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  3. MERCURY QUICKSILVER 864459

MERCURY QUICKSILVER 864459 Engine Mounting Bracket

fits model: Marine. make: Mercury.

864459 Mercury Quicksilver Marine Engine Mounting Bracket Oem

( Brand: Mercury Quicksilver ), ( Manufacturer Part Number: 864459 ), ( Part Type: Bracket Engine Mounting )

Review MERCURY QUICKSILVER Engine Mounting Bracket Oem fits MARINE

The **Mercury Quicksilver 864459 Marine Engine Mounting Bracket** is a precision-engineered, high-performance accessory designed specifically for the reliable and efficient operation of Mercury s Quicksilver outboard motors, particularly those in the 150 to 250 horsepower range. Crafted from durable, corrosion-resistant materials, this mounting bracket is built to withstand the harshest marine environments, ensuring long-term durability and structural integrity even under the most demanding conditions. Engineered with meticulous attention to detail, the bracket features a robust, heavy-duty construction that minimizes vibration and noise while maintaining optimal alignment between the engine and the transom, thereby enhancing both performance and ride comfort. Its precise fitment is tailored to the unique mounting points of the Quicksilver series, providing a secure and stable foundation that reduces stress on critical engine components, ultimately extending the lifespan of your motor. Whether you re navigating rough waters, towing heavy loads, or simply cruising at high speeds, this bracket delivers uncompromising support, allowing your engine to operate at peak efficiency with minimal strain. Ideal for both new installations and retrofits, the Mercury Quicksilver 864459 Marine Engine Mounting Bracket is a must-have for boat owners seeking to maximize performance, reliability, and longevity from their Mercury outboard.

**Pros and Cons of buying a Mercury Quicksilver 864459 Marine Engine Mounting Bracket**

The Mercury Quicksilver 864459 engine mounting bracket is designed to secure outboard motors to transoms, ensuring stability, reducing vibration, and improving overall performance. Below is a detailed breakdown of its advantages and potential drawbacks.

### **Pros**

1. **Compatibility and Fit**

The 864459 bracket is specifically engineered for Mercury Quicksilver outboard motors, particularly models in the 150 250 horsepower range. It is designed to fit seamlessly with the transom clamp system, providing a secure and stable attachment. This reduces the risk of misalignment or improper installation, which can lead to engine damage or poor performance.

2. **Enhanced Stability and Vibration Reduction**

Marine engines generate significant vibration during operation, which can affect both the engine s lifespan and the comfort of passengers. This bracket is designed to minimize vibration by distributing the engine s weight evenly across the transom. This not only reduces fatigue on the engine mounts but also improves fuel efficiency and reduces wear on the transom itself.

3. **Durability and Material Quality**

Mercury marine products are known for using high-quality materials, including marine-grade steel or aluminum in many brackets. The 864459 bracket is likely constructed from robust materials resistant to corrosion, saltwater exposure, and mechanical stress. This ensures longevity, especially in harsh marine environments where saltwater and UV exposure can degrade cheaper components.

4. **Ease of Installation**

The bracket is designed with user-friendly features such as pre-drilled holes for bolts and clear alignment guides. This makes installation straightforward, even for those without extensive mechanical experience. Mercury often includes detailed instructions, and the bracket s design is optimized for quick and accurate mounting.

5. **Compatibility with Mercury Accessories**

Since this bracket is part of Mercury s ecosystem, it is likely designed to work seamlessly with other Mercury-branded components, such as transom clamps, vibration dampeners, or engine supports. This ensures a cohesive and optimized setup for your outboard motor.

6. **Warranty and Support**

Purchasing from an authorized Mercury dealer or the official website typically comes with a warranty, which may cover defects in materials or workmanship. Mercury s customer support is generally reliable, offering assistance if installation issues or defects arise.

7. **Improved Engine Performance**

A properly mounted engine runs more efficiently. The bracket helps maintain the correct angle and alignment, reducing strain on the engine s internal components. This can lead to better throttle response, smoother operation, and potentially longer engine life.

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### **Cons**

1. **Limited Compatibility**

While the 864459 bracket is designed for specific Mercury Quicksilver models, it may not fit other brands or even older or newer models within the same series. Before purchasing, verify compatibility with your exact engine model and transom size to avoid wasted money or installation problems.

2. **Potential for Overkill**

If your boat s transom is already well-supported by existing mounts or if your engine is relatively light, this bracket might offer more stability than necessary. In such cases, the added cost may not provide significant benefits, and a simpler or less expensive solution might suffice.

