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
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).