YAMAHA 93318-32003-00 Koyo Bearing Nos

( Part Type: Bearing ), ( UPC: 933183200300 )

Review YAMAHA New Oem Koyo Bearing Nos

The **Yamaha 93318-32003-00 Koyo Bearing** is a precision-engineered, high-performance radial ball bearing designed to deliver exceptional durability, smooth operation, and reliability in demanding mechanical applications. Part of Yamaha s extensive lineup of quality components, this bearing is meticulously crafted to meet stringent industry standards, ensuring optimal performance in both original equipment manufacturing (OEM) and aftermarket applications. Manufactured by **Koyo, a globally recognized leader in bearing technology**, this unit combines advanced materials and cutting-edge engineering to provide superior load-bearing capacity, reduced friction, and extended service life. The bearing features a robust **deep-groove ball design**, which allows for axial and radial load support, making it ideal for use in high-speed rotating systems such as automotive transmissions, industrial machinery, and power tools. Its **high-precision steel construction** ensures minimal play and vibration, contributing to quieter operation and enhanced efficiency. The bearing is sealed with a **lip-type seal** to protect internal components from contaminants like dust, debris, and moisture, thereby reducing wear and prolonging the lifespan of the assembly. Whether integrated into a motorcycle s transmission, a lawn equipment drive system, or a heavy-duty industrial conveyor, this bearing is engineered to withstand rigorous conditions while maintaining peak performance. Built to Yamaha s exacting specifications, the **93318-32003-00** is a dependable choice for professionals seeking a balance of strength, precision, and longevity in their mechanical applications.

### Pros and Cons of buying a Yamaha 93318-32003-00 (Koyo Bearing NOS)

1. **High Quality and Durability** Koyo is a well-known manufacturer of precision bearings, known for their reliability and longevity. NOS (New Old Stock) bearings are often sourced from high-quality, pre-owned inventory that has been stored properly, ensuring they meet original specifications without being brand new.

2. **Compatibility** This specific bearing (93318-32003-00) is designed for Yamaha engines, particularly those in motorcycles like the R1, R6, or other high-performance models. It is a direct replacement part, reducing the risk of fitment issues.

3. **Performance Benefits** High-quality bearings reduce friction, improve engine efficiency, and can enhance overall performance, especially in high-RPM applications where smooth operation is critical.

4. **Long-Term Cost Savings** While the upfront cost may be higher than aftermarket alternatives, a premium bearing like this can last significantly longer, reducing the need for frequent replacements and potential engine damage from bearing failure.

5. **Rarity and Collectibility** Since this is an NOS part, it may be harder to find in the future, making it a desirable option for enthusiasts who want authentic, original-spec components.

6. **Warranty and Support** Some NOS suppliers offer warranties or guarantees, providing peace of mind against defects. Yamaha or authorized dealers may also provide support for genuine parts.

7. **Aesthetic and Authenticity Appeal** For purists or restorers, using NOS parts ensures the original look and feel of the engine, which can be important for show cars or historical builds.

---

1. **Higher Cost** NOS bearings are typically more expensive than standard or aftermarket alternatives. The premium price reflects their quality, rarity, and the fact that they are often sourced from discontinued or hard-to-find inventory.

2. **Limited Availability** Since these parts are not mass-produced for new applications, they may be difficult to locate, especially if the supplier has a limited stock. Prices could also rise over time due to scarcity.

3. **Potential for Counterfeit Parts** The NOS market can be prone to counterfeit or mislabeled parts. Buyers must verify the authenticity of the bearing, including checking the manufacturer s markings, serial numbers, or purchasing from a reputable dealer.

4. **Installation Complexity** High-quality bearings often require precise installation techniques. Improper handling (e.g., not using proper tools, over-torquing, or contaminating the bearing) can void warranties or lead to premature failure.

5. **No Guarantee of Original Condition** While NOS implies the part is "new," it may have been used in a previous application. Even if it has been cleaned and inspected, there is no guarantee it hasn t been subjected to wear or damage in its past life.

6. **Lead Times** Due to limited stock, ordering NOS parts may result in longer wait times compared to buying standard or aftermarket replacements.

7. **Overkill for Some Applications** If the bearing is not the primary failure point in an engine, investing in a premium NOS part may not provide a significant advantage over a high-quality aftermarket alternative at a lower cost.

---

The Yamaha 93318-32003-00 (Koyo bearing NOS) is an excellent choice for enthusiasts, restorers, or high-performance riders who prioritize authenticity, durability, and long-term reliability. Its superior quality and compatibility make it ideal for projects where original-spec parts are critical. However, the higher cost, potential scarcity, and the need for careful installation must be weighed against the benefits.

For most casual riders or those on a budget, a high-quality aftermarket bearing may offer a cost-effective alternative without sacrificing performance. But for those who demand the best whether for racing, restoration, or maintaining peak engine health the investment in this NOS bearing is justified.

