YAMAHA 93306-20643-00 Koyo Bearing Nos

( Part Type: Bearing ), ( UPC: 933062064300 )

Review YAMAHA New Oem Koyo Bearing Nos

The **Yamaha 93306-20643-00 Koyo Bearing** is a precision-engineered, high-performance radial ball bearing designed to deliver exceptional durability, smooth operation, and reliability in demanding mechanical applications. Manufactured under Yamaha s stringent quality standards in collaboration with **Koyo Bearings**, a globally recognized leader in bearing technology, this component exemplifies a blend of Japanese engineering excellence and robust industrial-grade construction. The bearing features a **6200 series deep groove ball bearing configuration**, characterized by its robust inner and outer ring construction, optimized cage design, and high-quality chrome steel balls that ensure minimal friction and extended service life. Its **abec-5 precision rating** guarantees precise alignment and reduced vibration, making it ideal for use in high-speed machinery, automotive transmissions, industrial equipment, and power tools where consistent performance is critical. The bearing s **sealed design** provides effective protection against contaminants such as dust, moisture, and debris, enhancing its longevity in harsh operating environments. With a **bore diameter of 30mm (1.181 inches)** and an outer diameter of **62mm (2.441 inches)**, this bearing strikes a balance between compactness and load-bearing capacity, making it versatile for a wide range of applications, from motorcycle transmissions and ATV drivetrains to agricultural machinery and robotics. Engineered to withstand axial and radial loads with efficiency, the **Koyo bearing** incorporates a **steel cage** that ensures proper ball spacing, reducing wear and preventing premature failure. Yamaha s commitment to quality control ensures that each bearing undergoes rigorous testing for dimensional accuracy, load endurance, and operational stability, guaranteeing that it meets or exceeds industry standards. Whether integrated into a high-performance motorcycle, a precision industrial conveyor system, or a heavy-duty power tool, this bearing delivers the reliability and performance demanded by modern engineering applications. Its seamless compatibility with Yamaha s proprietary systems, along with its compatibility with aftermarket and OEM replacements, makes it a trusted choice for both original equipment manufacturers and maintenance professionals seeking long-term, high-performance solutions.

### **Pros and Cons of buying a Yamaha 93306-20643-00 (Koyo Bearing NOS)**

1. **High Quality and Durability** The Koyo bearing is a well-known brand in the automotive industry, known for its precision engineering and long-lasting performance. NOS (New Old Stock) bearings are often sourced from high-quality used parts that have been carefully inspected and refurbished, ensuring reliability.

2. **Compatibility with Yamaha Engines** This specific bearing (93306-20643-00) is designed for Yamaha engines, particularly those in outboard motors, ATVs, or other Yamaha-powered machinery. Using an OEM or high-quality aftermarket bearing reduces the risk of compatibility issues.

3. **Cost-Effective Alternative to New Parts** Compared to brand-new OEM bearings, NOS parts can be significantly cheaper while still maintaining high performance. This makes them a practical choice for budget-conscious buyers who still want reliable components.

4. **Minimal Wear and Tear** Since NOS bearings are pre-used but well-maintained, they have already undergone some break-in period, meaning they may perform better out of the box than brand-new bearings that still need to wear in.

5. **Easier Availability** In some cases, NOS parts may be easier to find than brand-new OEM parts, especially for older or discontinued models.

6. **Potential for Better Fit** Some mechanics and enthusiasts prefer NOS bearings because they may fit slightly better than new ones due to slight wear that allows for a more snug installation.

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1. **Variable Condition** Despite being NOS, the quality can vary depending on the source. Some bearings may have minor wear, contamination, or other issues that aren t immediately visible. Buyers should inspect them carefully or purchase from a reputable seller with a return policy.

2. **No Warranty or Guarantee** Unlike new OEM parts, NOS bearings often come without a warranty. If they fail prematurely, the buyer may be responsible for replacement costs.

3. **Potential for Contamination** Used bearings may have traces of old lubricant, dirt, or debris that could affect performance if not properly cleaned before installation. This requires extra maintenance effort.

4. **Limited Lifespan Compared to New Parts** While NOS bearings are durable, they may not last as long as brand-new OEM bearings, especially if they were previously exposed to harsh conditions.

5. **Trust in the Seller** Purchasing NOS parts from an untrusted source carries risks, such as receiving counterfeit or damaged parts. Buyers must verify the seller s reputation and return policies.

6. **Not Ideal for High-Stress Applications** If the bearing will be subjected to extreme loads or high-speed operation, a brand-new bearing may be a safer choice to prevent premature failure.

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The Yamaha 93306-20643-00 (Koyo NOS bearing) is a practical and cost-effective option for those who prioritize quality without the expense of brand-new parts. It offers the benefits of durability, compatibility, and often better availability, making it suitable for general use in Yamaha engines. However, buyers should be cautious about condition, warranty, and source reliability. If the application is critical or high-stress, a new OEM bearing may be the safer long-term investment.

- **Buy NOS if:** You are on a budget, the bearing is from a trusted seller, and you are willing to inspect it thoroughly before installation. It s a good choice for non-critical applications where reliability is still a priority.

- **Avoid NOS if:** You need a part for a high-performance or safety-critical application, or if you cannot verify the bearing s condition. In such cases, opt for a new OEM or high-quality aftermarket bearing with a warranty.

- **Best Practice:** Always clean the bearing thoroughly before installation, use proper lubrication, and follow manufacturer guidelines for maintenance. If possible, purchase from a seller with a return policy or warranty to mitigate risks.

Details:

Koyo Bearing is new and in excellent condition, not original packaging. Items are shipped using USPS, UPS, and FedEx. All parts are in stock and ready to ship.

If the original package is included it may show signs of wear. New OEM Yamaha 93306-20643-00 Koyo Bearing NOS.

part #: 933062064300 price

• $62.99

specifications bearingmotorcycleiz:

• for makes: Yamaha
• part type: Bearing
• upc: 933062064300

shipping bearingmotorcycleiz:

• class: Standard, Expedited, One-day
• type: Calculated
• cost: $0.00
• carrier: USPS, UPS
• transit: 5-11 Days
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air

payments bearingmotorcycleiz:

• credit card: Visa
• wallet: Paypal
• other

offer bearingmotorcycleiz:

• best offers: True
• sold: 0
• options: Ship-to-home
• started: February 27, 2026
• availability: In Stock
• quantity: 4

returns bearingmotorcycleiz:

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

seller bearingmotorcycleiz:

• # reviews: 128471
• city: Ashaway, Rhode Island
• rating: 99.9%

general bearingmotorcycleiz:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Bearings

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