OEM Bosch Voltage Regulator IB229

Specifications

• MFR: BOSCH
• FEATURE 1: 100% New
• FEATURE 2: 6 Second LRC
• FEATURE 3: Stator activated
• FEATURE 4: Duty Cycle Modulation
• FEATURE 5: Factory-installed Brush Holder Assembly
• NOTE 1: Active lamp function - with output.
• SPECS FOR: Bosch IR/IF Alternators
• SPECS: 12 Volt, A-Circuit, L Terminal, 14.5 Vset

Used On

• Volvo (1999-2005)
• Volvo - Europe (1997-2010)

Replaces

Bosch: F 00M 145 208, F 00M 145 229, F 00M 145 351
Volvo: 9459741, 9459741-6

Lester Numbers

13802, 13997

Unit Numbers

Bosch: 0 124 515 017, 0 124 525 001
Volvo: 36050264, 8111001-0, 8111001-7, 8602275, 8602275-0, 8602277, 8602712, 8602712-0, 8602712-5, 8637847, 8676489, 9442841, 9442841-0, 9442841-4, 9489312

Vehicle Application

Volvo Car
S60 L5 2.3L 2319cc 2001-2004
S60 L5 2.4L 2435cc 2001
S80 L6 2.8L 2798cc 1999-2001
S80 L6 2.9L 2917cc 1999-2001
S80 L6 2.9L 2917cc 2002-2005
V70 L5 2.4L 2435cc 2001-2004