- You are restoring or maintaining a high-value Yamaha engine and want original-spec parts.

- You are building a performance engine where precision and longevity are critical.

- You are willing to pay a premium for authenticity and trust the bearing s quality.

- You have access to a reputable supplier who can verify the part s authenticity.

- You are on a tight budget and need a cost-effective solution.

- The bearing is not a critical failure point in your engine.

- You prefer mass-produced parts with warranties and easier availability.

Always verify the supplier s reputation, check for authenticity, and ensure proper installation to maximize the bearing s lifespan.

Details:

New OEM Yamaha 93318-32003-00 Koyo Bearing NOS. Koyo Bearing is new and in excellent condition, original packaging. All parts are in stock and ready to ship.

Items are shipped using USPS, UPS, and FedEx. If the original package is included it may show signs of wear.

part #: 933183200300 prices

• $16.95-$33.94

specifications bearingmotorcycleiz:

• for makes: Yamaha
• part type: Bearing
• upc: 933183200300

payments bearingmotorcycleiz:

• other
• credit card: Diners-club
• wallet: Google-pay

returns bearingmotorcycleiz:

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

offer bearingmotorcycleiz:

• options: Ship-to-home
• quantity: 1
• best offers: True
• sold: 0
• started: March 1, 2026
• availability: In Stock

shipping bearingmotorcycleiz:

• cost: $0.00
• class: Standard, Expedited, One-day
• transit: 4-8 Days
• carrier: USPS, UPS
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air

general bearingmotorcycleiz:

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

seller bearingmotorcycleiz:

• # reviews: 128602
• city: Ashaway, Rhode Island
• rating: 99.9%

Yamaha 93318-32003-00 Is Similar To:

• 010-295-10 Wsm Yamaha Main Bearing (37.5% similar) Upper main bearing 115 hp 1984 -UP 130 150 175 200 225 yamaha oe 940U3 93311940U300...(March 4th, 2017)
• 0924-0019 Moose Racing Yamaha Crank Shaft Bearing Kit (34.3% similar) ...(June 24th, 2018)
• 11h-17551-00-00 Yamaha Virago Middle Drive Bearing (33.3% similar) Shipping cost is only for the continental us. Pregnant antes DE compare. Eli Costco Del envoy es solo para Los 48 estates DE la union Americana. Up for sale is a bearing housing in good working condition. Shipping price covers the and cost of materials to ship item...(March 7th, 2017)
• Xs400 Xs Bearing Xs360 12r-11416-10-00 400 360 Crsf Plane Yamaha (23.6% similar) This is a yamaha plane bearing. It is obsolete...(December 21st, 2014)
• 12r-11416-20-00 Yamaha 78-82 Xs400 Nos (38.1% similar) Old part number 1L9 was replaced with 12R free shipping in the USA. New old stock yamaha crankshaft bearings for XS400...(December 22nd, 2017)
• 164-11561-00 Yamaha Nos Genuine Connecting (22.7% similar) See my other listings for more old bike parts. Unknown what model's it fits. New-old-stock genuine yamaha connecting rod has some surface oxidation spots but still good and usable...(October 2nd, 2017)
• 16g-15164-00-00 Yamaha Maxim Xj Engine Motor Housing Cover Bearing Cap (34.5% similar) There may be dirt, scratches, scuffs rust etc. Yamaha maxim XJ700 JX 700 engine motor housing cover bearing cap XJ650 XJ900 this part was removed from a motorcycle. Comes with everything pictured, consult dealer for other years and model's this may fit. Item is in used condition, as shown pictures, ...(July 19th, 2018)
• 183-11633-01 Yamaha Nos Oem Bearing (49.4% similar) ...(August 24th, 2018)
• 19-22005 Crankshaft Bearing Seal Kit For Yamaha (34.4% similar) The kits are assembled with all crankshaft bearing and oil seal where applicable. Electrical parts are not returnable. All the bearings and seals are made to exact oem specifications ensure maximum performance durability. CBS22005 for yamaha 2016 PROX crankshaft bearings and seals are manufactured ...(November 16th, 2018)
• 1j7-11416-00-00 Yamaha Nos Oem Crankshaft Bearing Xs Lm (45.5% similar) This is a new old stock oem crankshaft bearing. This comes come as pictured with some shelf wear and two pieces 1 whole unit...(February 28th, 2018)
• 1j7-11416-40-00 Yamaha Crankshaft Plane Bearing Xs Yellow Lm (35.8% similar) As shown in the pictures, it has some shelf wear. The corresponding color is yellow. The part number is 1J7 and has been discontinued. This is a new old stock oem crankshaft plane bearing set 2 pieces 1 whole unit...(March 2nd, 2018)