Bosch AL8859X Alternator

Reliable Remanufactured Alternator for Select GM Vehicles

The Bosch AL8859X Alternator (Remanufactured) is designed to provide dependable electrical charging performance for a range of Buick, Cadillac, Chevrolet, and GMC models. Engineered to meet OEM specifications, this 12-volt alternator ensures consistent power delivery and efficient operation.

Key Features of Bosch AL8859X Alternator

• Voltage: 12V system compatibility
• Amperage Rating: 150 amps for robust electrical output
• Internal fan type with clockwise rotation direction
• Includes a 5-groove pulley with a 55.9 mm outside diameter
• Internal regulator type for streamlined voltage control
• Aluminum case material and color for durability and heat dissipation
• Plug type 929 with rear view main mounting ear positioned at 6 o'clock
• Remanufactured unit meeting strict quality standards

About the Bosch Alternator (Remanufactured) Product Line

The Bosch Alternator (Remanufactured) line offers high-quality remanufactured alternators that restore vehicle charging systems to proper function. Each unit undergoes rigorous testing and refurbishment to ensure reliability and performance comparable to new parts. The AL8859X is part of this line, providing a cost-effective solution without compromising on durability or fitment accuracy.

Detailed Product Description

This Bosch AL8859X alternator features an internal fan design that promotes efficient cooling while maintaining a compact form factor. The clockwise rotation and 5-groove pulley system are engineered to match the belt configurations found in compatible GM vehicles. Its aluminum case not only reduces weight but also enhances heat dissipation during operation. The internal voltage regulator simplifies installation and reduces the need for external components. Designed specifically for 12-volt electrical systems, this alternator supports a 150-amp output, suitable for vehicles with moderate to high electrical demands.

Compatible Vehicles and Common Applications

• Buick Regal, Regal Sportback, Regal TourX
• Cadillac ATS, CTS
• Chevrolet Blazer, Camaro, Colorado, Impala, Malibu, Malibu Limited
• GMC Canyon

This alternator is ideal for addressing issues such as:

• Battery not charging or slow charging
• Dim or flickering headlights and electrical accessories
• Warning lights related to the charging system
• Unusual noises from the alternator pulley or bearings
• Intermittent electrical failures or power loss

Installation Notes and Tips

When installing the Bosch AL8859X alternator, ensure the pulley alignment matches the vehicle’s belt system, specifically the 5-groove (5s) belt type. Verify the plug type 929 and mounting ear position at 6 o'clock for proper fitment. Since this unit includes an internal regulator, no external voltage regulator is required. Always disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

As a remanufactured product, the Bosch AL8859X alternator undergoes comprehensive testing to meet strict quality standards. Bosch ensures that each unit performs reliably under normal operating conditions. Warranty coverage details should be confirmed with the distributor or retailer, as they may vary.