MERCURY 31-95227 Outboard Wrist Pin Bearing 2.2 3.5hp

( Manufacturer Part Number: 31-95227 ), ( Part Type: Bearing 5hp Pin )

Review MERCURY Outboard Wrist Pin Bearing 2.2 3.5hp New Free Shipping

The **Mercury 31-95227 Outboard Wrist Pin Bearing** is a precision-engineered component designed exclusively for Mercury marine outboard motors in the 2.2 to 3.5 horsepower range, ensuring optimal performance and longevity for small, high-reliability engines. This bearing plays a critical role in the crankshaft assembly, providing smooth, low-friction articulation between the wrist pin and connecting rod, which is essential for maintaining engine efficiency and reducing wear on critical internal components. Crafted from high-grade, heat-treated steel and reinforced with a durable, corrosion-resistant coating, this bearing is engineered to withstand the demanding conditions of marine environments, including exposure to saltwater, moisture, and temperature fluctuations. Its precise fit within the crankshaft housing helps minimize vibration and noise while supporting the engine s rotational forces, contributing to a quieter, more responsive operation. Whether used in recreational boats, fishing vessels, or utility craft, this bearing is a vital replacement part for maintaining the reliability and performance of Mercury s compact outboard motors, ensuring that the engine runs smoothly for years with proper maintenance. Its compatibility with the 2.2 to 3.5HP outboard series makes it an essential upgrade or replacement for mechanics and DIY enthusiasts seeking to restore or enhance the mechanical integrity of their engines.

### **Pros and Cons of buying a Mercury 31-95227 Outboard Wrist Pin Bearing (2.2 3.5 HP)**

1. **Direct Compatibility** This bearing is specifically designed for Mercury outboards in the 2.2 3.5 HP range, ensuring a proper fit without modification. It is a direct replacement for the original equipment manufacturer (OEM) part, reducing the risk of installation issues.

2. **Reliability and Durability** Mercury outboards are known for their quality, and their replacement parts are engineered to meet the same performance standards as the original components. A genuine wrist pin bearing should provide long-lasting wear resistance, especially if the engine is well-maintained.

3. **Ease of Installation** Since this is a standard replacement part, it should be straightforward to install, assuming the user has basic mechanical skills or access to a marine mechanic. The bearing is designed to fit seamlessly into the wrist pin assembly without requiring special tools beyond those typically found in a toolkit.

4. **Prevents Engine Damage** Wrist pin bearings act as a critical pivot point for the piston within the crankshaft assembly. A worn or failing bearing can lead to excessive friction, piston damage, or even catastrophic engine failure. Replacing it proactively can extend the life of the engine and avoid costly repairs.

5. **Warranty Coverage** If purchased from an authorized dealer or directly from Mercury, this part may come with a warranty, providing peace of mind against defects in materials or workmanship.

6. **Cost-Effective Solution** Replacing a single bearing is significantly cheaper than overhauling or replacing an entire engine. For small outboards like the 2.2 3.5 HP models, this part is relatively inexpensive compared to the alternative of repairing broader engine damage.

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1. **Limited Availability** Depending on the region, this specific part may not be readily available at all marine supply stores or online retailers. Some users may need to order it directly from Mercury or a specialty marine parts distributor, which could involve shipping delays.

2. **Skill Dependency** While the installation is straightforward, removing the old bearing may require disassembling parts of the engine, which can be tricky for inexperienced DIYers. Mistakes during disassembly or reassembly could lead to further damage or improper function.

3. **Potential Counterfeit Parts** Purchasing from unapproved sellers (e.g., third-party online marketplaces) risks receiving counterfeit or substandard parts. These may fail prematurely or not fit correctly, voiding any warranty and potentially causing more harm than good.

4. **Additional Wear Indicators** Simply replacing the wrist pin bearing may not address underlying issues such as oil contamination, improper lubrication, or excessive piston wear. If these problems persist, the new bearing may wear out quickly, necessitating further repairs.

5. **Time-Consuming Process** Removing and replacing the bearing requires removing the engine from the boat, disassembling the lower unit, and carefully inspecting other components. This can take several hours, especially for someone without prior experience.

6. **Cost of Tools** If the user lacks the necessary tools (e.g., torque wrench, piston ring compressor, or specialized outboard removal tools), they may need to invest in them, adding to the overall expense.

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The Mercury 31-95227 wrist pin bearing is a **highly recommended replacement part** for small Mercury outboards in the 2.2 3.5 HP range, provided it is purchased from an authorized source and installed correctly. The benefits of preventing engine damage, ensuring compatibility, and maintaining reliability far outweigh the minor drawbacks, particularly for those who prioritize long-term engine health.

However, the cons highlight the importance of **proper sourcing, careful installation, and addressing any underlying engine issues** before or during the replacement process. If the user lacks confidence in their mechanical skills, consulting a marine mechanic is advisable to avoid costly mistakes.

- **Purchase from an authorized dealer or Mercury s official website** to ensure authenticity and warranty coverage.

- **Follow the manufacturer s service manual** or consult a professional if unsure about the installation process.

- **Inspect other engine components** (e.g., piston, crankshaft, oil quality) during the repair to prevent future failures.

- **Consider professional help** if the user is unfamiliar with outboard engine disassembly or lacks the necessary tools.

For most owners of small Mercury outboards, replacing this bearing is a **wise preventive maintenance step** that can save significant time and money in the long run.

Details:

Condition is New. 2.2 -3.5HP NEW. Free Shipping. Mercury Outboard Wrist Pin Bearing NEW.

Shipped with USPS Ground Advantage.

part #: 3195227 prices

• $15.49-$29.99

specifications ouboaen:

• for makes: Mercury
• mpn: 31-95227
• part type: Bearing 5hp Pin

general ouboaen:

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

seller ouboaen:

• city: Stamford, Connecticut
• # reviews: 722
• rating: 100.0%

payments ouboaen:

• credit card: Diners-club
• wallet: Paypal
• other

shipping ouboaen:

• transit: 5-9 Days
• cost: $0.00
• class: Standard
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage

offer ouboaen:

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

returns ouboaen:

• policy: No Returns

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