1. Boat Outboard Engines To Buy
  2. sku: 21813309277643752
  3. MERCURY 31-8M0103472

MERCURY 31-8M0103472 Quicksilver Bearing

fits make: Mercury.

31-8m0103472 Mercury Quicksilver Bearing Assembly New 8m0103472

( Manufacturer Part Number: 31-8M0103472 ), ( Part Type: Bearing ), ( Country Of Origin: United States )

Review MERCURY Quicksilver Bearing Assembly New 8m0103472

The **Mercury 31-8M0103472 Quicksilver Bearing** is a high-performance, precision-engineered bearing designed to deliver exceptional durability, smooth operation, and reliability in demanding marine and industrial applications. Part of Mercury s advanced line of outboard motor components, this **Quicksilver bearing** (catalog number 8M0103472) is specifically engineered to withstand the rigorous stresses of high-speed propulsion systems, ensuring optimal performance under heavy loads and continuous use. Constructed from high-grade, corrosion-resistant materials, this bearing features a robust **bronze or steel-backed design** with a **lead-free, self-lubricating lining**, which minimizes friction while maximizing load-bearing capacity. Its **precision-machined housing** and **tight tolerances** allow for seamless integration into Mercury s outboard motor assemblies, reducing wear on critical components such as the lower unit shaft and propeller assembly. Whether installed in recreational boats, fishing vessels, or commercial marine applications, this bearing is built to endure the harshest conditions from saltwater corrosion to thermal fluctuations while maintaining smooth, vibration-free operation. The **Quicksilver designation** signifies Mercury s commitment to innovation, ensuring that this bearing meets or exceeds industry standards for longevity and efficiency. Ideal for both original equipment and aftermarket upgrades, the **31-8M0103472** is a critical component for maintaining peak performance in Mercury s outboard motors, making it a must-have replacement for mechanics and boat owners seeking long-term reliability.

### **Pros and Cons of buying a Mercury 31 8M0103472 Quicksilver Bearing (8M0103472)**

#### **Pros:**

1. **Compatibility and Fit** This bearing is an OEM (Original Equipment Manufacturer) part designed specifically for the Mercury 31 Quicksilver outboard motor. It ensures a precise fit, reducing the risk of misalignment or performance issues that can arise with aftermarket or non-matching parts.

2. **Durability and Performance** Mercury Marine is known for producing high-quality marine components, and the Quicksilver series is particularly well-regarded for its reliability and efficiency. The 8M0103472 bearing is engineered to withstand the stresses of marine environments, including saltwater corrosion, vibration, and heavy loads, which can extend the lifespan of your motor.

3. **Warranty Coverage** Purchasing an OEM part often comes with warranty protection from Mercury Marine or an authorized dealer. This can provide peace of mind, especially if the bearing fails prematurely due to a defect. Aftermarket parts may not offer the same level of warranty support.

4. **Ease of Installation** Since this is a direct replacement part, installation should be straightforward if you have basic mechanical skills or if you take the motor to a professional. The bearing is designed to integrate seamlessly with the existing motor assembly, reducing the need for modifications.

5. **Reliability in Critical Applications** The bearing is part of the motor s drivetrain, which is crucial for smooth operation, fuel efficiency, and power transfer. A high-quality bearing like this can prevent costly failures, such as seized shafts or damaged gears, which could lead to expensive repairs or even motor replacement.

6. **Support for Resale Value** If you plan to sell the boat or motor in the future, having OEM parts installed can enhance its appeal to buyers who prioritize reliability and authenticity. Aftermarket parts may raise questions about the motor s condition or maintenance history.

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#### **Cons:**

1. **Higher Cost** OEM parts from Mercury Marine are typically more expensive than aftermarket alternatives. The 8M0103472 bearing may cost significantly more than a third-party bearing, which could be a financial consideration if you're on a tight budget.

2. **Limited Availability** Depending on your location, finding this specific part may require ordering from an authorized dealer, a marine parts distributor, or directly from Mercury Marine. Aftermarket parts are often more widely available through online retailers or local marine supply stores.

3. **Potential for Overkill** If your motor has been well-maintained and the bearing hasn t shown signs of wear, replacing it solely as a precautionary measure might be unnecessary. Over-replacing parts can lead to higher maintenance costs without immediate benefits.

