MERCURY 861122 Mpi Gm Engine Upper Top Cover 7.4

( Manufacturer Part Number: 861122 ), ( Part Type: Cover Engine ), ( Country/region Of Manufacture: United States )

Review MERCURY 861122mercruiser 7.4 Mpi Gm Engine Upper Top Cover fits MERCRUISER MARINE 454 1999

The Mercury 861122 Mercruiser 7.4 MPI 454 GM Marine Engine Upper Top Cover is an essential component for maintaining the optimal performance and longevity of your marine engine. Designed specifically for Mercury's 7.4 liter 454 GM Marine Engines, this upper top cover is engineered to provide superior sealing and protection against the harsh marine environment.

This upper top cover is manufactured using high-quality materials, including a durable cast aluminum housing and a rubber gasket that ensures a tight seal between the cover and the engine cylinder head. The cover features multiple cooling passages that allow for efficient heat dissipation, keeping the engine running cool and preventing overheating.

The Mercury 861122 Upper Top Cover also includes a breather system that helps to maintain proper crankcase ventilation and prevent harmful moisture buildup. This system includes a breather tube and a vent filter, which can be easily accessed for cleaning or replacement as needed.

Additionally, this upper top cover is designed with easy installation in mind. It comes with all necessary hardware, including 10 bolts and a gasket, making the replacement process quick and straightforward. The cover's sleek, streamlined design not only enhances the overall appearance of your marine engine but also reduces drag and improves fuel efficiency.

In summary, the Mercury 861122 Mercruiser 7.4 MPI 454 GM Marine Engine Upper Top Cover is a crucial investment for any boat owner seeking to ensure their engine runs smoothly and efficiently. Its durable construction, effective cooling system, and easy installation make it a top choice for marine engine maintenance and upkeep.

The Mercury 861122 Mercruiser 7.4 MPI 454 GM Marine Engine upper top cover is a crucial component for maintaining the performance and longevity of your marine engine. Here are some pros and cons that can help you make an informed decision about purchasing this part.

1. Enhanced Performance: A new upper top cover can help improve the overall performance of your engine. It seals the combustion chamber and ensures proper fuel mixture and air intake, which can lead to better fuel efficiency and more power.

2. Prevents Leaks: A worn-out or damaged upper top cover can cause oil leaks, leading to costly repairs and potential engine damage. By replacing the part, you can prevent these leaks and save yourself from unnecessary maintenance costs.

3. Improves Engine Appearance: A new upper top cover can give your engine a fresh, clean look, making it more visually appealing and enhancing the overall appearance of your boat.

1. Cost: Replacing an engine component like the upper top cover can be an expensive investment, especially if you're working on a tight budget.

2. Installation Complexity: Installing the upper top cover can be a complex process, especially if you're not experienced in marine engine repair. It may require specialized tools and a significant amount of time.

3. Availability: Finding the correct upper top cover for your specific engine model and year can be a challenge, as there are many different marine engine manufacturers and models.

The decision to buy a Mercury 861122 Mercruiser 7.4 MPI 454 GM Marine Engine upper top cover depends on your specific situation. If you're experiencing performance issues, oil leaks, or simply want to enhance the appearance of your engine, then replacing the upper top cover may be a worthwhile investment. However, if you're on a tight budget or not experienced in engine repair, the cost and complexity of the installation process may be a deterrent.

If you've weighed the pros and cons and have determined that replacing the upper top cover is the best course of action for your marine engine, then it's essential to ensure that you purchase the correct part from a reputable supplier. Double-check the part number and compatibility with your engine model and year before making the purchase, and consider working with a professional marine engine technician to ensure a proper installation.

Details:

What you see in the pictures is what get. Shelf 29-12-4-A. Part was removed from a 1999 7.4 MPI MerCruiser Marine engine. Mounting hardware is only included if it shown in the pictures.

Condition: Good used condition. I will do my best to resolve the issue. Look at pictures closely and ask any questions, I try to describe parts as best can. Thanks -Mike.

Please look at all pictures and read entire before buying.

part #: 861122 prices

• $131.34-$290.00

specifications otsterndriv:

• for models: Marine, 454, Mercruiser
• for makes: Mercury
• for years: 1999
• mpn: 861122
• part type: Cover Engine
• country/region of manufacture: United States

general otsterndriv:

• condition: Used
• Boat Parts > Sterndrive Motors Components > Other

returns otsterndriv:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

offer otsterndriv:

• quantity: 1
• options: Ship-to-home
• started: April 17, 2025
• availability: In Stock
• sold: 0

shipping otsterndriv:

• class: Standard, Expedited
• cost: $21.66
• service: FedEx Ground or FedEx Home Delivery, USPS Ground Advantage, USPS Priority Mail, FedEx 2Day
• type: Calculated
• carrier: FedEx, USPS
• transit: 4-7 Days

payments otsterndriv:

• other
• credit card: Mastercard
• wallet: Google-pay

seller otsterndriv:

• city: Huron, Ohio
• # reviews: 104155
• rating: 99.1%

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