Hella Alternator Voltage Regulator - 5DR 004 246-381-HE005

Hella alternator regulators meet the OE specification in terms of quality, service life and fittin...

Best current price£20.95from eBay

All Offers

10 offers from £20.95 - £36.86

View price history by clicking the chart icon.

eBayHella 5DR004246-381 Alternator Regulator Fits VW Golf Passat Polo Vento
Free delivery in 1–3 days
£20.95
Visit shop

Product Information

Full details

This Hella Alternator Voltage Regulator (5DR 004 246-381-HE005) is designed for automotive technicians and DIY enthusiasts seeking to ensure reliable electrical system performance. Its key benefit is maintaining optimum voltage control for consistent power delivery and extended component life, even under extreme conditions. A potential caveat is its specific compatibility with Valeo Motorola alternators, requiring careful verification before purchase.

All features

Model Part Number5DR 004 246-381-HE005
BrandHella

Extended Product Information

FAQs

What operating voltage does this regulator maintain?

This Hella voltage regulator is designed to maintain an operating voltage of approximately 14.5V.

Which alternator manufacturers is this regulator compatible with?

This specific model (5DR 004 246-381-HE005) is designed for alternators manufactured by Valeo Motorola.

Can I install this myself?

While possible for experienced DIYers, installation typically requires automotive expertise and specialized tools. It is recommended to have a qualified mechanic perform the installation to ensure proper function and avoid damage.

How do I know if my voltage regulator needs replacing?

Common signs include a battery warning light, dimming lights, electrical system issues, or a battery that frequently goes dead or appears overcharged.

What happens if I use a voltage regulator not designed for my alternator?

Using an incompatible regulator can lead to improper charging, damage to the alternator, the battery, and other sensitive electronic components in your vehicle.

Does this regulator come with a warranty?

Warranty information is typically provided by the retailer or seller. Please check the product listing or contact the seller for specific warranty details.

What is the difference between a voltage regulator and an alternator?

The alternator generates electrical power while the engine is running. The voltage regulator's job is to control the output voltage from the alternator, ensuring it stays within a safe range to charge the battery and power the vehicle's systems without damaging them.

Troubleshooting

Battery warning light stays on

Verify the voltage regulator is correctly installed and compatible with the alternator. Check alternator connections and test charging system voltage. May indicate a faulty alternator or regulator.

Headlights dimming or flickering

This can be a symptom of unstable voltage. Ensure the voltage regulator is functioning properly and the alternator is producing adequate current. Check battery terminals for corrosion.

Battery is overcharging (boiling electrolyte)

A faulty voltage regulator may be stuck in the 'on' position, leading to excessive voltage. Immediate replacement of the regulator is advised to prevent damage.

Battery is not charging sufficiently

Confirm the regulator is correctly seated and connected. Test the output voltage of the alternator. A low voltage reading may indicate a faulty regulator or alternator.

Pros and Cons

Pros

  • Meets original equipment specifications for guaranteed fit and function.
  • Ensures stable and optimal voltage output (14.5V).
  • Built for high reliability in extreme conditions.
  • Contributes to longer lifespan of electrical components.
  • Designed for specific, common alternator types (Valeo Motorola).

Cons

  • Specific compatibility may limit broader application.
  • Requires professional installation or advanced DIY knowledge.
  • Not a universal solution for all vehicle alternators.
  • Failure could lead to electrical system issues if not replaced promptly.

Setup, Compatibility & Care

Compatibility:

This voltage regulator is designed for use with Valeo Motorola alternators. It is crucial to verify that your vehicle's alternator is manufactured by Valeo Motorola and uses this specific regulator part number (5DR 004 246-381-HE005) before installation. Consult your vehicle's service manual or a qualified mechanic if unsure.

Setup (Installation):

Installation of an alternator voltage regulator is typically performed by a qualified automotive technician. The process generally involves:

  1. Disconnecting the vehicle's battery.
  2. Accessing and removing the alternator.
  3. Opening the alternator housing to access the regulator.
  4. Replacing the old regulator with the new Hella unit, ensuring proper connection.
  5. Reassembling the alternator and reinstalling it.
  6. Reconnecting the battery and testing the charging system voltage.

Care:

Once installed, the voltage regulator requires no specific user maintenance. Its performance is dependent on the overall health of the alternator and the vehicle's electrical system. Regular checks of the charging system voltage by a mechanic are recommended.

Price History

DatePrice
Visit shop