Bosch 1986.AE0.045 Voltage Regulator for 180 Amp Alternators

The Bosch 1986.AE0.045 is a precision-engineered electronic voltage regulator designed specifically for vehicles equipped with Bosch 180-amp alternators. This OEM-quality component maintains consistent voltage output and converts alternating current (AC) produced by the alternator into direct current (DC) needed to power your vehicle's electrical system.

Key Features:

• BSS (COM) regulator with COM ID Code 6
• B-Circuit design with voltage control managed by the vehicle's ECU
• Stator activated with field short circuit protection
• Limits voltage output to 12-14 volts for optimal system performance
• Includes integrated brush holder for complete installation
• Built to strict OEM specifications for reliable, long-lasting performance

This voltage regulator prevents damage to electrical components by maintaining steady voltage output, helping to avoid common issues like battery drain, flickering lights, and engine surging. It supersedes earlier Bosch part numbers F00M346013, F00M346024, F00M346033, and F00M346089, and crosses to BMW part numbers 12-31-7-552-817, 12-31-7-561-924, and 12-31-7-561-939.

Application: For use with Bosch IR/IF alternators in vehicles requiring ECU-controlled voltage regulation.