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Outboard Motor Cover for 20–30 HP Engines – Universal Fit

Sale price $25.99 Regular price $41.00

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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@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This heavy-duty waterproof outboard motor cover is designed to help protect compatible boat engines in the 20–30 horsepower range from water, sunlight, dust, and general exposure during storage or transport. Its durable 600D Oxford polyester construction provides a practical protective layer for everyday marine use.

The universal-style design is intended for many outboard motors within the specified horsepower range. Because cowling shapes and dimensions vary between engines, measure your motor before ordering to confirm that the cover will fit properly.

  • Installation: Slip the cover over the engine and secure it with the drawstring closure and adjustable straps.
  • Use: Suitable for storage and transport when properly secured.
  • Included: One outboard motor cover and one matching storage bag.

Engine Compatibility

This cover is designed for the general size profile of many 20–30 HP outboard motors. It may be suitable for engines from brands such as Yamaha, Mercury, Honda, and Suzuki when the engine dimensions match the cover dimensions. Brand or horsepower alone does not guarantee fitment, so compare your engine cowling measurements before purchase.

Technical Specifications

Product Type
Full outboard motor cover
Intended Engine Range
20–30 HP outboard motors
Installation
Slip-on design with drawstring closure and adjustable straps
Material
600D Oxford polyester fabric with PU coating
Water Protection
Water-resistant protective cover for storage and transport
UV Protection
Designed to help reduce exposure to sunlight and UV damage
Wind Protection
Adjustable straps help keep the cover secure
Color Options
Black, gray, or navy, depending on available variation
Reflective Elements
Reflective safety strips
Approximate Dimensions
26.7 × 15 × 22.8 inches (68 × 38 × 58 cm)
Trailer Use
Designed for transport when correctly fitted and secured

What’s in the Box

  • 1 × Outboard motor cover
  • 1 × Storage bag

Installation Notes

  1. Make sure the engine is completely cool before installing the cover.
  2. Clean the engine cowling and remove dirt or debris that could damage the fabric.
  3. Slide the cover over the outboard motor from top to bottom.
  4. Pull the drawstring at the base until the cover is snug around the engine.
  5. Secure the adjustable straps and check that the cover cannot flap excessively during transport.
  6. Confirm that the cover does not interfere with any required controls, vents, or moving parts.

Troubleshooting & FAQ

How do I choose the right size cover?

This cover is intended for many 20–30 HP engines, but horsepower is only a general guide. Measure the length, width, and height of your engine cowling and compare them with the approximate cover dimensions of 26.7 × 15 × 22.8 inches (68 × 38 × 58 cm) before ordering.

Will this cover fit my specific brand of motor?

It may fit compatible Yamaha, Mercury, Honda, Suzuki, and other outboard motors within the general 20–30 HP size range. Fit depends on the actual cowling dimensions and shape, not the brand or horsepower rating alone. Verify measurements before purchase.

Can this cover be used while the motor is running?

No. This is a storage and transport cover only. Remove it completely before starting or operating the engine to help prevent overheating, restricted airflow, and damage.

Is this cover suitable for transport or trailering?

The cover is designed for transport when it is correctly sized, fully fitted, and secured with its drawstring and adjustable straps. Check the cover and straps before and during transport, and do not use it if it is loose or obstructs required equipment.

How do I clean and maintain the cover?

Use a soft brush with mild soap and clean water. Avoid harsh chemicals, abrasive cleaners, and high heat. Allow the cover to air dry completely before placing it in the storage bag. Store it in a clean, dry location when not in use.

What makes 600D Oxford polyester suitable for this cover?

600D Oxford polyester is a durable woven fabric commonly used for protective covers. It offers useful resistance to everyday wear and exposure while remaining practical for storage and transport applications.

Is this an OEM cover?

This is an aftermarket universal-style replacement cover. It is not represented as an original equipment manufacturer cover or as a replacement for a specific OEM part number.

Safety & Important Information

  • Confirm the cover dimensions and your engine measurements before ordering.
  • Do not install or leave the cover on while the engine is running.
  • Make sure the cover and straps are secure before transport.
  • Do not use the cover if it is torn, excessively worn, or unable to stay securely fitted.
  • This is an aftermarket cover, not an OEM component.

About Sea Sierra

  • Marine-focused products — Practical replacement and maintenance products for boating applications.
  • Protective design — Products selected for everyday storage, transport, and marine-use needs.
  • Customer support — Contact support if you need help checking dimensions or product compatibility.

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