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Alternator Voltage Regulator Audi A3 A4 A6 Volkswagen Golf Polo Passat Valeo 2 Pin L-DFM 14.7V REG0020
Alternator Voltage Regulator Audi A3 A4 A6 Volkswagen Golf Polo Passat Valeo 2 Pin L-DFM 14.7V REG0020
Vehicle Compatibility
Alternator voltage regulator for Valeo alternators where the original regulator matches a 2 pin L-DFM or 2 pin L-FR connection, IDL-CPU plug type, and B circuit control strategy with IR/IF internal regulator internal fan configuration. The vehicle list below is a guide. Final confirmation should be done by alternator brand, regulator plug style and OE cross reference.
- Brands listed: Alfa Romeo, Audi (A2, A3, A4, A6, A8, Allroad), BMW, Citroen, Fiat, Ford, Lancia, Mercedes-Benz, MINI, Opel, Peugeot, Seat (Ibiza, Leon), Skoda, Subaru, Suzuki, Volkswagen (Caddy, Fox, Golf, Passat, Polo, Tiguan), Volvo
OE Numbers By Brand
- Audi: 06B 903 803; 06B 903 803A; 06B 903 803B; 078 903 803C
Specifications
- Reference: REG0020
- Part Type: Alternator Voltage Regulator
- Alternator Brand: Valeo
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.7V (VS=14.7V)
- Charging Voltage: 14.7V
- Operating Voltage: 14V
- Type: IR/IF (Internal Regulator / Internal Fan)
- Circuit: B Circuit
- Connector / Pins: 2 Pin L-DFM / 2 Pin L-FR
- Plug Type: IDL-CPU
- Specification: 2.5 Sec. LRC
- Active Lamp: Yes
- Short Circuit Protection: Yes
Features
- Regulates alternator field current to stabilise charging output on compatible Valeo units
- 14.7V charging specification suited to matching 12V electrical systems
- 2 pin L-DFM or L-FR connector design with IDL-CPU plug type for correct alternator interface
- B circuit control strategy to match specified alternator operation
- Active lamp function and short circuit protection for supported applications
Why Buy From Us
- Local South African stock with nationwide courier delivery
- 12-month warranty subject to correct application and installation
- Fitment support using alternator labels, OE numbers and plug photos
- Trusted by workshops and DIY customers for reliable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Disconnect the battery before alternator removal or regulator replacement
- Confirm the alternator is Valeo and the regulator plug matches 2 pin L-DFM or 2 pin L-FR (IDL-CPU) with B circuit design
- Inspect brushes and slip rings while the alternator is open, replacing worn components as needed
- Ensure battery terminals and earth connections are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage at idle and under load and confirm warning lamp behaviour
- If you are unsure about alternator repairs, have the regulator fitted and tested by a qualified auto electrician
$10.15
Original: $33.84
-70%Alternator Voltage Regulator Audi A3 A4 A6 Volkswagen Golf Polo Passat Valeo 2 Pin L-DFM 14.7V REG0020—
$33.84
$10.15
Description
Vehicle Compatibility
Alternator voltage regulator for Valeo alternators where the original regulator matches a 2 pin L-DFM or 2 pin L-FR connection, IDL-CPU plug type, and B circuit control strategy with IR/IF internal regulator internal fan configuration. The vehicle list below is a guide. Final confirmation should be done by alternator brand, regulator plug style and OE cross reference.
- Brands listed: Alfa Romeo, Audi (A2, A3, A4, A6, A8, Allroad), BMW, Citroen, Fiat, Ford, Lancia, Mercedes-Benz, MINI, Opel, Peugeot, Seat (Ibiza, Leon), Skoda, Subaru, Suzuki, Volkswagen (Caddy, Fox, Golf, Passat, Polo, Tiguan), Volvo
OE Numbers By Brand
- Audi: 06B 903 803; 06B 903 803A; 06B 903 803B; 078 903 803C
Specifications
- Reference: REG0020
- Part Type: Alternator Voltage Regulator
- Alternator Brand: Valeo
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.7V (VS=14.7V)
- Charging Voltage: 14.7V
- Operating Voltage: 14V
- Type: IR/IF (Internal Regulator / Internal Fan)
- Circuit: B Circuit
- Connector / Pins: 2 Pin L-DFM / 2 Pin L-FR
- Plug Type: IDL-CPU
- Specification: 2.5 Sec. LRC
- Active Lamp: Yes
- Short Circuit Protection: Yes
Features
- Regulates alternator field current to stabilise charging output on compatible Valeo units
- 14.7V charging specification suited to matching 12V electrical systems
- 2 pin L-DFM or L-FR connector design with IDL-CPU plug type for correct alternator interface
- B circuit control strategy to match specified alternator operation
- Active lamp function and short circuit protection for supported applications
Why Buy From Us
- Local South African stock with nationwide courier delivery
- 12-month warranty subject to correct application and installation
- Fitment support using alternator labels, OE numbers and plug photos
- Trusted by workshops and DIY customers for reliable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Disconnect the battery before alternator removal or regulator replacement
- Confirm the alternator is Valeo and the regulator plug matches 2 pin L-DFM or 2 pin L-FR (IDL-CPU) with B circuit design
- Inspect brushes and slip rings while the alternator is open, replacing worn components as needed
- Ensure battery terminals and earth connections are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage at idle and under load and confirm warning lamp behaviour
- If you are unsure about alternator repairs, have the regulator fitted and tested by a qualified auto electrician
