Valeo 439773 Alternator

Overview of Valeo Alternator 439773 for Mercedes-Benz

The Valeo Alternator 439773 is designed specifically for select Mercedes-Benz models including the C300, C350, and GLK350. This 12-volt alternator features an internal fan and regulator, ensuring efficient electrical charging and reliable performance tailored to your vehicle's needs.

• Voltage: 12V
• Internal fan type for optimized cooling
• Clockwise rotation direction
• 6-groove pulley compatible with serpentine belts
• Aluminium housing for durability and heat dissipation
• Internal voltage regulator for stable output
• Amperage rating of 180A to support electrical demands
• Technical number: Fgn18s099

Valeo Alternator Product Line Details

The Valeo Alternator product line focuses on original equipment (OE) quality components designed to meet or exceed manufacturer specifications. This alternator belongs to the Valeo OE family, ensuring compatibility and performance consistency for Mercedes-Benz vehicles. The line emphasizes durable materials like aluminium housings and incorporates internal regulators and fans to maintain optimal operating temperatures and electrical output.

Technical Description and Features

This alternator operates at 12 volts with a 180-amp rating, suitable for the electrical system demands of Mercedes-Benz C300, C350, and GLK350 models. The internal fan design aids in cooling the alternator during operation, while the internal regulator maintains voltage stability. The clockwise rotation direction and 6-groove pulley are engineered to fit serpentine belt systems commonly found in these vehicles. The aluminium housing provides strength and efficient heat dissipation, contributing to the alternator's longevity and reliability.

Common Applications and Problem Resolution

• Replaces faulty or worn-out alternators in Mercedes-Benz C300, C350, and GLK350
• Resolves battery charging issues and electrical system failures
• Addresses dimming headlights or electrical accessory malfunctions
• Eliminates warning lights related to charging system faults
• Prevents vehicle stalling caused by insufficient electrical power

Installation Notes and Tips

When installing the Valeo Alternator 439773, 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. Use appropriate torque specifications for mounting bolts and reconnect all electrical connectors securely. Testing the charging system after installation is advised to confirm proper operation.

Quality Assurance and Warranty

Valeo alternators are manufactured to meet OE standards, providing reliable performance and durability. This alternator is part of the Valeo OE family, reflecting strict quality control and engineering precision. While specific warranty details are not provided here, Valeo products typically come with manufacturer-backed warranties to cover defects in materials and workmanship.