1. Boat Outboard Engines To Buy
  2. sku: 24304649044814861
  3. MERCURY MARINE 25-804304

MERCURY MARINE 25-804304 Quicksilver Outboard Grommet Pack

fits model: Mariner. make: Mercury.

25-804304 Mercury Marine Quicksilver Mariner Outboard Grommet Oem Pack Of 2 Each

( Brand: Mercury Marine ), ( Manufacturer Part Number: 25-804304 ), ( Country Of Origin: Japan )

Review MERCURY MARINE Quicksilver Outboard Grommet Oem Pack Of Each fits MARINER

The **Mercury Marine 25-804304 Quicksilver Mariner Outboard Grommet Pack** is a meticulously engineered replacement kit designed to restore optimal performance, reliability, and longevity to your Mercury Quicksilver Mariner outboard engine. This high-quality grommet pack is specifically tailored to address common wear and tear issues in critical sealing components, ensuring a tight, leak-free fit between the engine s internal and external systems. Crafted from durable, heat-resistant materials, these precision-molded grommets are engineered to withstand the demanding conditions of marine environments, including exposure to saltwater, UV radiation, and fluctuating temperatures. The pack includes a comprehensive selection of grommets for the intake and exhaust systems, fuel lines, and other vital connections, all of which play a crucial role in maintaining proper airflow, fuel delivery, and cooling efficiency. Whether you re preparing for a season of heavy use or addressing signs of aging seals such as leaks, reduced power, or unusual noises the Quicksilver Mariner Grommet Pack offers a straightforward, cost-effective solution to keep your outboard running at peak performance. Installation is simplified with clear compatibility markings and a straightforward replacement process, allowing even DIY enthusiasts to restore their engine s integrity with confidence. By investing in this genuine Mercury Marine part, you re not only preventing potential damage from fluid leaks or contamination but also extending the lifespan of your outboard, ensuring it remains a dependable power source for years of worry-free boating adventures.

The **Mercury Marine 25-804304 QuickSilver Mariner Outboard Grommet Pack** is a replacement kit designed to seal the lower unit of the QuickSilver Mariner outboard motor series. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **OEM Quality and Compatibility**

The grommet pack is manufactured by Mercury Marine, ensuring it meets the same high standards as original equipment. This reduces the risk of leaks or performance issues that could arise from aftermarket parts that may not fit perfectly.

2. **Prevents Water Ingress and Contamination**

The grommets seal critical areas in the lower unit, preventing water, debris, and contaminants from entering the gearcase and transmission. This helps maintain lubrication integrity and extends the life of internal components.

3. **Easy Installation**

Mercury Marine designs its replacement parts to be user-friendly. The grommet pack typically comes with clear instructions, and the parts are often designed for straightforward installation, even for DIYers with basic mechanical skills.

4. **Cost-Effective Maintenance**

Replacing worn grommets is a relatively inexpensive preventive measure compared to the potential cost of repairing or replacing a damaged lower unit, transmission, or stern drive components due to water intrusion.

5. **Improves Reliability**

By ensuring a proper seal, the grommet pack helps maintain consistent performance and reduces the likelihood of sudden failures, particularly in saltwater environments where corrosion is a major concern.

6. **Widely Available Support**

Mercury Marine offers extensive customer support, including service manuals, dealership assistance, and warranty coverage (if applicable). This makes troubleshooting or installation questions easier to address.

7. **Long-Term Savings**

Regular maintenance, such as replacing grommets, can prevent costly repairs down the line. For example, avoiding gearcase contamination can save hundreds or thousands of dollars in transmission or lower unit overhauls.

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### **Cons**

1. **Limited Lifespan**

Grommets are made of rubber or elastomeric materials that degrade over time due to exposure to UV rays, saltwater, heat, and mechanical stress. Even with proper installation, they will eventually wear out and require replacement, typically every 2 4 years depending on usage conditions.

2. **Potential for Improper Installation**

If not installed correctly, grommets can shift or fail to seal properly, leading to leaks. This risk is higher for inexperienced DIYers who may not follow the manufacturer s instructions precisely or use the correct tools (e.g., proper lubrication or alignment).

