Alternator regulator for automobile

Spare: Alternator voltage regulator original

Information - Alternator regulator

Alternator relay: replacement and selection

When and why it is necessary to replace alternator voltage regulator

Manufacturers do not set terms of scheduled replacement for this component. A new element is needed in case of breakage or shorted contacts. And if the component is combined with alternator brushes, then it should be replaced at their wear-out.

Closure of contacts occurs mostly due to oxidation at moisture ingress, and open circuit can be caused by failures in the car electric system. First of all, wear-out of the alternator brushes is connected with their abrasion which leads to clogging of gaps between them with abrasive wear debris.

Defectiveness of the alternator voltage regulator can be indicated by the fact that the corresponding indicator lamp on the instrument panel doesn’t go on at ignition turning on. Also breakage is pointed out by the battery indicator, which doesn’t go on after engine start. A broken down part stops to adjust intensity of current coming from the alternator. Due to this, the battery can be charged insufficiently or excessively. Troubles with engine start quite often occur at insufficient charge. Sometimes it is impossible to start the car at all. Electrolyte boils out at excessive battery charge.

You can learn about this, noticing the white deposit on the battery and near it. If the voltage regulator combined with brushes is broken down, then, in most cases, there will be no electric power in the car.

In order to replace the alternator relay, you need to demount the alternator and, possibly, a few other parts complicating access to the unit. It is necessary to perform this job in accordance with the instruction noted in the car technical documentation.

How to select alternator relay

These parts can be combined with the alternator brushes or can be separate components. The most common regulators are of the first type, however, the components without brushes are notable for a longer operational lifetime.

In order to make the part serve faultlessly during a long time, purchase it from a proven manufacturer. For instance, high-quality alternator voltage regulators are presented in the assortment of HELLA, VEMO, BOSCH.

During component selection be guided by the brand, model, production year of your car. Also consider the type and power of the alternator, working voltage of the relay. Moreover, the components can differ by the fastening type.

Alternator regulator at low cost: Top Spares

Alternator Regulator (MOBILETRON, VR-B195M) -22%
Alternator Regulator | MOBILETRON VR-B195M Article №: VR-B195M
MOBILETRON Alternator Regulator VR-B195M
£ 6,49
£ 5,06
incl. 20% VAT, Shipping
Over 100 items in stock
  • Voltage [V] 12
  • Operating voltage [V] 14
  • Charging Voltage [V] 14,7
  • Condition  New
Details
Alternator Regulator Manual Transmission Bosch for vehicles with Tiptronic with freewheel belt pulley (BOSCH, F 00M 144 136) -22%
Alternator Regulator | BOSCH F 00M 144 136 Article №: F 00M 144 136
BOSCH Alternator Regulator F 00M 144 136
£ 32,99
£ 25,73
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Alternator Regulator (HITACHI, 130552) -22%
Alternator Regulator | HITACHI 130552 Article №: 130552
HITACHI Alternator Regulator 130552
£ 16,49
£ 12,86
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Over 100 items in stock
  • Manufacturer Restriction OE BOSCH
  • Voltage [V] 14,0
  • Electronic Regulator
  • Rated Voltage [V] 14
  • Condition  New
Details
Alternator Regulator (HELLA, 5DR 004 241-121) -22%
Alternator Regulator | HELLA 5DR 004 241-121 Article №: 5DR 004 241-121
HELLA Alternator Regulator 5DR 004 241-121
£ 16,49
£ 12,86
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Over 100 items in stock
  • Manufacturer Restriction Bosch
  • Rated Voltage [V] 12
  • Operating voltage [V] 14,1
  • Condition  New
Details
Alternator Regulator AEU Manual Transmission (AS-PL, ARE0008) -22%
Alternator Regulator | AS-PL ARE0008 Article №: ARE0008
AS-PL Alternator Regulator ARE0008
£ 16,99
£ 13,25
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Over 100 items in stock
  • Voltage [V] 12
  • Condition  New
Details
Alternator Regulator (VALEO, 599316) -22%
Alternator Regulator | VALEO 599316 Article №: 599316
VALEO Alternator Regulator 599316
£ 37,49
£ 29,24
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Over 100 items in stock
  • Weight [kg] 0,132
  • Condition  New
Details
Alternator Regulator (ERA, 216147) -22%
Alternator Regulator | ERA 216147 Article №: 216147
ERA Alternator Regulator 216147
£ 58,99
£ 46,01
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Over 100 items in stock
  • Voltage [V] 14,8
  • Condition  New
Details
Alternator Regulator (HITACHI, 130341) -22%
Alternator Regulator | HITACHI 130341 Article №: 130341
HITACHI Alternator Regulator 130341
£ 14,99
£ 11,69
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Over 100 items in stock
  • Manufacturer Restriction OE VALEO PARIS RHONE
  • Voltage [V] 14,0
  • Electronic Regulator
  • Rated Voltage [V] 14
  • Product line Hueco
  • Condition  New
Details
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