- Voltage regulator, alternator
- Alternator voltage regulator controlling the charging voltage
- Controls alternator output so the battery charges correctly without overvoltage
- Mobiletron "VR-B238" - Not available
BMW - 3 (E46, WB), 5 (E39, WB), Z3, 7, 8, X5, Z8; ALPINA - Roadster V8