke Universal fit
Mercury Various 9.9 4-Stroke Universal fit
Mercury Various 15 4-Stroke Universal fit
Mercury Various 20 4-Stroke Universal fit
Yamaha Various 5 4-Stroke Universal fit
Yamaha Various 8 4-Stroke Universal fit
Yamaha Various 9.9 4-Stroke Universal fit
Yamaha Various 15 4-Stroke Universal fit
Yamaha Various 20 4-Stroke Universal fit
Honda Various 5 4-Stroke Universal fit
Honda Various 8 4-Stroke Universal fit
Honda Various 9.9 4-Stroke Universal fit
Honda Various 15 4-Stroke Universal fit
Honda Various 20 4-Stroke Universal fit

Technical Specs

Product Type
Full Outboard Motor Cover
Installation
Slip-on with drawstring closure
Material
420D Oxford Fabric with PVC Coating
Waterproof
Yes
UV Protection
Yes
Color
Black
Dimensions
29" × 49" (74 × 125 cm)
Compatible HP Range
5–20 HP
Closure Type
Drawstring with tightening cord
Protection Features
Weather-resistant, scratch-resistant, dust protection
Storage
Includes storage bag

What’s in the Box

  • 1 x Outboard Boat Motor Cover
  • 1 x Storage Bag

Installation Notes

Installation is straightforward. Tilt the outboard motor up, slide the cover over the engine cowling from top to bottom, and ensure it is seated correctly. Pull the drawstring at the bottom hem to tighten the cover securely around the motor leg, preventing it from blowing off in windy conditions. Tie off the cord to secure it.

Troubleshooting & FAQ

Will this cover fit my 15 HP 2-stroke motor?

This cover is designed primarily for 4-stroke motors in the 5–20 HP range. While it may fit some 2-stroke models due to its universal dimensions (29" × 49"), we cannot guarantee a perfect fit. Please measure your engine cowling and compare it to the cover dimensions before ordering.

Is this cover suitable for trailering?

Yes, the heavy-duty fabric and secure drawstring closure are designed to keep the cover in place during trailering. Ensure the drawstring is tightened and securely tied to prevent it from coming loose at high speeds.

How do I clean the cover?

Clean the cover with cool water and a soft-bristled brush. Avoid using harsh chemical cleaners or detergents, as they can degrade the waterproof PVC coating and fabric. Allow it to air dry completely before storing it in the included bag.

When should I replace my motor cover?

Replace your cover if you notice signs of significant wear, such as rips, punctures, faded or brittle fabric, or a loss of water-repellency. A compromised cover will no longer provide effective protection against UV rays, water, and debris.

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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