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
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).