Description
Vehicle Compatibility
Alternator voltage regulator for Nippon Denso alternators where the original regulator matches a B Circuit design with IR/IF internal regulator internal fan configuration and a 4 pin connector in the IG S L M layout (plug type IDIG Sense L CPU). Listed for Toyota Quantum and Lexus applications where the same regulator configuration is used. Confirm by regulator plug style and terminal layout before ordering.
- Toyota: Quantum
- Lexus: Lexus applications using a matching Nippon Denso 4 pin IG S L M regulator
Specifications
- Reference: REG6107
- Part Type: Alternator Voltage Regulator
- Manufacturer: Nippon Denso
- System Voltage: 12V
- Regulated Voltage (Set Point): 14.2V (VS=14.2V)
- Charging Voltage: 14.2V
- Operating Voltage: 14V
- Circuit: B Circuit
- Type: IR/IF (Internal Regulator / Internal Fan)
- Connector / Pins: 4 Pin (IG S L M)
- Plug Type: IDIG Sense L CPU
- Lamp Function: Inactive Lamp
- Short Circuit Protection: Yes
Features
- Controls alternator field current to support consistent charging on compatible Nippon Denso alternators
- 4 pin IG S L M connector layout with IDIG Sense L CPU plug type for correct interface matching
- B circuit design with IR/IF internal regulator internal fan configuration for the specified alternator layout
- 14.2V charging specification for matching 12V electrical systems
- Inactive lamp characteristic with short circuit protection for supported applications
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, plug photos and terminal layout confirmation
- 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
- Match the regulator by Nippon Denso manufacturer, B circuit design, and the 4 pin IG S L M 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 to confirm stable regulation
- 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).