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  2. sku: 17646968218712731
  3. YAMAHA 46X-21170-00-00

YAMAHA 46X-21170-00-00 Battery Box Regulator

fits model: Fz600, Fz, 600. make: Yamaha. year: 1986.

46x-21170-00-00 Yamaha 1986 Fz600 Fz 600 Battery Box With Regulator

( Manufacturer Part Number: 46X-21170-00-00 ), ( Part Type: Battery Box Regulator )

Review YAMAHA Battery Box Regulator fits FZ600 FZ 600 1986

The **Yamaha 46X-21170-00-00 Battery Box Regulator** from the 1986 FZ600/FZ600R is a meticulously engineered component designed to ensure reliable electrical performance and longevity for this iconic sport-touring motorcycle. This high-quality, factory-original unit combines a robust **battery box** with an integrated **voltage regulator/rectifier**, forming a seamless system that regulates the charging voltage and protects the electrical components of the bike from voltage spikes or fluctuations. Crafted with Yamaha s signature precision, the battery box features a sturdy, corrosion-resistant construction, typically made from high-grade plastic reinforced with fiber for durability, ensuring it withstands the rigors of daily riding, varying weather conditions, and the mechanical stresses of the motorcycle s frame. The regulator itself is a critical component, responsible for converting the alternating current (AC) generated by the stator into stable direct current (DC) while maintaining an optimal charging voltage typically around 14.5 volts to keep the battery charged without overcharging. This prevents premature battery failure and ensures consistent electrical performance for lights, ignition, and other accessories. The compact yet functional design of the battery box allows for efficient heat dissipation, reducing the risk of overheating, while the secure mounting points ensure it remains firmly in place during aggressive riding maneuvers. Whether you're restoring a classic FZ600 to its former glory or maintaining an original bike, this regulator and battery box assembly is an essential part of the electrical system, guaranteeing smooth operation and reliability for years to come. Its compatibility with the 1986 model year makes it a sought-after replacement part for enthusiasts looking to preserve the authenticity and performance of their Yamaha.

The Yamaha 46X-21170-00-00 battery box regulator (commonly used on the 1986 FZ600/FZ600R) is a critical component for maintaining proper electrical function in your motorcycle. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Yamaha 46X-21170-00-00 Battery Box Regulator**

1. **Compatibility and Fit**

The regulator is specifically designed for the 1986 FZ600/FZ600R, ensuring a direct fit without modifications. This eliminates the need for adapters or custom wiring, reducing installation complexity.

2. **Reliability and Durability**

Yamaha components are generally built to last, especially for this era of motorcycle manufacturing. The regulator is designed to handle the electrical demands of the bike s systems, including lighting, ignition, and charging. If the original unit was failing due to age or wear, a new one will restore proper function.

3. **Prevents Electrical Issues**

A faulty regulator can lead to a variety of problems, such as:

- Inconsistent or no charging of the battery.

- Dim or flickering lights.

- Erratic ignition or starter motor performance.

- Overheating of the electrical system.

Replacing it proactively can prevent these issues and avoid more costly repairs down the line.

4. **Ease of Installation**

The regulator is a relatively straightforward component to replace. It typically requires disconnecting the battery, removing a few screws or clips, and connecting the new unit. Most riders with basic mechanical skills can handle the installation in under an hour.

5. **Cost-Effective**

Compared to the potential cost of repairing or replacing other electrical components (e.g., a dead battery, fried wiring, or a failing alternator), the regulator is a low-cost solution. Prices for a genuine or high-quality aftermarket unit are reasonable, often under $100.

6. **Availability of Genuine and Aftermarket Options**

You can find both OEM (original equipment manufacturer) Yamaha regulators and aftermarket alternatives. Aftermarket units from reputable brands (e.g., Speedhawk, K&N, or other motorcycle-specific suppliers) may offer comparable performance at a slightly lower cost.

7. **Maintains Resale Value**

If you plan to sell the bike later, having all critical components in good working order including the regulator can make the motorcycle more attractive to potential buyers. A fully functional electrical system is a common concern for buyers.

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### **Cons of buying a Yamaha 46X-21170-00-00 Battery Box Regulator**

1. **Age and Wear of Related Components**

If the regulator is failing, other parts of the electrical system (e.g., the battery, wiring harness, or alternator) may also be degraded. Replacing just the regulator without addressing these could lead to recurring issues. A thorough inspection of the entire system is recommended.

2. **Potential for Counterfeit or Low-Quality Units**

The aftermarket for vintage Yamaha parts can include counterfeit or poorly made replicas. These may not function correctly, could fail prematurely, or even damage other components. Buying from a trusted supplier (e.g., Yamaha dealerships, reputable online retailers, or specialized motorcycle part stores) is essential to avoid this risk.

3. **Wiring or Connector Issues**

Over time, the wiring harness or connectors around the regulator may become brittle, corroded, or damaged. If these are not addressed during installation, they could cause intermittent electrical problems. Inspecting and cleaning the connectors is part of the maintenance process.

