Alternator Voltage Regulator Mercedes-Benz A Class A140 A160 Land Rover Discovery Valeo 1 Pin L M5 Post 14.6V REG0021
Alternator Voltage Regulator Mercedes-Benz A Class A140 A160 Land Rover Discovery Valeo 1 Pin L M5 Post 14.6V REG0021
Vehicle Compatibility
Alternator voltage regulator for Valeo alternators used on select Mercedes-Benz and Land Rover applications where the original regulator matches a 1 pin L connection with an M5 post, B circuit control strategy, and IR/IF internal regulator internal fan configuration. Confirm by alternator brand and regulator connection style before ordering.
- Mercedes-Benz: A Class, A140, A160
- Land Rover: Discovery
Specifications
- Reference: REG0021
- Part Type: Alternator Voltage Regulator
- Alternator Brand: Valeo
- System Voltage: 12V
- Regulated Voltage Set Point: 14.6V (VS=14.6V)
- Charging Voltage: 14.6V
- Operating Voltage: 14V
- Type: IR/IF (Internal Regulator / Internal Fan)
- Circuit: B Circuit
- Connector / Pins: 1 Pin L (M5 Post)
- Specification: 2.5 Sec. LRC
- Active Lamp: Yes
- Short Circuit Protection: Yes
Features
- Regulates alternator field current to maintain stable charging output on compatible Valeo units
- 14.6V charging specification suited to matching 12V electrical systems
- 1 pin L M5 post connector format to match the correct regulator terminal style
- B circuit control strategy for correct alternator operation where specified
- 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, part 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 connection is 1 pin L with an M5 post and 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
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Vehicle Compatibility
Alternator voltage regulator for Valeo alternators used on select Mercedes-Benz and Land Rover applications where the original regulator matches a 1 pin L connection with an M5 post, B circuit control strategy, and IR/IF internal regulator internal fan configuration. Confirm by alternator brand and regulator connection style before ordering.
- Mercedes-Benz: A Class, A140, A160
- Land Rover: Discovery
Specifications
- Reference: REG0021
- Part Type: Alternator Voltage Regulator
- Alternator Brand: Valeo
- System Voltage: 12V
- Regulated Voltage Set Point: 14.6V (VS=14.6V)
- Charging Voltage: 14.6V
- Operating Voltage: 14V
- Type: IR/IF (Internal Regulator / Internal Fan)
- Circuit: B Circuit
- Connector / Pins: 1 Pin L (M5 Post)
- Specification: 2.5 Sec. LRC
- Active Lamp: Yes
- Short Circuit Protection: Yes
Features
- Regulates alternator field current to maintain stable charging output on compatible Valeo units
- 14.6V charging specification suited to matching 12V electrical systems
- 1 pin L M5 post connector format to match the correct regulator terminal style
- B circuit control strategy for correct alternator operation where specified
- 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, part 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 connection is 1 pin L with an M5 post and 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