3. **Installation Complexity for DIYers**

Although the bracket is designed for ease of installation, some users may find it challenging to align perfectly, especially if they lack experience with marine engine mounts. Improper installation can lead to misalignment, increased vibration, or even damage to the transom or engine. Professional installation may be recommended for those unsure of their mechanical skills.

4. **Cost**

Mercury marine parts can be more expensive than generic or aftermarket alternatives. While the quality justifies the price for many users, budget-conscious buyers might explore third-party options that offer similar functionality at a lower cost. However, these alternatives may lack the same level of durability or warranty support.

5. **Weight Considerations**

The bracket adds to the overall weight of the engine setup. While this can improve stability, it may also require adjustments to the boat s balance, particularly in smaller vessels. Overloading the transom area could affect handling or require additional reinforcement.

6. **Maintenance Requirements**

Even with corrosion-resistant materials, marine brackets can accumulate salt, debris, or rust over time, especially in saltwater environments. Regular cleaning and inspection are necessary to prevent degradation, which could reduce the bracket s lifespan if neglected.

7. **Potential for Misalignment Over Time**

Despite its design, prolonged use, thermal expansion, or mechanical stress could cause the bracket to shift slightly. This may require periodic checks and adjustments to ensure the engine remains properly aligned, adding to long-term maintenance efforts.

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### **Conclusion**

The Mercury Quicksilver 864459 engine mounting bracket is a high-quality, reliable component designed to enhance the stability, performance, and longevity of compatible Mercury outboard motors. Its advantages in terms of compatibility, durability, vibration reduction, and ease of installation make it a strong choice for boat owners who prioritize performance and long-term reliability. However, its higher cost, limited compatibility, and potential overkill for simpler setups may deter some buyers.

For most users who own a Mercury Quicksilver outboard and seek a robust, factory-supported solution, this bracket is highly recommended. It is particularly valuable for those who spend significant time on the water, as the reduced vibration and improved alignment contribute to a smoother, more efficient ride and extend the engine s lifespan.

If budget is a concern or if you are unsure about compatibility, it may be worth consulting Mercury s official documentation or a marine professional to confirm the bracket s suitability for your specific setup. Alternatively, exploring aftermarket options could provide cost savings without sacrificing quality, though these should be thoroughly researched for durability and compatibility.

Details:

Mercury Quicksilver 864459, Marine Engine Mounting Bracket, OEM: Manufacturer. There are times when a display is used only to show the item being sold functional and working properly. The service is reliable, it just not as fast or traceable other more expensive methods. Read all thoroughly.

Whats Included: Mercury Quicksilver 864459, Marine Engine Mounting Bracket, OEM. Listed Item condition: New. These items are in manufacturers original packaging and may have minor cosmetic blemishes from storage. Packages may be scanned once in the USA and not again until they are delivered, or at all.

Shipping Info: Free shipping applies to items being delivered within the contiguous USA lower 48. In this case, these displays are not included. This is not included in shipping charges or the cost of item. Large items, such as open array radars and satellite TV equipment, may be too large to ship some domestic addresses outside the contiguous USA.

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part #: 864459 prices

  • $33.99-$37.99

specifications ouboaen:

  • for models: Marine
  • for makes: Mercury
  • brand: Mercury Quicksilver
  • mpn: 864459
  • part type: Bracket Engine Mounting

shipping ouboaen:

  • type: Fixed
  • class: Economy, Expedited, One-day
  • transit: 4-10 Days
  • cost: $0.00
  • service: Economy, Expedited, Overnight

general ouboaen:

  • condition: New
  • Boat Parts > Outboard Engines Components > Mounting Brackets

seller ouboaen:

  • city: Pompano Beach, Florida
  • rating: 100.0%
  • # reviews: 5655

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

offer ouboaen:

  • quantity: 1
  • sold: 0
  • started: March 6, 2026
  • options: Ship-to-home
  • availability: In Stock
for models: marine, for makes: mercury, part type: bracket engine mounting,
category: boat parts > outboard engines components > mounting brackets, sku: 22461548051807983,
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  • New. Offer #1 priced at $33.99 + $0.00 shipping estimate = $33.99* total. In this case, these displays are not included MPN : .FREE SHIPPING
  • New. Offer #2 priced at $37.99 + $0.00 shipping estimate = $37.99* total. FREE SHIPPING

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