Valeo 439397 Alternator

Overview of Valeo Alternator 439397 for BMW Vehicles

The Valeo Alternator 439397 is designed to provide reliable electrical charging for a range of BMW models. Engineered with a 12-volt system and an internal fan, this alternator supports efficient power generation and consistent vehicle performance.

• Voltage: 12V
• Fan Type: Internal
• Rotation Direction: Clockwise
• Pulley Groove Quantity: 6
• Housing Material: Aluminium
• Pulley Belt Type: Serpentine
• Regulator Type: Internal
• Amperage Rating: 90A
• Technical Number: Sg9b029

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 compatibility and durability, meeting the specifications required by BMW vehicles. The internal regulator and aluminium housing contribute to the alternator's efficient operation and heat dissipation.

Technical Description and Features

The Valeo Alternator 439397 features a 12-volt electrical system with a 90-amp output, suitable for maintaining battery charge and powering electrical systems in BMW models such as the 323i, 325Ci, 328i, 330i, 525i, 530i, M3, X5, and Z3. Its clockwise rotation and internal fan design optimize cooling during operation. The serpentine pulley with six grooves ensures secure belt engagement, reducing slippage and wear. The aluminium housing provides lightweight durability and effective heat management, while the internal regulator maintains voltage stability.

Compatible BMW Models and Common Applications

• Compatible with BMW 3 Series models including 323i, 325Ci, 325i, 325xi, 328i, 330Ci, 330i, and 330xi
• Suitable for BMW 5 Series models such as 525i and 530i
• Fits performance and SUV models including BMW M3 and X5
• Also compatible with BMW Z3 roadster
• Addresses issues like battery not charging, dimming lights, and electrical system failures

Installation Notes and Tips

• Ensure the serpentine belt is properly aligned on the 6-groove pulley
• Verify clockwise rotation compatibility with your vehicle’s engine setup
• Check electrical connections and ground points for corrosion before installation
• Use appropriate tools to avoid damage to the aluminium housing
• Follow vehicle-specific torque specifications when mounting the alternator

Quality Assurance and Warranty

The Valeo Alternator 439397 is manufactured to meet OE standards, ensuring reliable performance and durability. The internal regulator and robust aluminium housing contribute to long service life. Warranty coverage details should be confirmed with the parts provider or manufacturer, as they may vary by region.