Alternator Voltage Regulator 12V Bosch BMW 320i 325Ci 325i Touring 325Ti 330Ci 330i 525i Touring 530i X5 Z3 2 Pin IG L REG1108
Alternator Voltage Regulator 12V Bosch BMW 320i 325Ci 325i Touring 325Ti 330Ci 330i 525i Touring 530i X5 Z3 2 Pin IG L REG1108
Vehicle Compatibility
Alternator voltage regulator for select Bosch alternator applications on BMW vehicles where the alternator uses a matching NCB1 regulator specification and a 2 pin IG-L connection (plug type IDL-IG). Listed for BMW models including 320i, 325, 330, 525, 530, X5 and Z3 variants where the alternator/regulator reference matches. Specified with active lamp function, 10 sec LRC behaviour and short circuit protection. Confirm by alternator label and plug style before ordering.
- BMW: 320i
- BMW: 325Ci Cabrio; 325Ci Coupe
- BMW: 325i Touring
- BMW: 325Ti Compact
- BMW: 330Ci Cabrio; 330Ci Coupe
- BMW: 330i; 520i
- BMW: 525i Touring
- BMW: 530i
- BMW: X5 3.0L
- BMW Z3: 2.2L; 2.5L; 3.0L
- BMW Z3: 3.0L Coupe
Specifications
- Reference: REG1108
- Part Type: Alternator Voltage Regulator
- Manufacturer: Bosch
- System Voltage: 12V
- Operating Voltage: 14V
- Regulated Voltage (Set Point): 14.4V (VS=14.4V)
- Charging Voltage: 14.5V
- Circuit: A-Circuit
- Type: IR/IF (Internal Regulator / Internal Fan)
- Connector / Pins: 2 Pin (IG-L)
- Plug Type: IDL-IG
- Specification: 10 Sec. LRC; Active Lamp
- Short Circuit Protection: Yes
OE Numbers
- BMW: 7501752
Cross References
- Bosch: F00M145360
- NCB1: NCB1 regulator specification
Features
- Bosch NCB1 regulator design for matched BMW alternator configurations using a 2 pin IG-L interface
- A-circuit control strategy with IR/IF internal regulator internal fan configuration for specified alternator housings
- 14.4V set point (VS=14.4V) with 14.5V charging control for stable 12V system charging
- 10 second LRC behaviour with active lamp function for correct warning lamp and load response behaviour
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
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 plug is 2 pin IG-L (IDL-IG) and the alternator is Bosch NCB1 type before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure all charging circuit connections and earth points are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm warning lamp behaviour is correct
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
Description
Vehicle Compatibility
Alternator voltage regulator for select Bosch alternator applications on BMW vehicles where the alternator uses a matching NCB1 regulator specification and a 2 pin IG-L connection (plug type IDL-IG). Listed for BMW models including 320i, 325, 330, 525, 530, X5 and Z3 variants where the alternator/regulator reference matches. Specified with active lamp function, 10 sec LRC behaviour and short circuit protection. Confirm by alternator label and plug style before ordering.
- BMW: 320i
- BMW: 325Ci Cabrio; 325Ci Coupe
- BMW: 325i Touring
- BMW: 325Ti Compact
- BMW: 330Ci Cabrio; 330Ci Coupe
- BMW: 330i; 520i
- BMW: 525i Touring
- BMW: 530i
- BMW: X5 3.0L
- BMW Z3: 2.2L; 2.5L; 3.0L
- BMW Z3: 3.0L Coupe
Specifications
- Reference: REG1108
- Part Type: Alternator Voltage Regulator
- Manufacturer: Bosch
- System Voltage: 12V
- Operating Voltage: 14V
- Regulated Voltage (Set Point): 14.4V (VS=14.4V)
- Charging Voltage: 14.5V
- Circuit: A-Circuit
- Type: IR/IF (Internal Regulator / Internal Fan)
- Connector / Pins: 2 Pin (IG-L)
- Plug Type: IDL-IG
- Specification: 10 Sec. LRC; Active Lamp
- Short Circuit Protection: Yes
OE Numbers
- BMW: 7501752
Cross References
- Bosch: F00M145360
- NCB1: NCB1 regulator specification
Features
- Bosch NCB1 regulator design for matched BMW alternator configurations using a 2 pin IG-L interface
- A-circuit control strategy with IR/IF internal regulator internal fan configuration for specified alternator housings
- 14.4V set point (VS=14.4V) with 14.5V charging control for stable 12V system charging
- 10 second LRC behaviour with active lamp function for correct warning lamp and load response behaviour
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
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 plug is 2 pin IG-L (IDL-IG) and the alternator is Bosch NCB1 type before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure all charging circuit connections and earth points are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm warning lamp behaviour is correct
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
