MERCURY Vented Outboard Engine Splash Cover 150hp - Durable Protection

In this review of the MERCURY vented outboard engine splash cover the bottom line is straightforward: this cover is for owners of 150hp FourStroke engines (serial number 1B905505 and higher) who want durable, breathable protection that can remain on while running. The reviewer found the material and fit to be the standout advantages, delivering reliable defense from UV, water spots and salt corrosion while matching the cowling appearance; however, installation can be awkward alone and takes patience.

Key Features

• Model fit: Specifically designed to fit 150hp FourStroke models with serial 1B905505 and higher, ensuring vents and contours align with the 150 cowling.
• Material durability: Made from marine-grade Polysoft II (P2), the cover resists UV degradation and stands up to regular exposure to sun and salt water.
• Protection: Shields the engine from water spots, salt corrosion and accidental knocks or scratches to preserve finish and components.
• Breathable and water-resistant: The fabric allows airflow to avoid trapping moisture while shedding surface water and light spray.
• Use while running: Designed to remain installed while the engine is operating, so protection is continuous during transit and idling.
• Includes one cover: The package contains a single black splash cover ready for immediate use.

Who It's For

The cover is best for boat owners who run a 150hp FourStroke with the required serial range and want a low-effort way to protect the cowling from sun, salt and scrapes. It suits people who value appearance as well as practical protection, since customers note the vents and fit match the 150 cowling nicely and the black cover looks clean on the motor.

It may be less ideal for a single person who expects quick one-handed installation; several users report the cover can be difficult to stretch over the engine alone. If you need a multi-size solution, or a different color beyond black or white, consider other cover options tailored to those needs.

Pros & Cons

Pros

• Durable marine-grade Polysoft II material resists UV and salt, extending the engine finish life.
• Breathable and water-resistant design protects against water spots while avoiding trapped moisture.
• Can remain fitted while the engine is running, providing continuous protection during use.
• Good cosmetic fit and appearance on 150hp cowling, with vents aligning correctly.

Cons

• Installation can be difficult for one person, making fitment a two-person job in some cases.

Specifications

Brand	MERCURY
Fits	150hp FourStroke models (serial 1B905505 and higher)
Material	Marine-grade Polysoft II (P2)
Color	Black (one cover included); white option available
Protection	UV, water spots, salt corrosion, knocks and scratches
Usage	Can be used while engine is running

Our Verdict

The MERCURY vented splash cover is a practical, well-made accessory for owners of qualifying 150hp FourStroke engines who want lasting protection and a good cosmetic fit. It represents solid value for preserving cowling finish and resisting sun and salt exposure, though buyers should plan for a two-person fitment if ease of installation is a priority.

Frequently Asked Questions

Will this cover fit my 150 FourStroke?
It fits 150hp FourStroke models with serial number 1B905505 and higher; check your engine serial before purchasing.

Can the cover be left on while running?
Yes, the design allows use while the engine is running, providing continuous protection.

Is the material weather resistant?
The Polysoft II material is UV-stabilized, breathable and water-resistant to protect against sun, water spots and salt corrosion.