Alternator Voltage Regulator 12V VW Audi 2 Pin LIN COM Dummy 07K903803 07K9030803 REG1202
Vehicle Compatibility
Alternator voltage regulator for select Volkswagen and Audi alternator applications where the charging system uses LIN (COM) control communication (LIN 1.3) and a matching 2 pin connector in the COM-Dummy layout (plug type IDCPU-D). Commonly identified by VAG alternator/regulator references 07K9030803 and 07K903803, and listed for alternator reference ALT1613A. Also cross-referenced to several Mercedes-Benz OE numbers where the regulator specification matches across applications. Confirm by alternator label, LIN requirement and plug style before ordering.
- Volkswagen: Applications matching VAG 07K9030803; 07K903803 (LIN COM 2 pin COM-Dummy)
- Audi: Applications matching VAG 07K9030803; 07K903803 (LIN COM 2 pin COM-Dummy)
- Mercedes-Benz (cross reference): A0031548406; A0031549306; A0031549706 / 0031548406; 0031549306; 0031549706
Specifications
- Reference: REG1202
- Part Type: Alternator Voltage Regulator
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.1V
- Specification: LIN (COM)
- Specification: LIN 1.3
- Voltage Range: 10.7V to 16.0V
- Connector / Pins: 2 Pin (COM-Dummy)
- Plug Type: IDCPU-D
- For Alternator Reference: ALT1613A
OE Numbers
- VAG: 07K9030803
- VAG: 07K903803
- Mercedes-Benz: A0031548406
- Mercedes-Benz: A0031549306
- Mercedes-Benz: A0031549706
- Mercedes-Benz: 0031548406
- Mercedes-Benz: 0031549306
- Mercedes-Benz: 0031549706
Features
- LIN (COM) / LIN 1.3 compatible regulator design for matched VW and Audi alternator control systems
- 2 pin COM-Dummy layout with IDCPU-D plug type for correct alternator harness matching
- 14.1V charging control with wide voltage operating range support (10.7V to 16.0V)
- Suitable replacement option where VAG 07K9030803 / 07K903803 or ALT1613A reference matches
- Best practice is to confirm LIN requirement and plug style to avoid incorrect fitment on similar-looking regulators
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 and clear photos of the existing plug and regulator
- Trusted by workshops and fleet operators for dependable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Disconnect the battery before alternator removal or voltage regulator replacement
- Confirm the alternator uses LIN (COM) / LIN 1.3 control and matches the 2 pin COM-Dummy (IDCPU-D) layout before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure all power and earth connections are clean and tight to prevent voltage drop and charging faults
- After installation, verify charging behaviour with a scan tool where applicable and confirm system voltage stability under load
- If you are unsure about alternator repairs on LIN-controlled systems, have the unit fitted and tested by a qualified auto electrician
Original: $48.59
-70%$48.59
$14.58
Description
Vehicle Compatibility
Alternator voltage regulator for select Volkswagen and Audi alternator applications where the charging system uses LIN (COM) control communication (LIN 1.3) and a matching 2 pin connector in the COM-Dummy layout (plug type IDCPU-D). Commonly identified by VAG alternator/regulator references 07K9030803 and 07K903803, and listed for alternator reference ALT1613A. Also cross-referenced to several Mercedes-Benz OE numbers where the regulator specification matches across applications. Confirm by alternator label, LIN requirement and plug style before ordering.
- Volkswagen: Applications matching VAG 07K9030803; 07K903803 (LIN COM 2 pin COM-Dummy)
- Audi: Applications matching VAG 07K9030803; 07K903803 (LIN COM 2 pin COM-Dummy)
- Mercedes-Benz (cross reference): A0031548406; A0031549306; A0031549706 / 0031548406; 0031549306; 0031549706
Specifications
- Reference: REG1202
- Part Type: Alternator Voltage Regulator
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.1V
- Specification: LIN (COM)
- Specification: LIN 1.3
- Voltage Range: 10.7V to 16.0V
- Connector / Pins: 2 Pin (COM-Dummy)
- Plug Type: IDCPU-D
- For Alternator Reference: ALT1613A
OE Numbers
- VAG: 07K9030803
- VAG: 07K903803
- Mercedes-Benz: A0031548406
- Mercedes-Benz: A0031549306
- Mercedes-Benz: A0031549706
- Mercedes-Benz: 0031548406
- Mercedes-Benz: 0031549306
- Mercedes-Benz: 0031549706
Features
- LIN (COM) / LIN 1.3 compatible regulator design for matched VW and Audi alternator control systems
- 2 pin COM-Dummy layout with IDCPU-D plug type for correct alternator harness matching
- 14.1V charging control with wide voltage operating range support (10.7V to 16.0V)
- Suitable replacement option where VAG 07K9030803 / 07K903803 or ALT1613A reference matches
- Best practice is to confirm LIN requirement and plug style to avoid incorrect fitment on similar-looking regulators
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 and clear photos of the existing plug and regulator
- Trusted by workshops and fleet operators for dependable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Disconnect the battery before alternator removal or voltage regulator replacement
- Confirm the alternator uses LIN (COM) / LIN 1.3 control and matches the 2 pin COM-Dummy (IDCPU-D) layout before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure all power and earth connections are clean and tight to prevent voltage drop and charging faults
- After installation, verify charging behaviour with a scan tool where applicable and confirm system voltage stability under load
- If you are unsure about alternator repairs on LIN-controlled systems, have the unit fitted and tested by a qualified auto electrician