4. **Limited Longevity Without Maintenance**

While the regulator itself may last for years, the overall electrical system requires periodic maintenance. This includes checking battery health, cleaning terminals, and ensuring proper grounding. Neglecting these steps can reduce the lifespan of the new regulator.

5. **Skill Level Required for Installation**

While the installation is not extremely difficult, it does require some familiarity with basic motorcycle electrical systems. Mistakes during installation such as incorrect wiring or improper grounding can lead to short circuits or other electrical failures. Riders unfamiliar with electrical work may need to consult a professional.

6. **Potential for Overcharging or Undercharging**

Some aftermarket regulators may not be calibrated precisely to the bike s specifications. This could result in the battery being overcharged (reducing its lifespan) or undercharged (leading to poor performance). Genuine Yamaha units are typically more reliable in this regard.

7. **Environmental Factors**

If the bike is ridden in harsh conditions (e.g., extreme heat, cold, or high humidity), the regulator may be more susceptible to failure over time. Ensuring the battery box is sealed and protected from moisture is important for longevity.

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### **Conclusion**

The Yamaha 46X-21170-00-00 battery box regulator is a practical and necessary component for restoring or maintaining the electrical health of your 1986 FZ600/FZ600R. Its primary advantage lies in its compatibility, reliability, and cost-effectiveness, making it a straightforward solution for common electrical issues. However, the decision to purchase it should be accompanied by a thorough inspection of the surrounding electrical system to avoid recurring problems.

The potential downsides such as the risk of counterfeit parts, wiring issues, or the need for additional maintenance can be mitigated by sourcing the part from a reputable supplier and performing a complete electrical checkup. For most riders, the benefits of replacing a failing regulator far outweigh the risks, especially if the issue is causing noticeable problems like poor charging or electrical failures.

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### **Recommendation**

1. **Source the Part Carefully**

Purchase the regulator from a trusted supplier, such as a Yamaha dealership, a well-reviewed online retailer specializing in motorcycle parts (e.g., RockAuto, Cycle World, or local motorcycle shops), or a reputable aftermarket brand with good feedback. Avoid extremely cheap units, as they may be counterfeit or low-quality.

2. **Inspect the Entire Electrical System**

Before or after replacing the regulator, inspect the following:

- Battery health (age, voltage, and physical condition).

- Wiring harness for signs of wear, corrosion, or damage.

- Connectors and terminals for cleanliness and proper fit.

- Alternator output (if possible) to ensure it is functioning correctly.

Addressing any issues in these areas will improve the longevity of the new regulator.

3. **Follow Installation Guidelines**

Refer to the bike s service manual or a detailed online guide for the correct installation process. Pay close attention to wiring polarity and grounding. If unsure, consult a professional mechanic to avoid electrical mistakes.

4. **Test the System After Installation**

After replacing the regulator, test the bike s electrical components (lights, ignition, charging) to ensure everything is working as expected. Monitor the battery s charge over the next few rides to confirm the regulator is functioning properly.

5. **Maintain the System Regularly**

Schedule periodic checks of the electrical system, including the regulator, battery, and wiring. Clean terminals, check for corrosion, and replace any worn components as needed. This proactive approach will help prevent future issues.

**Final Verdict:**

For the 1986 FZ600/FZ600R owner experiencing electrical problems or anticipating potential issues, replacing the battery box regulator with the Yamaha 46X-21170-00-00 (or a high-quality alternative) is a wise investment. It is a cost-effective solution that can restore reliability to the bike s electrical system and avoid more significant problems later. However, treat it as part of a broader maintenance plan to ensure the entire system remains in good working order.

Details:

1986 Yamaha FZ600 FZ 600 battery box with regulator. MAY ALSO FIT: 1988. We primarily use USPS and UPS as our shipping companies. MOTOR# 2AX-002400.

part #: 46x211700000 price

  • $26.05

specifications mocycfra:

  • for models: Fz600, Fz, 600
  • for makes: Yamaha
  • for years: 1986
  • mpn: 46x-21170-00-00
  • part type: Battery Box Regulator

seller mocycfra:

  • rating: 99.9%
  • city: Spokane, Washington
  • # reviews: 108420

shipping mocycfra:

  • service: USPS Ground Advantage
  • type: Fixed
  • transit: 4-7 Days
  • cost: $12.50
  • carrier: USPS
  • class: Standard

returns mocycfra:

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

offer mocycfra:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: April 11, 2026
  • availability: In Stock

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general mocycfra:

  • Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts
  • condition: Used
for models: fz600, fz, 600, for makes: yamaha, for years: 1986, part type: battery box regulator,
category: motorcycle parts > motorcycle scooter parts accessories > body frame > frames parts, sku: 17646968218712731,
Yamaha 46X-21170-00-00 Is Similar To:
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1 offer $26.05 USD
  • Used. Offer #1 priced at $26.05 + $12.50 shipping estimate = $38.55* total. MAY ALSO FIT.+$12.50 shipping

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