Bosch F04R320375 Alternator Voltage Regulator

The Bosch F04R320375 is a precision-engineered alternator voltage regulator designed to maintain stable electrical system performance in European and domestic vehicles. This OEM-quality component regulates alternator voltage output and converts alternating current (AC) produced by the alternator into the direct current (DC) required by your vehicle's electrical systems and battery.

Key Features:

• Designed for 65-115 amp Bosch alternators with round button-type connection
• Features long brush design for extended service life
• Regulates voltage output to optimal 12-14 volt range
• Uses diodes to efficiently convert AC to DC current
• Direct OEM replacement from Bosch, the world's leading automotive supplier
• Compatible with various European vehicle makes including Audi, BMW, Mercedes-Benz, Porsche, Saab, Volvo, and Volkswagen

This voltage regulator is essential for preventing electrical system issues such as dimming lights, instrument panel malfunctions, battery discharge, and voltage fluctuations. The Bosch F04R320375 cross-references to multiple OEM part numbers including 1197311021, 1197311028, 30091, 3523710, and many Bosch alternator assemblies. When replacing your voltage regulator, verify the Bosch number on your existing regulator assembly to ensure proper application.