Alternator Voltage Regulator 12V Iskra AAK A Circuit IR EF Lada REG7903
Vehicle Compatibility
Alternator voltage regulator for Iskra AAK alternator applications where the alternator uses a matching A-circuit control strategy and IR/EF (internal regulator / external fan) configuration. Listed against Lada OE references and also used across multiple agricultural and industrial alternator applications where the alternator/regulator reference matches. Specified with an inactive lamp function and the same charging characteristics. Confirm by alternator label and OE number before ordering.
- Lada: Applications matching OE T2223701010; 21083-701010; 224370701
- AAK / Iskra: Alternator applications using A-circuit IR/EF regulator configuration
- Industrial / Agricultural (where cross-reference matches): AGCO; Deutz; Fendt; JW; KHD; Kramer; Lamborghini; Linde; Manitou; Marshall; Massey Ferguson; Steyr; VM; Volkswagen; Waco
Specifications
- Reference: REG7903
- Part Type: Alternator Voltage Regulator
- Alternator Manufacturer: Iskra (AAK)
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.2V
- Regulated Voltage (Set Point): 14.4V (VS=14.4V)
- Circuit: A-Circuit
- Type: IR/EF (Internal Regulator / External Fan)
- Specification: Inactive Lamp
OE Numbers
- Lada: T2223701010
- Lada: 21083-701010
- Lada: 224370701
Features
- Iskra AAK regulator design to suit matched alternator housings using A-circuit control
- Inactive lamp specification for the correct warning lamp behaviour on compatible systems
- 14.2V charging control with a VS=14.4V set point specification for stable 12V system charging
- IR/EF internal regulator with external fan configuration for specified alternator builds
- Helps restore charging performance where regulator faults cause undercharge, overcharge, or charging light issues
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 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 regulator replacement
- Confirm the alternator is Iskra AAK and uses an A-circuit IR/EF regulator configuration 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 are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm charging light behaviour is correct for the application
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Vehicle Compatibility
Alternator voltage regulator for Iskra AAK alternator applications where the alternator uses a matching A-circuit control strategy and IR/EF (internal regulator / external fan) configuration. Listed against Lada OE references and also used across multiple agricultural and industrial alternator applications where the alternator/regulator reference matches. Specified with an inactive lamp function and the same charging characteristics. Confirm by alternator label and OE number before ordering.
- Lada: Applications matching OE T2223701010; 21083-701010; 224370701
- AAK / Iskra: Alternator applications using A-circuit IR/EF regulator configuration
- Industrial / Agricultural (where cross-reference matches): AGCO; Deutz; Fendt; JW; KHD; Kramer; Lamborghini; Linde; Manitou; Marshall; Massey Ferguson; Steyr; VM; Volkswagen; Waco
Specifications
- Reference: REG7903
- Part Type: Alternator Voltage Regulator
- Alternator Manufacturer: Iskra (AAK)
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.2V
- Regulated Voltage (Set Point): 14.4V (VS=14.4V)
- Circuit: A-Circuit
- Type: IR/EF (Internal Regulator / External Fan)
- Specification: Inactive Lamp
OE Numbers
- Lada: T2223701010
- Lada: 21083-701010
- Lada: 224370701
Features
- Iskra AAK regulator design to suit matched alternator housings using A-circuit control
- Inactive lamp specification for the correct warning lamp behaviour on compatible systems
- 14.2V charging control with a VS=14.4V set point specification for stable 12V system charging
- IR/EF internal regulator with external fan configuration for specified alternator builds
- Helps restore charging performance where regulator faults cause undercharge, overcharge, or charging light issues
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 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 regulator replacement
- Confirm the alternator is Iskra AAK and uses an A-circuit IR/EF regulator configuration 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 are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm charging light behaviour is correct for the application
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
