Description
Vehicle Compatibility & OE Cross Reference
Alternator voltage regulator for Valeo alternators on multi-brand applications where the original regulator uses a LIN (COM) communication specification (LIN 1.3), runs on a B Circuit control strategy, and matches the same 1P COM / 1P LIN (Bolt) connection format. Use the vehicle list as a guide and confirm by alternator label, regulator connection and OE numbers.
Listed Applications
- Ford: B-Max; C-Max; C-Max II; Grand C-Max; EcoSport; Fiesta; Fiesta VI; Focus; Focus III; Galaxy; Kuga; Mondeo; Mondeo IV; S-Max; Tourneo; Transit
- Mazda: 2
- Mercedes-Benz: A-Class; B-Class; C-Class
- Smart: Forfour
- Volvo: C30; S40; S80; V50; V70; XC90
OE Numbers By Brand
- Ford: 8V21-10300BB; 9G9N-10300CA
- Mazda: Y406-18300
- Volvo: 31285808; 3600909
Specifications
- Reference: REG0099
- Part Type: Alternator Voltage Regulator
- Manufacturer: Valeo
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.0V (VS=14.0V)
- Charging Voltage: 14.3V
- Operating Voltage: 14V
- Voltage Range: From 10.7V To 16.0V
- Circuit: B Circuit
- Type: IR/IF (Internal Regulator / Internal Fan)
- Specification: LIN (COM) LIN 1.3
- Connector / Pins: 1P COM / 1P LIN (Bolt)
- OE Numbers: 8V21-10300BB; 9G9N-10300CA; Y406-18300; 31285808; 3600909
Features
- Designed for Valeo alternators using LIN (COM) communication control (LIN 1.3)
- B Circuit regulator logic with IR/IF internal regulator internal fan configuration for matching alternator designs
- Charging behaviour aligned to the listed specification, including 14.3V charging voltage and 10.7V to 16.0V operating range
- 1P COM and 1P LIN bolt connection format to match the correct regulator interface
- OE cross references provided to support accurate matching before fitment
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, regulator markings and clear 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 uses LIN (COM) control with the same 1P COM and 1P LIN bolt connection
- Cross check OE numbers and compare the plug layout to the original regulator before fitting
- Inspect brushes and slip rings while the alternator is open and replace worn components where required
- After installation, verify charging voltage under load to confirm stable regulation
- If you are unsure about alternator repairs, have the regulator fitted and tested by a qualified auto electrician