Volvo Truck
XC90 L6 2.9L 2917cc 2003-2005

Volvo - Europe Car
S60 2000, Turbo, B5204T5 2000-2004
S60 2300, Turbo, B5234T3 2000-2004
S60 2400, B5244S G2 2000-2004
S60 2400, Turbo, B5244T3 2000-2003
S60 2400, Turbo, B5244T4 2004
S60 2500, Turbo, B5254T2 2004
S60 I Eng.B 5204 T5 2.0 T 132kW B 5204 T5 2000-2004
S60 I Eng.B 5234 T3 T5 184kW B 5234 T3 2000-2010
S60 I Eng.B 5244 S 2.4 125kW B 5244 S 2000-2004
S60 I Eng.B 5244 S2 2.4 103kW B 5244 S2 2000-2004
S60 I Eng.B 5244 SG 2.4 Bifuel (CNG) 103kW B 5244 SG 2002-2004
S60 I Eng.B 5244 SG2 2.4 Bifuel (LPG) 103kW B 5244 SG2 2002-2004
S60 I Eng.B 5244 T3 2.4 T 147kW B 5244 T3 2000-2004
S60 I Eng.B 5244 T3 2.4 T AWD 147kW B 5244 T3 2001-2004
S60 I Eng.B 5244 T5 2.4 T5 191kW B 5244 T5 2004
S80 2000, Turbo, B5204T5 2000-2004
S80 2400, B5244S G2 2000-2004
S80 2400, B5244S S2 1998-2006
S80 2400, D5244T 2001-2006
S80 2400, Turbo, B5244T3 2001-2003
S80 2500, Turbo, B5254T2 2003-2004
S80 2800, B6284T 1998-2001
S80 2900, B6294T 2002-2004
S80 I (TS, XY) Eng.B 5204 T4 2.0 120kW B 5204 T4 1998-2004
S80 I (TS, XY) Eng.B 5204 T5 2.0 T 132kW B 5204 T5 1999-2004
S80 I (TS, XY) Eng.B 5244 S 2.4 125kW B 5244 S 1999-2004
S80 I (TS, XY) Eng.B 5244 SG 2.4 Bifuel (LPG) 103kW B 5244 SG 2001-2004
S80 I (TS, XY) Eng.B 5244 SG2 2.4 Bifuel (CNG) 103kW B 5244 SG2 2001-2004
S80 I (TS, XY) Eng.B 5244 T3 2.4 T 147kW B 5244 T3 2000-2004
S80 I (TS, XY) Eng.B 5244 T3 2.4 T5 AWD 147kW B 5244 T3 2000-2003
S80 I (TS, XY) Eng.B 5254 T2 2.5 T 154kW B 5254 T2 2003-2004
S80 I (TS, XY) Eng.B 5254 T2 2.5 T AWD 154kW B 5254 T2 2003-2004
S80 I (TS, XY) Eng.B 6294 S 2.9 147kW B 6294 S 1999-2006
S80 I (TS, XY) Eng.B 6294 S2 3.0 144kW B 6294 S2 2001-2006
S80 I (TS, XY) Eng.B 6294 T 3.0 T6 200kW B 6294 T 2001-2006
V70 Cross Country 2400, Turbo, B5244T3 2000-2002
V70 II (SW) Eng.B 5204 T5 2.0 T 132kW B 5204 T5 2001-2004
V70 II (SW) Eng.B 5234 T3, B 5234 T4 2.3 T5 184kW B 5234 T3; B 5234 T4 2000-2004
V70 II (SW) Eng.B 5234 T7 2.3 195kW B 5234 T7 2000-2004
V70 II (SW) Eng.B 5244 S 2.4 125kW B 5244 S 2000-2004
V70 II (SW) Eng.B 5244 S2 2.4 103kW B 5244 S2 2000-2004
V70 II (SW) Eng.B 5244 SG 2.4 Bifuel (LPG) 103kW B 5244 SG 2001-2004
V70 II (SW) Eng.B 5244 SG2 2.4 Bifuel (CNG) 103kW B 5244 SG2 2001-2004
V70 II (SW) Eng.B 5244 T3 2.4 T 147kW B 5244 T3 2000-2003
V70 II (SW) Eng.B 5244 T3 2.4 T AWD 147kW B 5244 T3 2001-2002
V70 II (SW) Eng.B 5244 T5 2.4 T5 191kW B 5244 T5 2004
V70 II (SW) Eng.B 5254 T2 2.5 AWD 155kW B 5254 T2 2002-2004
V70 II (SW) Eng.B 5254 T2 2.5 T 154kW B 5254 T2 2004
V70 II (SW) Eng.B 5254 T2 2.5 T AWD 154kW B 5254 T2 2002-2004
V70 II (SW) Eng.B 5254 T4 2.5 R Sport 221kW B 5254 T4 2002-2004
V70 II (SW) Eng.B 5254 T4 R 2.5 T AWD 221kW B 5254 T4 2003-2004
V70 II (SW) Eng.D 5244 T, D 5244 T2, D 5244 T5 2.4 D5 AWD 120kW D 5244 T; D 5244 T2; D 5244 T5 2003-2004
V70 II (SW) Eng.D 5244 T, D 5244 T5 2.4 D5 120kW D 5244 T; D 5244 T5 2001-2004
V70 II (SW) Eng.D 5244 T2 2.4 D 96kW D 5244 T2 2001-2004
V70 Mk2 2000, Turbo, B5204T5 2000-2004
V70 Mk2 2400, B5244S S2 2000-2004
V70 Mk2 2400, B5244SG2 2001-2004
V70 Mk2 2400, D5244T T2 5 7 2001-2004
V70 Mk2 2400, Turbo, B5244T3 2000-2003
V70 Mk2 2400, Turbo, B5244T5 2004
V70 Mk2 2500, D5252T 2000-2001
V70 Mk2 2500, Turbo, B5254T2 2002-2004
XC70 2400, D5244T 2001-2004
XC70 2500, Turbo, B5254T2 2002-2004
XC70 CROSS COUNTRY Eng.B 5244 T3 2.4 T XC AWD 147kW B 5244 T3 2000-2002
XC70 CROSS COUNTRY Eng.B 5254 T 2.4 T XC AWD 142kW B 5254 T 1997-2002
XC70 CROSS COUNTRY Eng.B 5254 T2 2.5 T XC AWD 154kW B 5254 T2 2002-2004

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.