Remy 12977 Alternator

Reliable Alternator for Mercedes-Benz Models

The Remy Premium Remanufactured Alternator 12977 is designed to restore charging system performance in select Mercedes-Benz vehicles. Engineered with a 180-amp rating and internal voltage regulator, this alternator supports consistent electrical output for models like the G550, GL450, and ML350.

• Amperage Rating: 180 amps for robust electrical supply
• Fan Type: Internal fan for efficient cooling
• Remanufactured unit ensuring quality and durability
• OE Manufacturer: Valeo, maintaining original equipment standards
• Pulley Included for straightforward installation
• Rotation Direction: Clockwise to match factory specifications
• Voltage: 12 volts compatible with standard vehicle systems
• Internal Voltage Regulator for stable voltage control

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators that have been carefully rebuilt to meet or exceed original equipment specifications. This process includes thorough testing and replacement of worn components, providing a reliable alternative to new parts. The 12977 alternator benefits from this approach, delivering dependable performance for Mercedes-Benz vehicles requiring a remanufactured charging system component.

Product Details and Compatibility

This alternator is specifically compatible with Mercedes-Benz models including the G550, GL450, GL550, ML350, ML550, R350, and SLK350. Its 180-amp output supports the electrical demands of these vehicles, while the internal fan and voltage regulator help maintain optimal operating temperatures and voltage stability. The clockwise rotation and included pulley ensure a direct fit replacement, simplifying the installation process.

Common Issues Addressed by This Alternator

• Battery not charging or losing charge quickly
• Dim or flickering dashboard and exterior lights
• Electrical system warning lights illuminated on the dash
• Unusual noises from the alternator area
• Vehicle stalling or difficulty starting due to electrical failure

Installation Notes and Tips

Before installation, verify vehicle compatibility with the part number 12977. Disconnect the battery to prevent electrical shorts. The included pulley and clockwise rotation match factory specifications, allowing for a direct replacement without modification. Ensure all electrical connections are secure and inspect belts for wear during installation.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo comprehensive testing to ensure performance and reliability. Manufactured to meet OE standards with components from Valeo, this alternator provides a dependable solution for Mercedes-Benz charging system repairs. Warranty details should be confirmed with the supplier or manufacturer.