Description
Vehicle Compatibility & OE Cross Reference
Alternator voltage regulator for select BMW applications where the original regulator uses a BSS (COM) communication specification (BSS 3) and matches a 2 pin connection with IDCPU D plug type. Listed for BMW E46 316i and BMW E46 318i. Confirm by alternator label, regulator connection and OE number cross reference before ordering.
OE Numbers By Brand
- BMW: 12317505922; 12317523059; 12317540656
Specifications
- Reference: REG1107
- Part Type: Alternator Voltage Regulator
- System Voltage: 12V
- Charging Voltage: 14.3V
- Operating Voltage: 14V
- Voltage Range: From 10.7V To 16.0V
- Specification: BSS (COM) BSS 3
- Connector / Pins: 2 Pin
- Plug Type: IDCPU D
- OE Numbers: 12317505922; 12317523059; 12317540656
Features
- Designed for BMW charging systems using BSS (COM) communication control (BSS 3)
- 2 pin connection with IDCPU D plug type to match the specified regulator interface
- Charging behaviour aligned to the listed specification, including 14.3V charging voltage and 10.7V to 16.0V range
- Useful for alternator overhaul work where the original regulator matches the OE numbers listed
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, regulator markings and plug photos
- Trusted by workshops and DIY customers for reliable 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 regulator connection is 2 pin IDCPU D and the alternator uses BSS (COM) control before fitting
- Cross check the BMW OE numbers and compare the plug layout to the original regulator
- Inspect brushes and slip rings while the alternator is open and replace worn components where required
- After installation, verify charging voltage 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).