Outboard Engine Cover – Fits Mercury, Yamaha, Honda 30-60 HP (Replaces 8M0221490)
Outboard Engine Cover – Fits Mercury, Yamaha, Honda 30-60 HP (Replaces 8M0221490) 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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Outboard Engine Cover – Fits Mercury, Yamaha, Honda 30-60 HP (Repla...
Outboard Engine Cover – Fits Mercury, Yamaha, Honda 30-60 HP (Replaces 8M0221490) is backordered and will ship as soon as it is back in stock.
Product Details
This is a protective Outboard Engine Cover – Fits Mercury, Yamaha, Honda 30-60 HP, designed to shield your engine from water, sun, and debris. It is engineered for a universal fit on most 30–60 HP outboard motors, including specific Mercury FourStroke models (serial numbers 1C043417 and up) and various models from Yamaha, Honda, and other major brands. Options for full coverage or vented use are available.
This aftermarket cover serves as a direct replacement for Mercury OEM part number 8M0221490 and aftermarket equivalents measuring 24.4"x14.17"x19.3".
- Installs easily with a simple slip-on design and secures with a drawstring closure.
- Constructed from waterproof, breathable, and UV-stable marine-grade polyester.
- The aftermarket model includes a convenient storage pouch.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury | 8M0221490 | OEM |
| SeaSierra | 24.4"x14.17"x19.3" | Aftermarket |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury owners, this cover is designed for 40-60 HP FourStroke outboards with serial numbers 1C043417 and higher.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | 40/50/60 HP | 40-60 | 4-Stroke | 8M0221490 | Serial number 1C043417 & up |
| Yamaha | Various | 30-60 | Aftermarket fit | ||
| Honda | Various | 30-60 | Aftermarket fit | ||
| Tohatsu | Various | 30-60 | Aftermarket fit | ||
| Suzuki | Various | 30-60 | Aftermarket fit |
Technical Specs
- Product Type
- Outboard Engine Cover
- Installation
- Slip-on with drawstring closure
- Housing Material
- Marine-grade polyester fabric with PVC coating (Mercury OEM: Polysoft II fabric)
- Housing Color
- Black (multiple colors may be available)
- Dimensions
- 24.4" × 14.17" × 19.3" (620 × 360 × 490 mm)
- Weight
- 6.7 oz (190 g) for aftermarket model
- Fitting Type
- Universal fit for specified HP range
- Other Technical Attributes
- Waterproof (95%), breathable (5%), UV-stable, 660lb breaking strength (OEM version)
What’s in the Box
- 1 x Outboard Engine Cover (8M0221490 or aftermarket equivalent)
- 1 x Storage pouch (aftermarket model)
Installation Notes
- Ensure the engine is off, cool to the touch, and tilted to a vertical position.
- Clean any dirt or debris from the engine cowling to prevent scratching.
- Unfold the cover and identify the front and rear.
- Carefully slip the cover over the engine cowling from top to bottom.
- Adjust the cover to ensure it is aligned and smooth, without bunching.
- Pull the drawstring closure at the bottom to secure the cover snugly around the engine.
- Tuck any excess drawstring length inside the cover to prevent it from catching.
Troubleshooting & FAQ
Will this cover fit my exact engine model?
This is a universal-fit cover for the 30-60 HP range. For Mercury, it's confirmed for 40-60 HP FourStroke models with serial numbers 1C043417 and up. For other brands like Yamaha and Honda, it fits most 30-60 HP outboards, but we recommend checking your engine's dimensions against the cover's size (24.4" × 14.17" × 19.3") to ensure a good fit.
Can I use this cover while my engine is running?
No. This is a storage cover and must be removed before starting the engine. Vented versions are available for specific models that allow for use while running, but this standard cover is for storage and protection only.
Is the material fully waterproof?
The marine-grade polyester fabric is rated 95% waterproof to repel rain, spray, and moisture. It is also 5% breathable, which helps prevent condensation and corrosion from forming underneath the cover during storage.
How should I clean the cover?
Clean with cool water and a soft brush. Avoid using harsh chemical cleaners or detergents, as they can damage the fabric and its protective PVC coating. Allow the cover to air dry completely before folding and storing it in the included pouch.
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.
Payment & Security
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