YAMAHA 447-21629-01-00 Inner Rear Mud Guard Fender Seal

( Mounting Holes: Pre-drilled ), ( Machine Type: Street Motorcycle ), ( Color: Black ), ( Items Included: Seal ), ( Material: Plastic ), ( Vintage Part: Yes ), ( Placement On Vehicle: Rear ), ( Type: Inner Rear Fender ), ( Oe/oem Part Number: 447-21268-01-00 Seal ), ( Manufacturer Warranty: No Warranty ), ( Attachment Type: Bolt-on ), ( Finish: Clear Coat ), ( Country Of Origin: Japan ), ( UPC: 447216290100 )

Review YAMAHA Inner Rear Mud Guard Fender And Seal fits TWIN XS650 1975

The **Yamaha 447-21629-01-00 1975 XS650 Twin Inner Rear Mud Guard** is a meticulously crafted, period-correct replacement component designed to restore both the aesthetic and functional integrity of your classic Yamaha XS650 motorcycle from the mid-1970s. This inner rear mudguard, also known as the fender seal, is a precision-engineered part tailored to fit the iconic twin-cylinder engine s rear suspension area, ensuring a seamless integration with the frame and existing outer mudguard assembly. Crafted from durable, high-quality materials, this mudguard features a sturdy, slightly curved design that not only enhances the bike s vintage appeal but also effectively channels water and debris away from the drivetrain, reducing wear on the chain, sprocket, and rear wheel. The inner fender is engineered to accommodate the XS650 s distinctive rear suspension geometry, including the swingarm and shock absorber mounting points, allowing for a snug, interference-free fit. Whether you're restoring a showroom-worthy XS650 or maintaining a daily-ridden classic, this mudguard is an essential upgrade that bridges the gap between form and function, ensuring both protection and authenticity. Its clean, unobtrusive lines complement the bike s timeless styling while its robust construction guarantees long-term reliability, making it a must-have for any enthusiast seeking to preserve the legacy of Yamaha s legendary twin-cylinder powerhouse.

### **Pros and Cons of buying a Yamaha XS650 Inner Rear Mud Guard Fender Seal (Part #447-21629-01-00, 1975 Model)**

1. **Authentic Fitment** This part is designed specifically for the 1975 Yamaha XS650, ensuring a proper fit without modifications. Aftermarket or mismatched parts may not align correctly, leading to leaks or improper sealing.

2. **Reliable Sealing** The fender seal helps prevent water, dirt, and debris from entering the rear wheel area, reducing wear on the brake system and drivetrain. A well-sealed mudguard also improves visibility by keeping mud and grime off the wheel and tire.

3. **Durability** Yamaha parts are generally built to last, especially if the seal is made from high-quality rubber or synthetic materials. This reduces the risk of premature failure compared to cheaper aftermarket alternatives.

4. **Ease of Installation** Since it s an OEM (Original Equipment Manufacturer) part, it should fit seamlessly with the existing mounting points, requiring minimal adjustments. This makes it a straightforward DIY replacement for those comfortable with basic mechanical work.

5. **Compatibility with Other OEM Components** If you plan to restore or maintain your XS650 with genuine Yamaha parts, this seal integrates well with other factory components, ensuring consistency in performance and aesthetics.

6. **Prevents Rust and Corrosion** A properly sealed mudguard helps keep moisture out of critical areas, reducing the risk of rust forming on the rear axle, brake components, or suspension linkages.

7. **Aesthetic Consistency** For enthusiasts who value period-correct appearance, an OEM part maintains the bike s original look without the need for aftermarket modifications.

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1. **Cost** OEM Yamaha parts can be more expensive than aftermarket alternatives. While this part may not be extremely costly, the price could be a consideration if you re on a tight budget, especially if you need multiple seals or related components.

2. **Limited Availability** Finding a genuine Yamaha part for a 1975 model may require searching through specialty motorcycle dealers, online marketplaces, or used part lots. Some sellers may not stock this specific part, requiring extra effort to locate.