4. **Installation Complexity** While the bearing itself is designed for easy installation, replacing it may require disassembling parts of the motor, which can be time-consuming and technically challenging for inexperienced DIYers. If you re not comfortable with motor disassembly, you may need to pay a mechanic for labor, adding to the cost.

5. **Risk of Counterfeit Parts** When purchasing OEM parts online, there is a risk of receiving counterfeit or low-quality replicas, especially from untrusted sellers. Always buy from authorized dealers or reputable suppliers to avoid this issue.

6. **Environmental and Ethical Concerns** Mercury Marine s manufacturing processes, like those of many automotive companies, have faced criticism for environmental impact and labor practices. If sustainability or ethical sourcing is a priority for you, this may be a minor drawback to consider.

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### **Conclusion:**

The Mercury 31 8M0103472 Quicksilver bearing is a high-quality, reliable part that offers significant advantages in terms of compatibility, durability, and warranty support. It is the best choice if you prioritize long-term performance, motor longevity, and the assurance of a part that meets the manufacturer s specifications. However, the higher cost and potential complexity of installation may make it less ideal for budget-conscious buyers or those who prefer simpler, more accessible solutions.

For most boat owners who value the reliability of their motor and are willing to invest in genuine parts, the 8M0103472 bearing is a strong recommendation. If you re experiencing specific issues (e.g., unusual noise, vibration, or leakage), replacing the bearing is likely a wise preventive measure. On the other hand, if the motor is in good condition and you re looking to save money, you might consider consulting a mechanic to assess whether the bearing is truly failing before committing to a replacement.

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### **Recommendation:** **Buy the Mercury 8M0103472 bearing if:**

- You are experiencing symptoms of bearing wear (e.g., grinding noises, difficulty steering, or reduced performance).

- You want to ensure the best possible fit and reliability for your motor.

- You have access to an authorized dealer or supplier and can verify the part s authenticity.

- You are willing to invest in a high-quality part to extend the lifespan of your motor.

**Consider alternatives if:**

- The motor is in excellent condition, and you re unsure whether the bearing needs replacement.

- You re on a tight budget and are willing to research high-quality aftermarket bearings (e.g., from brands like Torqeedo, Seafoam, or other reputable marine part manufacturers).

- You lack the mechanical skills or tools to install the bearing yourself and are concerned about labor costs.

**Final Advice:**

Before purchasing, inspect the motor for other potential issues (e.g., worn gears, damaged seals, or corrosion) that may require attention. If you re unsure, consult a marine mechanic to diagnose the problem and confirm whether the bearing is the root cause. Always source the part from a trusted dealer to avoid counterfeit items. For most owners, the 8M0103472 bearing is the safest and most reliable choice for maintaining their Mercury 31 Quicksilver motor.

Details:

Bearing Assembly 31-8M0103472, Please verify fitment by serial number before purchase. Quicksilver/ Mercury Marine Brand OEM part. Brand new in manufactures original box.

part #: 318m0103472 prices

  • $219.95-$239.33

specifications ouboaen:

  • for makes: Mercury
  • mpn: 31-8m0103472
  • part type: Bearing
  • country of origin: United States

payments ouboaen:

  • credit card: Discover
  • other
  • wallet: Paypal

returns ouboaen:

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

offer ouboaen:

  • availability: In Stock
  • sold: 0
  • started: February 5, 2026
  • quantity: 4
  • options: Ship-to-home
  • best offers: True

seller ouboaen:

  • city: Stillwater, Minnesota
  • rating: 100.0%
  • # reviews: 357

shipping ouboaen:

  • carrier: UPS
  • cost: $17.09
  • type: Calculated
  • service: UPS Ground
  • class: Standard
  • transit: 4-7 Days

general ouboaen:

  • condition: New
  • Boat Parts > Outboard Engines Components > Other
for makes: mercury, part type: bearing, country of origin: united states,
category: boat parts > outboard engines components, sku: 21813309277643752,
Mercury 31-8M0103472 Is Similar To:
ouboaen logo
2 offers $219.95–$239.33 USD
  • New. Offer #1 priced at $219.95 + $17.09 shipping estimate = $237.04* total. Bearing Assembly .+$17.09 shipping
  • New. Offer #2 priced at $239.33 + $9.54 shipping estimate = $248.87* total. 2 31 86763A2 01 SS BEARING ASSY. 1 31 8M0103472 00 ACT BEARING ASSY.+$9.54 shipping

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