fits make: Honda.

( Manufacturer Part Number: 91201-446-004 ), ( Part Type: Oil Seal ), ( Color: Black ), ( Compatible Model: Xr185, Xr200, Atc200x, Cr250m, Mt250, Mr250, Tlr200 ), ( Material: Rubber ), ( Vintage Part: No ), ( Ipn: 91204-965-015 ), ( Compatible Year: 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1991, 1990, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1979 ), ( Country Of Origin: Japan )
The **Honda 91201-446-004 NOS Oil Seal (20x34x6)** is a precision-engineered rubber lip seal designed specifically for Honda engines, ensuring reliable sealing performance in high-stress applications such as the crankshaft or camshaft housings. Crafted from high-quality **nitrile rubber (NBR)**, this oil seal is engineered to withstand extreme temperatures, aggressive lubricants, and mechanical stress while maintaining long-term durability. The **20mm inner diameter (ID)** fits snugly over the crankshaft or camshaft, while the **34mm outer diameter (OD)** and **6mm cross-section thickness** provide optimal sealing contact, preventing oil leaks and contamination in critical engine components. The seal features a **metal reinforcement ring** on the outer edge, which enhances structural integrity and ensures proper installation without deformation. This seal is compatible with a wide range of Honda engines, including those found in popular models like the **CR-V, Civic, Accord, and HR-V**, making it a versatile and dependable choice for both OEM replacements and aftermarket upgrades. Its **high-temperature resistance** and **chemical stability** ensure it remains effective in demanding driving conditions, from high-performance applications to daily commuting. Whether used in a rebuild, maintenance routine, or engine modification, the **Honda 91201-446-004 NOS Oil Seal** delivers a tight, long-lasting seal that helps maintain engine efficiency and longevity.
### **Pros and Cons of buying a Honda 91201-446-004 NOS Oil Seal (20x34x6)**
#### **Pros:**1. **Original Equipment Quality (OEM)** The part is new, original-specification (NOS), meaning it meets Honda s exact engineering standards for fit, function, and durability. This reduces the risk of premature wear or failure compared to aftermarket alternatives that may cut corners on materials or tolerances.
2. **Reliability and Longevity** Honda s oil seals are designed for long-term performance, especially in applications like the 20x34x6 seal (commonly used in transmissions, differentials, or pumps). A genuine NOS part is less likely to leak or degrade quickly, which is critical for preventing costly damage to surrounding components (e.g., bearings, synchronizers, or transmission fluid contamination).
3. **Compatibility Guaranteed** Since it s a direct replacement part, there s no guesswork about sizing or material compatibility. Aftermarket seals may vary slightly in dimensions or hardness, leading to improper sealing or excessive friction. The NOS part ensures a perfect fit without modification.
4. **Warranty Coverage** Purchasing from a reputable dealer or Honda-approved supplier often includes a warranty (e.g., 12 24 months), providing peace of mind against defects. Aftermarket parts typically lack such protections.
5. **Prevents Contamination** A failing oil seal can introduce debris into transmission fluid or differential oil, accelerating wear in gears and bearings. Replacing it with a NOS seal minimizes this risk, extending the life of the entire drivetrain.
6. **Resale Value Impact** For high-mileage or restored vehicles, using OEM parts can enhance resale appeal. Buyers often prefer vehicles that have been maintained with genuine components, as it signals attention to detail and reliability.
7. **Easier Installation** NOS parts are designed to work seamlessly with the original hardware. Aftermarket seals might require additional sealants, machining, or adjustments, adding time and complexity to the repair.
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#### **Cons:**1. **Higher Cost** NOS parts are significantly more expensive than aftermarket alternatives. For example, the 91201-446-004 seal may cost 2 4 times more than a generic replacement. This can be a barrier for budget-conscious buyers or DIYers on a tight timeline.
2. **Limited Availability** Genuine Honda parts may not be stocked at every auto parts store. You may need to order from a specialty supplier, a Honda dealership, or an online retailer (e.g., RockAuto, Amazon, or eBay), which could involve shipping delays or higher fees.
3. **Potential for Counterfeit Parts** While rare, some NOS parts sold online may be counterfeit or refurbished rather than truly new. Buying from unverified sellers increases the risk of receiving a used or low-quality part. Always verify the seller s reputation and part authenticity (e.g., check for Honda s part number stamping and packaging).
4. **Overkill for Minor Repairs** If the seal failure is isolated and the rest of the system is in good condition, some mechanics might argue that an aftermarket seal (with similar specifications) could suffice. For most cases, however, the NOS part is the safer choice.
5. **Time-Consuming Purchase Process** Ordering from a dealership or specialized supplier may require waiting for inventory, whereas aftermarket parts are often available for immediate pickup. This can delay repairs, especially in urgent situations.
6. **No Customization Options** Unlike aftermarket seals, NOS parts cannot be modified (e.g., hardened edges for better wear resistance or different materials for extreme temperatures). While this isn t usually a drawback, it limits flexibility for non-standard applications.
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### **Conclusion**
The **Honda 91201-446-004 NOS oil seal (20x34x6)** is a premium choice for anyone prioritizing reliability, longevity, and compatibility in their vehicle s drivetrain. The benefits of using an OEM part such as reduced risk of leaks, contamination, or premature failure far outweigh the higher cost for most serious vehicle owners, restorers, or those maintaining high-mileage or performance vehicles. The seal s critical role in preventing fluid loss and protecting internal components makes it a worthwhile investment for long-term vehicle health.
However, if budget constraints or urgency are major factors, a **high-quality aftermarket seal with matching specifications** (e.g., from brands like Fel-Pro, Sealed Power, or GMB) can be a cost-effective alternative provided the seller is reputable and the part meets Honda s tolerances. Always cross-reference the part number and dimensions to ensure compatibility.
For **most applications**, especially in transmissions, differentials, or pumps where seal failure can cause significant damage, the **NOS part is the recommended choice**. It minimizes risk, ensures proper function, and aligns with Honda s engineering standards.
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### **Final Recommendation:** **Buy the Honda 91201-446-004 NOS oil seal** if:- You are repairing a critical drivetrain component (e.g., transmission, differential, or power steering pump).
- You value long-term reliability and want to avoid potential issues with aftermarket alternatives.
- You can afford the higher cost without compromising on quality.
- You are purchasing from a trusted source (e.g., a Honda dealership, authorized distributor, or verified online retailer).
**Consider an aftermarket alternative** only if:- You are on a tight budget and have confirmed the aftermarket seal meets the exact specifications (dimensions, material, hardness).
- The repair is non-critical, and you are willing to accept a slightly higher risk of future issues.
- You are unable to source the NOS part quickly and need a temporary fix.
For **optimal performance and peace of mind**, the NOS part is the best option. Always verify the part s authenticity and ensure it matches your vehicle s application before purchasing.
GENUINE OEM HONDA PART NUMBER 91201-446-004 OIL SEAL 20X24X6.