3. **Cost of Replacement**

While the grommet pack itself is relatively inexpensive (typically under $50), the cost of labor if you choose to have it installed by a professional can add up, especially if you need to remove and reinstall the lower unit or stern drive.

4. **Accessibility Challenges**

Some boat owners may find it difficult to access the lower unit grommets, particularly if the motor is mounted in a tight space or if the boat s design requires significant disassembly to reach the components. This can make installation more time-consuming.

5. **Environmental Factors**

In harsh conditions such as extreme saltwater exposure, frequent deep diving, or prolonged storage without flushing the grommets may degrade faster than expected. Regular inspection and maintenance are necessary to catch wear before it leads to leaks.

6. **Part Availability**

While Mercury Marine parts are widely available, there may be occasional delays in ordering, especially if you purchase directly from the manufacturer or a distributor. Local marine dealers might have stock, but availability can vary by region.

7. **Risk of Overlooking Other Maintenance**

Some boat owners may focus solely on replacing grommets and neglect other critical maintenance tasks, such as checking the propeller, flushing the engine, or inspecting the stern drive for wear. This can lead to broader issues if maintenance is not comprehensive.

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### **Conclusion**

The **Mercury Marine 25-804304 QuickSilver Mariner Outboard Grommet Pack** is a practical and necessary component for maintaining the health of your outboard motor s lower unit. Its primary advantage lies in its ability to prevent water and debris from damaging internal components, thereby extending the life of your engine and avoiding costly repairs. The ease of installation, OEM quality, and cost-effectiveness make it a sound investment for proactive boat owners.

However, the cons such as the limited lifespan of grommets, the potential for improper installation, and the need for regular inspection highlight the importance of treating this as part of a broader maintenance routine. The key to maximizing the benefits of this part is to replace it at the recommended intervals, ensure proper installation, and address any signs of wear or leaks promptly.

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### **Recommendation**

**Buy the Mercury Marine 25-804304 QuickSilver Mariner Outboard Grommet Pack** if:

- You are experiencing leaks or suspect grommet wear in your lower unit.

- You want to perform preventive maintenance to avoid more expensive repairs.

- You are comfortable with basic DIY maintenance or have access to a marine mechanic for installation.

- Your boat operates in saltwater or harsh conditions where grommets degrade faster.

**Consider alternatives or additional steps if:**

- You are unsure about your ability to install the grommets correctly; in this case, hire a professional to ensure a proper seal.

- You notice other signs of wear in your lower unit (e.g., unusual noises, vibration, or fluid leaks) that may require a more comprehensive inspection or repair.

- You are on a tight budget and can delay replacement until symptoms become unavoidable (though this is not recommended for long-term reliability).

**Final Verdict:**

For most boat owners, replacing the grommets as part of routine maintenance is a wise and cost-effective decision. It is a small but critical component that, when properly maintained, can save you significant trouble and expense in the future. Pair this replacement with regular flushing, lubrication checks, and inspections of other wear points to keep your outboard running smoothly.

Details:

Up for sale is a Mercury Marine / Quicksilver Mercuries Mariner grommet part number 25-804304. This is a new OEM part in the factory package.

part #: 25804304 price

  • $15.99

specifications ouboaen:

  • for models: Mariner
  • for makes: Mercury
  • brand: Mercury Marine
  • mpn: 25-804304
  • country of origin: Japan

general ouboaen:

  • Boat Parts > Outboard Engines Components > Other
  • condition: New

shipping ouboaen:

  • carrier: USPS
  • class: Standard
  • service: USPS Ground Advantage
  • transit: 4-8 Days
  • type: Fixed
  • cost: $0.00

seller ouboaen:

  • city: Mesa, Arizona
  • # reviews: 14011
  • rating: 100.0%

offer ouboaen:

  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • started: May 31, 2026
  • availability: In Stock

returns ouboaen:

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

payments ouboaen:

  • credit card: Discover
  • other
  • wallet: Google-pay
for models: mariner, for makes: mercury, country of origin: japan,
category: boat parts > outboard engines components, sku: 24304649044814861,
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1 offer $15.99 USD
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