Valeo 439317 Alternator

Overview of Valeo Alternator 439317 for BMW M3 and Z3

The Valeo Alternator 439317 is designed specifically for BMW M3 and Z3 models, providing reliable 12-volt electrical charging performance. Engineered with an internal fan and regulator, this alternator supports efficient power generation and consistent battery charging for your vehicle.

• Voltage: 12V for standard automotive electrical systems
• Internal fan type for optimized cooling
• Clockwise rotation direction
• 6-groove pulley compatible with serpentine belts
• Internal voltage regulator for stable output
• Amperage rating of 120A to meet vehicle power demands
• Durable housing material ensuring long service life
• Technical number: Sg12b039 for precise identification

Detailed Features and Specifications

This Valeo Alternator 439317 belongs to the Valeo oe family, ensuring original equipment quality and fitment. The alternator operates at 12 volts with a 120-amp output, suitable for the electrical requirements of BMW M3 and Z3 vehicles. Its internal fan design helps maintain optimal operating temperatures, while the internal regulator ensures consistent voltage output to protect your vehicle’s electrical components. The clockwise rotation and 6-groove pulley are designed to match the serpentine belt system used in these BMW models, facilitating straightforward installation and reliable operation.

Valeo Alternator Product Line

The Valeo Alternator product line focuses on delivering OE-quality charging components that meet manufacturer specifications. This line emphasizes durability, precise fitment, and efficient electrical performance. The 439317 alternator is part of this line, offering a direct replacement solution for BMW M3 and Z3 vehicles requiring dependable charging system components.

Common Applications and Problem Resolution

• Replaces faulty or worn alternators in BMW M3 and Z3 models
• Resolves battery charging issues and electrical system failures
• Eliminates dimming headlights or electrical accessory malfunctions
• Addresses serpentine belt compatibility with 6-groove pulley design
• Prevents voltage irregularities with internal regulator technology

Installation Notes and Tips

When installing the Valeo Alternator 439317, ensure the serpentine belt is properly aligned with the 6-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. Proper torque specifications should be followed to avoid damage to the housing or mounting points.

Quality Assurance and Warranty

Valeo alternators are manufactured to meet stringent OE standards, ensuring reliable performance and durability. The 439317 alternator undergoes rigorous testing for voltage output, amperage capacity, and mechanical integrity. While specific warranty details may vary, Valeo typically offers coverage against manufacturing defects to provide confidence in product quality.