OEM Alternator Voltage Regulator M542, aftermarket replacement, starter parts, alternator parts, automotive electrical
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OEM Valeo Voltage Regulator M542

Valeo
M542OEM
In stock
Voltage Regulator
$100.00

OEM Valeo Voltage Regulator M542

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Pre-orders ship out in the order received within 7–21 business days.

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Specifications

  • MFR:VALEO
  • FEATURE 1:100% New
  • FEATURE 2:Stator or Light Activated
  • FEATURE 3:With Soft Start
  • FEATURE 4:With LRC Function
  • FEATURE 5:With Under Voltage & Over Voltage Lamp
  • FEATURE 6:Active Lamp – With Output
  • NOTE 1:Terminal Identification: L-FR Terminals
  • SPECS FOR:Valeo IR/IF Alternators
  • SPECS:12 Volt, B-Circuit, VSet 14.5, High side drive regulator

USED ON

  • Chevrolet (2012-2015) ** Citroen - Europe (1996-2016) ** Citroen LCV - Europe (2002-2010) ** Fiat - Europe (2000-2016) ** Fiat LCV - Europe (2000-2012) ** Lancia - Europe (2002-2016) ** Mitsubishi - Europe (2007-2016) ** Peugeot - Europe (1998-2016) ** Peugeot LCV - Europe (2000-2014) ** Pontiac (2004-2005) ** Renault (2007-2009) ** Toyota - Europe (2005-2010)

Replaces

  • Fiat 595354, 77364873, Valeo 2542807, 2611164, 593857, 595354

LESTER NUMBERS

  • 20130, 20131, 23227, 23231, 23301, 23857, 23908, 24079, 24080

UNIT NUMBERS

  • Bosch 0986083890, 0986083890; Citroen 5702G8, 96 656177 80, 9665735680; Fiat 71748885, 9646065480, 9646066880, 9646321780, 9646388280, 9649611280, 9655733780, 9661544880; Peugeot 5705NF, 96 656177 80, 9665765680; PSA Peugeot Citroen 5702 C5, 5702 C5 (P), 5702 C6, 5702 C6 (C), 5702 E2, 5702 E3 (C), 5702 H0, 5702G9, 5705 AL, 5705 AL, 5705 AS, 5705 CS, 5705 CT, 5705 EW, 5705 EY, 5705 JF, 5705 JV, 5705CQ, 9655296080, 9655733780, 9662731680; Suzuki 31400-69K00; Toyota 27060-YV010, 27060-YV020; Valeo FG18S017, FG18S048, FGN18S017, FGN18S048, REMAN, TG10B013, TG10B024, TG15C020, TG15C022, TG15C023, TG15C028, TG15C053, TG15C054, TG15C060, TG15C112, TG15C118, TG15C119, TG15C127, TG15C134, TG15C154, TG15C156, TG9B026, TG9B028, TG9B044, TG9B045, TG9B067

Features & Benefits

  • Genuine OEM replacement part

  • Manufactured to original factory specifications

  • Regulates alternator output voltage

  • Helps maintain proper battery charging

  • Supports stable charging system performance

  • Original fit, function, and electrical characteristics

  • Ideal for alternator rebuilding and repair

  • Engineered for long-term reliability

 


 

What Does a Voltage Regulator Do?

The voltage regulator controls the alternator's output by regulating current supplied to the rotor field winding. As electrical demand changes, the regulator continuously adjusts field current to maintain the proper charging voltage for the battery and the vehicle's electrical system.

A properly functioning voltage regulator helps prevent battery overcharging and undercharging while protecting sensitive electrical components from excessive voltage. Because charging system performance depends on the interaction between the regulator, rotor, stator, rectifier, and battery, replacing a faulty regulator is an important step in restoring alternator performance.

 


 

Common Signs Replacement Is Needed

Replace the voltage regulator if you notice:

  • Battery overcharging

  • Battery not charging

  • Low charging voltage

  • High charging voltage

  • Battery warning light illuminated

  • Intermittent charging problems

  • Headlights that brighten or dim with engine speed

  • Charging system failure during testing

  • Voltage regulator failure discovered during alternator rebuilding

 


 

Installation Recommendations

Installation should be performed by a qualified technician or experienced alternator rebuilder. Before installing the new regulator, inspect the brushes, brush holder, slip rings, rotor, stator, rectifier, wiring, and electrical connections for signs of wear or damage.

Always verify connector configuration and mounting style before installation. After assembly, bench-test the alternator to confirm proper charging voltage and overall charging system performance.

 


 

While You're Rebuilding

Inspect other common wear components to help maximize charging system reliability:

 


 

Why Buy From RC Auto Electric?

RC Auto Electric specializes in genuine OEM and premium aftermarket alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.

 


 

Disclaimer

Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original OEM part number, connector configuration, mounting style, voltage specifications, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.

Features & Benefits
  • Genuine OEM replacement part
  • Manufactured to original factory specifications
  • Regulates alternator output voltage
  • Helps maintain proper battery charging
  • Supports stable charging system performance
  • Original fit, function, and electrical characteristics
  • Ideal for alternator rebuilding and repair
  • Engineered for long-term reliability
What Does a Voltage Regulator Do?

The voltage regulator controls the alternator's output by regulating current supplied to the rotor field winding. As electrical demand changes, the regulator continuously adjusts field current to maintain the proper charging voltage for the battery and the vehicle's electrical system.

A properly functioning voltage regulator helps prevent battery overcharging and undercharging while protecting sensitive electrical components from excessive voltage. Because charging system performance depends on the interaction between the regulator, rotor, stator, rectifier, and battery, replacing a faulty regulator is an important step in restoring alternator performance.

Common Signs Replacement Is Needed

Replace the voltage regulator if you notice:

  • Battery overcharging
  • Battery not charging
  • Low charging voltage
  • High charging voltage
  • Battery warning light illuminated
  • Intermittent charging problems
  • Headlights that brighten or dim with engine speed
  • Charging system failure during testing
  • Voltage regulator failure discovered during alternator rebuilding
Installation Recommendations

Installation should be performed by a qualified technician or experienced alternator rebuilder. Before installing the new regulator, inspect the brushes, brush holder, slip rings, rotor, stator, rectifier, wiring, and electrical connections for signs of wear or damage.

Always verify connector configuration and mounting style before installation. After assembly, bench-test the alternator to confirm proper charging voltage and overall charging system performance.

While You're Rebuilding

Inspect other common wear components to help maximize charging system reliability:

  • Bearings
  • Brushes
  • Brush Holder
  • Slip Rings
  • Rectifier
  • Diodes
  • Rotor
  • Clutch Pulley
  • Insulators
Why Buy From RC Auto Electric?

RC Auto Electric specializes in genuine OEM and premium aftermarket alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.

Disclaimer

Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original OEM part number, connector configuration, mounting style, voltage specifications, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.

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Frequently Asked Questions

How do I confirm compatibility? +
Compare part numbers, dimensions and photos with the original component.
Is this OEM or aftermarket? +
This listing is for an aftermarket replacement part.
What should I verify before ordering? +
Check all fitment and application details before purchase.
Is professional installation recommended? +
Professional installation is recommended.
Where can I find related parts? +
Browse related starter and alternator categories on RCAutoElectric.

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