Description
Vehicle Compatibility
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 2 pin connector in the L-DFM or L-FR layout. Use the vehicle list as a guide, but confirm by alternator label and regulator plug style before ordering.
- Audi: A3 1.8T; A3 1.9 TDI Quattro; S3 1.8 Quattro; TT 1.8T Coupe Quattro; TT 1.8T Roadster Quattro; TT 3.2 Coupe Quattro; TT 3.2 Roadster Quattro; Audi Various
- Ford: Galaxy
- Seat / Skoda: Applications using a matching Bosch 2 pin L-DFM or L-FR regulator
- Volkswagen: Beetle 1.9 TDI; Bora; Golf 1.9 SDI TDI; Golf 2.3 V5 VR5; Golf 2.8 V6; Golf IV 1.6 Variant; Golf IV 1.8T; Golf IV 1.9 SDI TDI Variant; Golf IV 2.0 2.3; Polo 1.9 SDI TDI; Polo Classic 1.9 SDI TDI; Polo Coupe 1.9 TDI; Sharan 1.8T; Sharan 1.9 TDI; Sharan 2.8 4 Motion; Transporter T5 1.9 TDI; Transporter T5 3.2; California T5 1.9 TDI; California T5 3.2; Caravelle T5 1.9 TDI; Caravelle T5 3.2; Multivan T5 1.9 TDI; Multivan T5 3.2; CrossPolo 1.9 TDI; New Beetle 1.8T; New Beetle 2.0 Cabriolet
Specifications
- Reference: REG1104
- Catalogue Reference: REG1072
- Part Type: Alternator Voltage Regulator
- Manufacturer: Bosch
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.5V (VS=14.5V)
- Amps (Alternator Output Range Listed): 65A, 70A, 75A, 90A, 110A, 120A, 140A, 150A, 180A
- Circuit: A Circuit
- Type: IR/IF (Internal Regulator / Internal Fan)
- Connector / Pins: 2 Pin L-DFM / 2 Pin L-FR
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 specified regulator interface
- A Circuit control strategy and IR/IF internal regulator internal fan design for matching alternator layouts
- Useful for alternator overhaul work where the original regulator matches the same plug and control type
Why Order 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 Bosch manufacturer, A Circuit design, and the 2 pin L-DFM or L-FR plug layout
- 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).