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  3. COMPU FIRE MN/AF39

COMPU-FIRE MN-AF39 Voltage Regulator Ms MN/AF39 38A

fits model: Fxrs. make: Harley, Davidson. year: 1984–1992.

Af39 Compu-fire Mn/af39 38a Voltage Regulator For 1984-1992 Harley Davidson Fxrs Low Ms

( Brand: Compu-fire ), ( Type: 38a Voltage Regulator ), ( Manufacturer Part Number: MN/AF39 ), ( Color: Black ), ( Compatible Year: 1992 1991 1990 1989 1988 1987 1986 1985 1984 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxrs Low Glide ), ( Bundle Description: 1 Pc Genuine Compu-fire 38a Voltage Regulator ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review COMPU FIRE Mn/af39 38a Voltage Regulator Harley Davidson Low Ms fits FXRS 1984–1992

Introducing the Compu-Fire MN/AF39 38A Voltage Regulator, specifically designed for Harley-Davidson FXRS MS motorcycles manufactured between 1984 and 1992. This voltage regulator is an essential component of your bike's electrical system, ensuring a stable and efficient power supply to the battery and other electrical components.

The Compu-Fire MN/AF39 38A Voltage Regulator is a high-performance replacement for the original equipment regulator. It features a robust design with a durable cast aluminum housing that can withstand the rigors of motorcycle use. This regulator is designed to deliver a consistent 14.4 volts to the battery, making it an excellent choice for riders who demand optimal performance from their bike's electrical system.

The regulator's internal components are precision-engineered to provide reliable and long-lasting operation. It includes a heavy-duty field coil, which provides excellent regulation and reduces heat buildup. The regulator also features a high-quality voltage sensing circuit that accurately regulates the voltage output, ensuring your battery stays charged and your electrical components function optimally.

Installation of the Compu-Fire MN/AF39 38A Voltage Regulator is straightforward and can be completed in a short amount of time. It is a direct replacement for the original equipment regulator, requiring no modifications to the wiring harness or other components. The regulator also comes with clear installation instructions and all necessary hardware for a hassle-free installation.

In summary, the Compu-Fire MN/AF39 38A Voltage Regulator is an excellent upgrade for Harley-Davidson FXRS MS motorcycles manufactured between 1984 and 1992. With its robust design, high-performance components, and straightforward installation, this regulator is a must-have for riders who demand the best from their bike's electrical system.

The Compu-Fire MN/AF39 38A Voltage Regulator is a popular aftermarket option for Harley-Davidson FXRS MS motorcycles manufactured between 1984 and 1992. This regulator is designed to provide a more stable and consistent voltage output to the electrical system. Here are some pros and cons of buying this regulator for your Harley-Davidson:

Pros:

1. Improved electrical system performance: The Compu-Fire MN/AF39 38A Voltage Regulator delivers a more consistent and stable voltage output to the electrical system, ensuring better performance from the lights, instruments, and other electrical components.

2. Enhanced reliability: This regulator is designed to be more robust and reliable than the stock regulator, reducing the likelihood of electrical issues and providing peace of mind.

3. Easy installation: The regulator is a direct replacement for the stock unit, making installation a straightforward process for most users.

4. Upgraded features: The Compu-Fire MN/AF39 38A Voltage Regulator includes features such as a built-in diode, which can help protect against battery drain and improve charging efficiency.

Cons:

1. Cost: The aftermarket regulator may cost more than the stock unit, which could be a deterrent for some riders.

2. Potential compatibility issues: Some users have reported compatibility issues with certain electrical systems or accessories, so it's essential to ensure that the regulator is compatible with your specific setup.

3. Adjustment requirements: While the regulator provides a more stable voltage output, some riders may prefer the ability to adjust the output voltage for specific applications.

Conclusion:

The Compu-Fire MN/AF39 38A Voltage Regulator is a high-quality aftermarket option for Harley-Davidson FXRS MS motorcycles manufactured between 1984 and 1992. It provides improved electrical system performance, enhanced reliability, and easy installation. However, it may come with a higher cost and potential compatibility issues. Ultimately, the decision to purchase this regulator depends on your specific needs and preferences.

Recommendation:

If you're looking for a reliable and high-performance voltage regulator for your Harley-Davidson FXRS MS, the Compu-Fire MN/AF39 38A Voltage Regulator is an excellent choice. It's important to ensure that it's compatible with your specific electrical system and to install it properly to ensure optimal performance. The investment in this regulator can help provide peace of mind and improve the overall riding experience.

Details:

Compu-Fire 38A voltage Regulator for 1984 - 1992 Harley Davidson FXRS Low ms: Status: In Stock.

part #: mnaf39 price

  • $293.37

specifications rightrectifier:

  • for models: Fxrs
  • for makes: Harley, Davidson
  • for years: 1984-1992
  • brand: Compu-fire
  • type: 38a Voltage Regulator
  • manufacturer part number: MN/AF39
  • color: Black
  • compatible year: 1992 1991 1990 1989 1988 1987 1986 1985 1984
  • compatible make: Harley Davidson
  • compatible model: Fxrs Low Glide
  • bundle description: 1 Pc Genuine Compu-fire 38a Voltage Regulator
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

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  • quantity: 1
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  • availability: In Stock
  • started: February 23, 2026

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  • Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Voltage Regulators Rectifiers
for models: fxrs, for makes: harley, davidson, for years: 1984-1992, type: 38a voltage regulator, compatible year: 1992 1991 1990 1989 1988 1987 1986 1985 1984, compatible make: harley davidson, compatible model: fxrs low glide, bundle description: 1 pc genuine compu-fire 38a voltage regulator, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > electrical ignition components > voltage regulators rectifiers, color: black, sku: 6445261430419713,

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