OEM Bosch Voltage Regulator IB6132

Specifications

• MFR: BOSCH
• FEATURE 1: 100% New
• FEATURE 2: BSS (COM) Regulator
• FEATURE 3: COM ID Code: 12
• FEATURE 4: Stator Activated
• FEATURE 5: Soft Start & LRC Function
• FEATURE 6: Field Short Circuit Protection
• NOTE 1: Companion rectifier IBR240
• NOTE 2: Terminal Identification: Bss-DFM
• SPECS FOR: Bosch IR/IF Alternators
• SPECS: 12 Volt, A-Circuit, Volt Set Controlled by on board Computer 10.7V to 16.0V

Used On

• Mercedes-Benz (2005-2006)

Replaces

Bosch: F 00M 144 108, F 00M 144 132, F 00M 144 156, F 00M 145 292, F 00M 145 374, F 00M 145 884
Mercedes-Benz: 003-154-59-06, 003-154-71-06, 004-154-03-06, A003-154-59-06, A003-154-71-06, A004-154-03-06

Lester Numbers

11216

Unit Numbers

Bosch: 0 124 625 014, 0 124 625 015, 0 124 625 045, 0 986 048 550, 0 986 048 557
Marelli: 063536250450
Mercedes-Benz: 012-154-99-02, 013 154 0002, 013-154-00-02, A0131540002, A0141540702

Vehicle Application

Mercedes - Europe Car
C200 2200 Cdi 2003-2007
C220D 2200 2003-2007
E220D 2200, OM646.961 2002-2010
E320D 3200 Cdi 2002-2010

Mercedes-Benz Car
E320 L6 3.2L 3222cc Diesel 2005-2006

Features & Benefits

• Genuine OEM replacement part
• Manufactured to original factory specifications
• Regulates alternator output voltage
• Helps maintain proper battery charging
• Supports stable charging system performance
• Original fit, function, and electrical characteristics
• Ideal for alternator rebuilding and repair
• Engineered for long-term reliability

What Does a Voltage Regulator Do?

The voltage regulator controls the alternator's output by regulating current supplied to the rotor field winding. As electrical demand changes, the regulator continuously adjusts field current to maintain the proper charging voltage for the battery and the vehicle's electrical system.

A properly functioning voltage regulator helps prevent battery overcharging and undercharging while protecting sensitive electrical components from excessive voltage. Because charging system performance depends on the interaction between the regulator, rotor, stator, rectifier, and battery, replacing a faulty regulator is an important step in restoring alternator performance.

Common Signs Replacement Is Needed

Replace the voltage regulator if you notice:

• Battery overcharging
• Battery not charging
• Low charging voltage
• High charging voltage
• Battery warning light illuminated
• Intermittent charging problems
• Headlights that brighten or dim with engine speed
• Charging system failure during testing
• Voltage regulator failure discovered during alternator rebuilding

Installation Recommendations

Installation should be performed by a qualified technician or experienced alternator rebuilder. Before installing the new regulator, inspect the brushes, brush holder, slip rings, rotor, stator, rectifier, wiring, and electrical connections for signs of wear or damage.

Always verify connector configuration and mounting style before installation. After assembly, bench-test the alternator to confirm proper charging voltage and overall charging system performance.

While You're Rebuilding

Inspect other common wear components to help maximize charging system reliability:

• Bearings
• Brushes
• Brush Holder
• Slip Rings
• Rectifier
• Diodes
• Rotor
• Clutch Pulley
• Insulators

Why Buy From RC Auto Electric?

RC Auto Electric specializes in genuine OEM and premium aftermarket alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.

Disclaimer

Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original OEM part number, connector configuration, mounting style, voltage specifications, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.