Valeo 439636 Alternator

Overview of Valeo Alternator 439636 for BMW Models

The Valeo Alternator 439636 is designed to provide reliable electrical charging performance for select BMW vehicles. Engineered with a 12-volt system and internal fan type, this alternator supports models such as the BMW 550i, 650i, 750Li, X5, and X6, ensuring consistent power delivery and efficient operation.

• Voltage: 12V
• Amperage Rating: 230A
• Internal fan for optimized cooling
• Clockwise rotation direction
• 7-groove serpentine pulley
• Aluminium housing for durability and heat dissipation
• Internal regulator type for stable voltage output
• Compatible with BMW 550i, 650i, 750Li, X5, X6 and related xDrive models

Valeo Alternator Product Line Details

This alternator is part of the Valeo Alternator product line, which focuses on original equipment (OE) quality components. The Valeo oe family ensures that each alternator meets strict manufacturing standards for fit, form, and function, making it suitable for direct replacement in BMW vehicles. The internal regulator and fan design contribute to efficient performance and longevity under typical driving conditions.

Technical Description and Features

The Valeo 439636 alternator operates at 12 volts with a high amperage rating of 230 amps, supporting the electrical demands of luxury BMW models. Its internal fan type helps maintain optimal operating temperatures by providing consistent airflow within the unit. The clockwise rotation direction matches the original equipment specifications for the listed BMW models. The 7-groove serpentine pulley is designed to work with the vehicle’s belt system, ensuring smooth power transfer. The aluminium housing offers strength and effective heat dissipation, which is critical for maintaining alternator performance and durability. An internal voltage regulator maintains stable output voltage, protecting the vehicle’s electrical system.

Compatible BMW Models and Applications

• BMW 550i, 550i GT, 550i GT xDrive, 550i xDrive
• BMW 650i, 650i xDrive
• BMW 750i, 750i xDrive, 750Li, 750Li xDrive
• BMW X5 and X6 models

This alternator is designed to replace the original unit in these BMW models, addressing common electrical charging issues.

Common Issues Addressed by Valeo Alternator 439636

• Battery not charging or slow charging
• Dim or flickering dashboard and headlights
• Electrical system warning lights illuminated
• Unusual noises from the alternator pulley or fan
• Vehicle stalling or difficulty starting due to low electrical output

Installation Notes and Tips

When installing the Valeo Alternator 439636, ensure the serpentine belt is properly aligned with the 7-groove pulley. Verify the clockwise rotation direction matches the vehicle’s original alternator. It is recommended to inspect the battery and electrical connections for corrosion or damage before installation. Use appropriate torque specifications for mounting bolts and reconnect all electrical connectors securely. Testing the charging system after installation will confirm proper operation.

Quality Assurance and Warranty

Valeo alternators are manufactured to meet OE standards, ensuring reliable performance and durability. The aluminium housing and internal components are designed for long service life under normal operating conditions. While specific warranty details may vary, Valeo typically offers coverage against manufacturing defects. Consult the product documentation or supplier for exact warranty terms related to part number 439636.