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Alternator Voltage Regulator Opel Astra Corsa Meriva Zafira Fiat Palio Siena Strada Bosch 1 Pin L M5 Post 14.5V REG1073
Alternator Voltage Regulator Opel Astra Corsa Meriva Zafira Fiat Palio Siena Strada Bosch 1 Pin L M5 Post 14.5V REG1073
Vehicle Compatibility & OE Cross Reference
Alternator voltage regulator for Bosch alternators where the original regulator matches an A Circuit design with IR/IF internal regulator internal fan configuration and a 1 pin L connection using an M5 post plus M5 bolt (D+) output. Fitment must be confirmed by matching the regulator layout, terminals and dimensions listed below.
Listed Applications
- Fiat: Palio 1.4L; Palio 1.5L MPI 8V; Palio 1.6L MPI 8V or SPI 8V; Siena 1.4L 8V; Siena 1.6L MPI 8V or SPI 8V; Strada 1.6L MPI 8V
- Mercedes-Benz: Mercedes-Benz applications using a matching Bosch A Circuit 1 pin L M5 regulator
- New Holland: 4630; 5030; 5630; 6630; 7630; 7830; 8030
- Opel: Astra 1.4L; 1.6L; 1.8L; 2.0L; 2.0L Turbo; Combo; Corsa 1.4L; 1.6L; 1.7L CDTI or DTI; 1.8L; Corsa Utility; Meriva 1.6L 16V Twinport; Meriva 1.8L 16V; Tigra 1.8L Twin Top; Vectra; Zafira 1.8L
- Vauxhall: Vauxhall applications using a matching Bosch A Circuit 1 pin L M5 regulator
OE Numbers By Brand
- Fiat: 9949575
- Mercedes-Benz: 003-154-15-06
- Opel: 1204289; 9117942; 9201135; 93176380
- Bosch Reference: F00M144142
Specifications
- Reference: REG1073
- Part Type: Alternator Voltage Regulator
- Manufacturer: Bosch
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.5V (VS=14.5V)
- Charging Voltage: 14.5V
- Operating Voltage: 14V
- Circuit: A Circuit
- Type: IR/IF (Internal Regulator Internal Fan)
- Connector / Pins: 1 Pin L (M5 Post) plus M5 Bolt (D+)
- Plug Type: Not specified
- Specification: 8.5 Sec. LRC
- Active Lamp: Yes
- Mounting Points Diameter: 63.5mm
- Short Circuit Protection: Yes
- Cross Reference: Bosch F00M144142
Features
- Designed to stabilise charging output by regulating field current on compatible Bosch alternators
- 14.5V charging specification for matching 12V electrical systems
- 1 pin L connection with M5 post and M5 bolt D+ layout for the specified alternator configuration
- 63.5mm mounting points diameter to match the correct regulator footprint
- 8.5 sec LRC specification with active lamp function and short circuit protection
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 photos of terminals
- 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
- Match the regulator by Bosch manufacturer, A Circuit design, and the 1 pin L M5 post plus M5 bolt D+ layout
- Confirm the mounting footprint, including the 63.5mm mounting points diameter, matches the original regulator
- Inspect brushes, slip rings and rotor condition while the alternator is open and replace worn components as required
- 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
$27.33
Alternator Voltage Regulator Opel Astra Corsa Meriva Zafira Fiat Palio Siena Strada Bosch 1 Pin L M5 Post 14.5V REG1073—
$27.33
Description
Vehicle Compatibility & OE Cross Reference
Alternator voltage regulator for Bosch alternators where the original regulator matches an A Circuit design with IR/IF internal regulator internal fan configuration and a 1 pin L connection using an M5 post plus M5 bolt (D+) output. Fitment must be confirmed by matching the regulator layout, terminals and dimensions listed below.
Listed Applications
- Fiat: Palio 1.4L; Palio 1.5L MPI 8V; Palio 1.6L MPI 8V or SPI 8V; Siena 1.4L 8V; Siena 1.6L MPI 8V or SPI 8V; Strada 1.6L MPI 8V
- Mercedes-Benz: Mercedes-Benz applications using a matching Bosch A Circuit 1 pin L M5 regulator
- New Holland: 4630; 5030; 5630; 6630; 7630; 7830; 8030
- Opel: Astra 1.4L; 1.6L; 1.8L; 2.0L; 2.0L Turbo; Combo; Corsa 1.4L; 1.6L; 1.7L CDTI or DTI; 1.8L; Corsa Utility; Meriva 1.6L 16V Twinport; Meriva 1.8L 16V; Tigra 1.8L Twin Top; Vectra; Zafira 1.8L
- Vauxhall: Vauxhall applications using a matching Bosch A Circuit 1 pin L M5 regulator
OE Numbers By Brand
- Fiat: 9949575
- Mercedes-Benz: 003-154-15-06
- Opel: 1204289; 9117942; 9201135; 93176380
- Bosch Reference: F00M144142
Specifications
- Reference: REG1073
- Part Type: Alternator Voltage Regulator
- Manufacturer: Bosch
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.5V (VS=14.5V)
- Charging Voltage: 14.5V
- Operating Voltage: 14V
- Circuit: A Circuit
- Type: IR/IF (Internal Regulator Internal Fan)
- Connector / Pins: 1 Pin L (M5 Post) plus M5 Bolt (D+)
- Plug Type: Not specified
- Specification: 8.5 Sec. LRC
- Active Lamp: Yes
- Mounting Points Diameter: 63.5mm
- Short Circuit Protection: Yes
- Cross Reference: Bosch F00M144142
Features
- Designed to stabilise charging output by regulating field current on compatible Bosch alternators
- 14.5V charging specification for matching 12V electrical systems
- 1 pin L connection with M5 post and M5 bolt D+ layout for the specified alternator configuration
- 63.5mm mounting points diameter to match the correct regulator footprint
- 8.5 sec LRC specification with active lamp function and short circuit protection
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 photos of terminals
- 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
- Match the regulator by Bosch manufacturer, A Circuit design, and the 1 pin L M5 post plus M5 bolt D+ layout
- Confirm the mounting footprint, including the 63.5mm mounting points diameter, matches the original regulator
- Inspect brushes, slip rings and rotor condition while the alternator is open and replace worn components as required
- 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
