Bosch AL9377X Alternator

Overview of Bosch AL9377X Remanufactured Alternator

The Bosch AL9377X is a remanufactured alternator designed specifically for select Mercedes-Benz models including the G550, GL450, GL550, ML350, ML550, R350, R550, and SLK350. This 12-volt alternator delivers reliable electrical charging performance with a 180-amp rating, ensuring your vehicle's electrical system operates efficiently.

• 12-volt electrical system compatibility
• 180 amp amperage rating for robust charging
• Internal fan type with clockwise rotation
• Includes a 6-groove pulley with a 51 mm outside diameter
• Aluminum case material and color for durability and heat dissipation
• Internal regulator type for streamlined operation
• Remanufactured unit meeting OEM specifications

Detailed Product Features and Specifications

The Bosch AL9377X alternator features an internal fan design that promotes efficient cooling while maintaining a compact form factor. Its clockwise rotation and 6-groove pulley (6s type) with a 51 mm diameter are engineered to match the belt system of compatible Mercedes-Benz vehicles. The alternator’s aluminum case provides lightweight durability and effective heat dissipation, contributing to consistent performance under various driving conditions. This unit includes the pulley but does not come with an external fan or external regulator, as it utilizes an internal regulator system. The plug clock rear view main mounting ear is positioned at 6 o'clock, facilitating proper fitment and installation.

Alternator (Remanufactured) Product Line Information

The Bosch Alternator (Remanufactured) product line offers remanufactured alternators that meet strict quality standards to restore vehicle charging systems to original equipment performance. These alternators undergo comprehensive testing and refurbishment processes to ensure reliability and compatibility with specific vehicle makes and models. The AL9377X is part of this line, providing a cost-effective alternative to new units while maintaining Bosch’s engineering standards.

Compatible Vehicles and Common Applications

This Bosch AL9377X alternator is compatible with a range of Mercedes-Benz models, including:

• Mercedes-Benz G550
• Mercedes-Benz GL450 and GL550
• Mercedes-Benz ML350 and ML550
• Mercedes-Benz R350 and R550
• Mercedes-Benz SLK350

It is designed to address issues such as:

• Battery not charging properly or draining quickly
• Dim or flickering dashboard and headlights
• Warning lights related to the charging system
• Unusual noises from the alternator pulley or bearings
• Electrical system malfunctions due to alternator failure

Installation Notes and Tips

When installing the Bosch AL9377X alternator, ensure the vehicle’s battery is disconnected to prevent electrical shorts. Verify the pulley alignment and belt tension to avoid premature wear. The internal regulator eliminates the need for external components, simplifying installation. Properly secure the mounting ear at the 6 o'clock position for correct fitment. It is recommended to inspect the belt and related components during installation to maintain optimal charging system performance.

Quality Assurance and Warranty

As a remanufactured unit, the Bosch AL9377X alternator undergoes rigorous testing to meet OEM standards for performance and durability. Bosch’s remanufacturing process includes inspection, replacement of worn parts, and performance verification. While specific warranty details may vary, Bosch remanufactured alternators typically come with a limited warranty to provide confidence in product reliability.