3. **Potential for Wear or Damage** If the seal is old or has been exposed to extreme conditions (e.g., high heat, chemicals, or sharp objects), it may already be degraded. Inspecting the part upon receipt is essential to ensure it s in usable condition.

4. **No Upgrades or Modern Improvements** Unlike some aftermarket parts, this is a direct replacement with no performance or durability enhancements. If you re looking for a more robust or weather-resistant seal, you may need to explore aftermarket options.

5. **Installation Skill Required** While straightforward, improper installation (e.g., over-tightening, misalignment) could damage the seal or surrounding components. Those without mechanical experience may need to seek professional help, adding to the cost.

6. **Potential for Counterfeit Parts** When purchasing online, there s a risk of receiving a counterfeit or low-quality replica, especially if buying from unverified sellers. Always verify the seller s reputation and part authenticity.

7. **Limited Longevity Compared to Aftermarket** Some aftermarket seals are designed with more durable materials (e.g., silicone or reinforced rubber), which may outlast the OEM part over time, depending on riding conditions.

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The **Yamaha XS650 inner rear mud guard fender seal (447-21629-01-00)** is a reliable and authentic choice for restoring or maintaining your 1975 model. Its primary advantages lie in its **proper fit, sealing effectiveness, and compatibility with OEM components**, making it ideal for those prioritizing authenticity and long-term functionality. However, the **higher cost, potential availability issues, and lack of modern upgrades** may deter budget-conscious buyers or those seeking performance enhancements.

If you value **original equipment quality, ease of installation, and a hassle-free fit**, this part is a solid investment. If you re open to **cost savings or enhanced durability**, exploring aftermarket alternatives (e.g., silicone seals or reinforced rubber options) could be worth considering though you d need to ensure they re compatible with your specific model.

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- You re restoring your XS650 to factory specifications.

- You want a guaranteed fit without modifications.

- You prioritize long-term reliability and sealing performance.

- You re comfortable installing it yourself or have access to a mechanic.

- You re on a tight budget and can find a high-quality aftermarket seal (e.g., from brands like **Sparky s, Rev It!, or Silicone Specialties**).

- You want a more durable or weather-resistant seal (e.g., silicone for extreme conditions).

- You re unable to locate the OEM part easily and are willing to verify the aftermarket option s compatibility.

**Final Tip:** Always inspect the seal upon arrival for cracks, dryness, or damage. If purchasing used, test its flexibility and elasticity to ensure it s in good condition. For the best results, pair this with a thorough cleaning of the fender mounting area before installation.

Details:

For sale is this used original inner rear fender or mud guard and seal from a 1975 Yamaha XS650 Twin. Cost will vary on location. There are no cracks or dents in the plastic fender. Buyer pays the cost of shipping.

The old rubber seal is intact and included. The bolt holes to mount are in good condition.

part #: 447216290100 prices

• $12.00-$20.00

specifications febocy:

• for models: Xs650, Twin
• for makes: Yamaha
• for years: 1975
• mounting holes: Pre-drilled
• machine type: Street Motorcycle
• color: Black
• items included: Seal
• material: Plastic
• vintage part: Yes
• placement on vehicle: Rear
• type: Inner Rear Fender
• oe/oem part number: 447-21268-01-00 Seal
• manufacturer warranty: No Warranty
• attachment type: Bolt-on
• finish: Clear Coat
• country of origin: Japan
• upc: 447216290100

offer febocy:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• quantity: 1
• started: May 5, 2026

general febocy:

• Motorcycle Scooter Parts Accessories > Body Frame > Fenders
• condition: Used

returns febocy:

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

payments febocy:

• credit card: Visa
• wallet: Paypal
• other

seller febocy:

• rating: 100.0%
• # reviews: 8709
• city: Atlantic, Iowa

shipping febocy:

• cost: $7.82
• class: Standard, Expedited
• type: Calculated
• carrier: UPS, USPS
• transit: 2-4 Days
• service: UPS Ground, USPS Ground Advantage, USPS Priority Mail

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