Alternator Voltage Regulator 12V Hitachi Honda Isuzu 3.2 2 Pin IDL Sense Inactive Lamp REG3021
Alternator Voltage Regulator 12V Hitachi Honda Isuzu 3.2 2 Pin IDL Sense Inactive Lamp REG3021
Vehicle Compatibility
Alternator voltage regulator for select Hitachi alternator applications used on Honda and Isuzu platforms noted as 3.2L where the alternator uses a matching IDL-Sense plug layout and the same charging characteristics. Specified with an inactive lamp function and short circuit protection. Commonly identified by Hitachi references L180G-63401, L185G-5340 and L190G-8340. Confirm by alternator label and plug style before ordering.
- Honda: 3.2L alternator applications using Hitachi IDL-Sense regulator layout
- Isuzu: 3.2L alternator applications using Hitachi IDL-Sense regulator layout
- Subaru (cross reference): 23812-AA000 (where alternator/regulator reference matches)
Specifications
- Reference: REG3021
- Part Type: Alternator Voltage Regulator
- Manufacturer: Hitachi
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.3V
- Regulated Voltage (Designation): 14.5V
- Plug Type: IDL-Sense
- Specification: Inactive Lamp
- Short Circuit Protection: Yes
OE Numbers
- Hitachi: L180G-63401
- Hitachi: L185G-5340
- Hitachi: L190G-8340
- Subaru: 23812-AA000
Cross References
- Mobiletron: VR-H2000-62
- Other Suppliers: REG3021
Features
- Hitachi regulator design for matched Honda and Isuzu 3.2L alternator configurations using IDL-Sense interface
- Inactive lamp specification for correct warning lamp behaviour on compatible charging systems
- 14.3V charging control for stable battery charging performance on 12V systems
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
- Suitable replacement option where Hitachi L180G-63401, L185G-5340 or L190G-8340 references match
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 type matches IDL-Sense and the alternator references match before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure 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 charging performance is stable
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
Original: $36.81
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$11.04Product Information
Product Information
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Description
Vehicle Compatibility
Alternator voltage regulator for select Hitachi alternator applications used on Honda and Isuzu platforms noted as 3.2L where the alternator uses a matching IDL-Sense plug layout and the same charging characteristics. Specified with an inactive lamp function and short circuit protection. Commonly identified by Hitachi references L180G-63401, L185G-5340 and L190G-8340. Confirm by alternator label and plug style before ordering.
- Honda: 3.2L alternator applications using Hitachi IDL-Sense regulator layout
- Isuzu: 3.2L alternator applications using Hitachi IDL-Sense regulator layout
- Subaru (cross reference): 23812-AA000 (where alternator/regulator reference matches)
Specifications
- Reference: REG3021
- Part Type: Alternator Voltage Regulator
- Manufacturer: Hitachi
- System Voltage: 12V
- Operating Voltage: 14V
- Charging Voltage: 14.3V
- Regulated Voltage (Designation): 14.5V
- Plug Type: IDL-Sense
- Specification: Inactive Lamp
- Short Circuit Protection: Yes
OE Numbers
- Hitachi: L180G-63401
- Hitachi: L185G-5340
- Hitachi: L190G-8340
- Subaru: 23812-AA000
Cross References
- Mobiletron: VR-H2000-62
- Other Suppliers: REG3021
Features
- Hitachi regulator design for matched Honda and Isuzu 3.2L alternator configurations using IDL-Sense interface
- Inactive lamp specification for correct warning lamp behaviour on compatible charging systems
- 14.3V charging control for stable battery charging performance on 12V systems
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
- Suitable replacement option where Hitachi L180G-63401, L185G-5340 or L190G-8340 references match
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 type matches IDL-Sense and the alternator references match before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure 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 charging performance is stable
- If you are unsure about alternator repairs, have the unit fitted and tested by a qualified auto electrician
