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
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).