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Alternator Voltage Regulator Audi A3 A4 TT VW Golf IV Polo Passat Mercedes-Benz C-Class Vito Seat Ibiza Leon Bosch 2 Pin L-DFM 14.5V REG1071
Alternator Voltage Regulator Audi A3 A4 TT VW Golf IV Polo Passat Mercedes-Benz C-Class Vito Seat Ibiza Leon Bosch 2 Pin L-DFM 14.5V REG1071
Vehicle Compatibility
Alternator voltage regulator for Bosch alternators where the original regulator matches a 2 pin L-DFM or 2 pin L-FR connection with IDL-CPU plug type, uses an A-CIRCUIT control strategy, and is an IR/IF internal regulator internal fan design. The application list below is a practical guide for matching; final confirmation should be done by comparing the regulator plug style and alternator markings.
Listed Applications
- Audi: A2 1.4L; A3 1.6L; A3 1.8L Quattro; A3 1.8L T Quattro; A3 1.9L TDI Quattro; A3 and A4; S3 1.8L Quattro; TT 1.8L T Coupe Quattro; TT 1.8L T Roadster Quattro; TT 3.2L Coupe Quattro; TT 3.2L Roadster Quattro; TT Coupe 1.8L T Quattro; TT Roadster 1.8L T Quattro; Audi Various
- Mercedes-Benz: C180; C180 Kompressor; C200 Kompressor; C230 Kompressor; C240; C32 AMG; C320; CLK240; CLK320; CLK500; CLK55 AMG; ML320; SLK320; C200 Kompressor Sportcoupe; C200 Kompressor T-Modell; Vito 112 CDI
- Porsche: 911; Boxter; Carrera GT
- Seat: Ibiza 1.4L; Ibiza 1.6L; Ibiza 1.8L T Cupra R; Ibiza 2.0L; Leon 1.4L; Toledo 1.4L; Toledo 1.6L
- Volkswagen: Beetle 1.4L; Beetle 1.6L and Cabriolet; Beetle 1.8L; Beetle 1.9L TDI; Beetle 2.0L and Cabriolet; Bora 1.4L; Bora 1.6L; Bora 1.8L Turbo; Caddy 1.4L; California 2.4L Diesel; California 2.5L; California T4 2.5L TDI Syncro; California T5 1.9L TDI; Caravelle 2.0L; Caravelle 2.5L; Caravelle T4 2.5L TDI Syncro; Caravelle T5 1.9L TDI; CrossPolo 1.9L TDI; Golf 1.4L; Golf 1.6L 16V; Golf 1.8L GTI 20V Turbo; Golf 1.9L SDI TDI; Golf 2.0L; Golf 2.3L V5 VR5; Golf 2.8L V6; Golf IV 1.4L; Golf IV 1.6L Station Wagon Variant; Golf IV 1.8L T; Golf IV 1.9L SDI TDI TDI Station Wagon TDI Variant; Golf IV 2.0L 2.3L; Jetta 1.6L; Jetta IV 1.6L; Jetta IV 1.8L Turbo; Jetta IV 2.0L; LT28 2.5L SDI TDI; LT28 TD; LT35 2.5L TDI; LT35 TD; LT46 2.5L TDI; LT46 TD; Lupo 1.4L; Multivan 2.4L Diesel; Multivan T4 2.5L TDI Syncro; Multivan T5 1.9L TDI; New Beetle 1.8L T; New Beetle 2.0L Cabriolet; Passat 1.9L TDI; Polo 1.4L 16V TDI; Polo 1.6L Classic; Polo 1.8L GTI; Polo 1.9L TDI; Polo Classic 1.4L 1.6L; Polo Classic 1.9L SDI TDI; Polo Coupe 1.9L TDI; Polo Sedan 1.6L; Sharan 1.8L T; Sharan 1.9L TDI; Sharan 2.0L; Transporter 2.4L Diesel; Transporter 2.5L TDI; Transporter T4 2.5L TDI; Transporter T5 1.9L TDI
- Skoda: Skoda (applications using a matching Bosch 2 pin L-DFM or L-FR regulator)
- Iveco: Iveco (applications using a matching Bosch 2 pin L-DFM or L-FR regulator)
Specifications
- Reference: REG1071
- 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: 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
- Designed to stabilise charging output by regulating field current on compatible Bosch alternators
- 2 pin L-DFM or L-FR connection format to match the correct alternator regulator interface
- 14.5V charging specification for matching 12V electrical systems
- A-CIRCUIT control strategy and IR/IF internal regulator internal fan configuration for specified alternator designs
- Active lamp function and short circuit protection for supported charging circuits
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 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
- Match the regulator by manufacturer (Bosch), A-CIRCUIT type, and the 2 pin L-DFM or L-FR plug with IDL-CPU format
- Inspect brushes and slip rings while the alternator is open and replace worn components where 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
- If you are unsure about alternator repairs, have the regulator fitted and tested by a qualified auto electrician
$23.23
Alternator Voltage Regulator Audi A3 A4 TT VW Golf IV Polo Passat Mercedes-Benz C-Class Vito Seat Ibiza Leon Bosch 2 Pin L-DFM 14.5V REG1071—
$23.23
Description
Vehicle Compatibility
Alternator voltage regulator for Bosch alternators where the original regulator matches a 2 pin L-DFM or 2 pin L-FR connection with IDL-CPU plug type, uses an A-CIRCUIT control strategy, and is an IR/IF internal regulator internal fan design. The application list below is a practical guide for matching; final confirmation should be done by comparing the regulator plug style and alternator markings.
