HONDA 91025-HL4-003 Nos Bearing Ball 63/28

( Manufacturer Part Number: 91025-HL4-003 ), ( Part Type: Bearing )

Review HONDA Nos Oem Part Bearing Special Ball 63/28

The **Honda 91025-HL4-003 NOS (New Old Stock) Bearing Ball (63/28)** is a precision-engineered component designed for high-performance and reliability in Honda s internal combustion engines, particularly those featuring the HL4 series, such as the legendary Honda NSX (R35) and other high-end models requiring meticulous maintenance. This ball bearing, part of Honda s original equipment line, is crafted to exact specifications, ensuring seamless integration with the crankshaft and connecting rod assembly. The bearing ball itself is a critical component of the **big-end bearing assembly**, where it interfaces with the crankshaft journal to facilitate smooth, low-friction articulation during engine operation. Constructed from high-grade, heat-treated steel, this bearing ball is designed to withstand extreme loads, high rotational speeds, and the thermal stresses inherent in high-performance applications, making it an ideal choice for both restoration projects and performance upgrades. The **63/28** designation refers to its specific dimensions 63mm in outer diameter and 28mm in inner diameter tailored to fit the precise clearances and tolerances of Honda s HL4 engine architecture. Whether used in a fully restored NSX, a modified street machine, or a competition-grade engine, this NOS bearing ball guarantees the structural integrity and longevity of the crankshaft assembly, reducing the risk of premature wear or catastrophic failure. Its inclusion in a rebuild or maintenance procedure ensures that the engine operates with the same level of precision and durability for which Honda is renowned, making it a must-have component for enthusiasts seeking authenticity and performance.

### **Pros and Cons of buying a Honda 91025-HL4-003 (NOS Bearing, Ball 63/28)**

1. **New Old Stock (NOS) Quality** The bearing is described as NOS, meaning it is unused and likely in excellent condition, with no signs of wear or damage. This ensures reliability and longevity compared to used or refurbished parts.

2. **High-Quality Bearing** The **63/28** designation refers to a deep groove ball bearing with an inner diameter of 28mm and an outer diameter of 63mm, which is a standard size for many Honda applications (e.g., alternators, water pumps, or transmission components). A well-manufactured bearing of this type should provide smooth operation and durability.

3. **Compatibility with Honda Models** The part number **91025-HL4-003** is specific to Honda, suggesting it fits certain models (likely related to the **HL4** engine or transmission). If you confirm it matches your vehicle s application, you avoid the risk of purchasing a generic part that may not fit properly.

4. **Reduced Risk of Failure** Since the bearing is new, it eliminates concerns about premature wear, corrosion, or contamination that could occur with a used part. This is particularly important for critical components like alternators, water pumps, or transmission bearings.

5. **Potential Cost Savings** While the price may be higher than a generic bearing, it could be more cost-effective than buying a complete assembly (e.g., an alternator or water pump) if the bearing is the only failing part.

6. **Ease of Installation** If the bearing is properly sealed and pre-lubricated (common with NOS parts), installation may be simpler than with a dry or damaged bearing that requires additional grease or cleaning.

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1. **Potential for Counterfeit or Low-Quality NOS** The term "NOS" can sometimes be misused, and there is a risk of purchasing a **reconditioned, refurbished, or counterfeit** bearing labeled as new. Without verification from a trusted seller (e.g., a reputable auto parts dealer, Honda specialist, or eBay seller with strong feedback), you may end up with a substandard part.

2. **Price Concerns** NOS parts are often more expensive than OEM or aftermarket alternatives. If the bearing is not absolutely necessary (e.g., if the component it s in is near the end of its life), the cost may not justify the purchase.

3. **Limited Availability of Documentation** Some NOS sellers do not provide detailed documentation or installation guides. If you re unfamiliar with bearing replacement procedures, you may need to research or seek professional help, adding to the cost.

4. **Risk of Incorrect Part Number** Even if the part number matches, there is a chance it may not fit your exact application due to variations in mounting, shaft size, or housing dimensions. Always cross-reference with your vehicle s service manual or a parts diagram.

5. **Warranty Limitations** NOS parts typically come with limited or no warranty, especially if purchased from a third-party seller. If the bearing fails shortly after installation, you may be responsible for replacement costs.

6. **Potential for Overkill** If the bearing is part of a larger assembly (e.g., an alternator or water pump), replacing just the bearing may not be the most efficient solution. In some cases, it s cheaper to buy a new assembly rather than source individual components.

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The **Honda 91025-HL4-003 (NOS bearing, 63/28)** is a **high-quality, reliable option** if you need a replacement bearing for a critical component in your vehicle. Its NOS status suggests it is unused and should perform well, provided it is genuine. However, the **risk of counterfeit parts, compatibility issues, and higher cost** must be carefully considered before purchasing.

If you are confident in the seller s reputation and have verified the part s compatibility with your vehicle, this bearing is a **strong choice** for longevity and performance. If you are unsure about the part s authenticity or application, it may be worth exploring **OEM or aftermarket alternatives** that offer similar performance at a lower risk.

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1. **Verify the Seller s Credibility** Purchase from a **trusted Honda specialist, authorized dealer, or a well-reviewed online retailer** (e.g., RockAuto, Amazon, or a reputable eBay seller with positive feedback). Avoid sellers with no history or vague descriptions.

2. **Confirm Compatibility** Double-check that the bearing fits your specific application by consulting your **vehicle s service manual, a parts diagram, or a mechanic**. If possible, compare it with the original bearing removed from your vehicle.

3. **Consider Alternatives** If the bearing is part of a larger assembly (e.g., an alternator or water pump), weigh the cost of replacing just the bearing against purchasing a **new or remanufactured assembly**. In some cases, this may be more cost-effective.

4. **Inspect the Bearing Before Purchase** If possible, request **photos or a video** of the bearing to confirm it is clean, intact, and properly sealed. Look for signs of wear, corrosion, or damage.

5. **Proceed with Caution on Price** While NOS parts are premium, **compare prices across sellers** to ensure you re not overpaying. Significant price discrepancies may indicate a scam or counterfeit item.

6. **Install Properly** If you re not experienced with bearing replacement, **seek professional installation**, especially for critical components like transmission or engine bearings.

**Final Verdict:** If sourced correctly and applied properly, this bearing is a **solid investment** for reliability. However, proceed with due diligence to avoid potential pitfalls.

Details:

NOS Honda OEM Part # 91025-HL4-003 BEARING, SPECIAL BALL 63/28.

part #: 91025hl4003 prices

• $19.34-$20.95

specifications bearingmotorcycleiz:

• for makes: Honda
• mpn: 91025-hl4-003
• part type: Bearing

payments bearingmotorcycleiz:

• credit card: Visa
• other
• wallet: Apple-pay

general bearingmotorcycleiz:

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

returns bearingmotorcycleiz:

• policy: No Returns

seller bearingmotorcycleiz:

• city: Bellville, Ohio
• rating: 100.0%
• # reviews: 421

shipping bearingmotorcycleiz:

• cost: $0.00
• type: Calculated
• service: USPS Ground Advantage
• transit: 4-9 Days
• class: Standard
• carrier: USPS

offer bearingmotorcycleiz:

• options: Ship-to-home
• quantity: 1
• started: February 22, 2026
• sold: 0
• availability: In Stock

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