Listed Applications
- Audi: A2 1.4L; A3 1.6L; A3 1.8L Quattro; A3 1.8L T Quattro; A3 1.9L TDI Quattro; A3 and A4; S3 1.8L Quattro; TT 1.8L T Coupe Quattro; TT 1.8L T Roadster Quattro; TT 3.2L Coupe Quattro; TT 3.2L Roadster Quattro; TT Coupe 1.8L T Quattro; TT Roadster 1.8L T Quattro; Audi Various
- Mercedes-Benz: C180; C180 Kompressor; C200 Kompressor; C230 Kompressor; C240; C32 AMG; C320; CLK240; CLK320; CLK500; CLK55 AMG; ML320; SLK320; C200 Kompressor Sportcoupe; C200 Kompressor T-Modell; Vito 112 CDI
- Porsche: 911; Boxter; Carrera GT
- Seat: Ibiza 1.4L; Ibiza 1.6L; Ibiza 1.8L T Cupra R; Ibiza 2.0L; Leon 1.4L; Toledo 1.4L; Toledo 1.6L
- Volkswagen: Beetle 1.4L; Beetle 1.6L and Cabriolet; Beetle 1.8L; Beetle 1.9L TDI; Beetle 2.0L and Cabriolet; Bora 1.4L; Bora 1.6L; Bora 1.8L Turbo; Caddy 1.4L; California 2.4L Diesel; California 2.5L; California T4 2.5L TDI Syncro; California T5 1.9L TDI; Caravelle 2.0L; Caravelle 2.5L; Caravelle T4 2.5L TDI Syncro; Caravelle T5 1.9L TDI; CrossPolo 1.9L TDI; Golf 1.4L; Golf 1.6L 16V; Golf 1.8L GTI 20V Turbo; Golf 1.9L SDI TDI; Golf 2.0L; Golf 2.3L V5 VR5; Golf 2.8L V6; Golf IV 1.4L; Golf IV 1.6L Station Wagon Variant; Golf IV 1.8L T; Golf IV 1.9L SDI TDI TDI Station Wagon TDI Variant; Golf IV 2.0L 2.3L; Jetta 1.6L; Jetta IV 1.6L; Jetta IV 1.8L Turbo; Jetta IV 2.0L; LT28 2.5L SDI TDI; LT28 TD; LT35 2.5L TDI; LT35 TD; LT46 2.5L TDI; LT46 TD; Lupo 1.4L; Multivan 2.4L Diesel; Multivan T4 2.5L TDI Syncro; Multivan T5 1.9L TDI; New Beetle 1.8L T; New Beetle 2.0L Cabriolet; Passat 1.9L TDI; Polo 1.4L 16V TDI; Polo 1.6L Classic; Polo 1.8L GTI; Polo 1.9L TDI; Polo Classic 1.4L 1.6L; Polo Classic 1.9L SDI TDI; Polo Coupe 1.9L TDI; Polo Sedan 1.6L; Sharan 1.8L T; Sharan 1.9L TDI; Sharan 2.0L; Transporter 2.4L Diesel; Transporter 2.5L TDI; Transporter T4 2.5L TDI; Transporter T5 1.9L TDI
- Skoda: Skoda (applications using a matching Bosch 2 pin L-DFM or L-FR regulator)
- Iveco: Iveco (applications using a matching Bosch 2 pin L-DFM or L-FR regulator)
Specifications
- Reference: REG1071
- 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: 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
- Designed to stabilise charging output by regulating field current on compatible Bosch alternators
- 2 pin L-DFM or L-FR connection format to match the correct alternator regulator interface
- 14.5V charging specification for matching 12V electrical systems
- A-CIRCUIT control strategy and IR/IF internal regulator internal fan configuration for specified alternator designs
- Active lamp function and short circuit protection for supported charging circuits
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 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
- Match the regulator by manufacturer (Bosch), A-CIRCUIT type, and the 2 pin L-DFM or L-FR plug with IDL-CPU format
- Inspect brushes and slip rings while the alternator is open and replace worn components where 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
- If you are unsure about alternator repairs, have the regulator fitted and tested by a qualified auto electrician
