Bosch AL8813X Alternator

Bosch AL8813X Remanufactured Alternator

The Bosch AL8813X is a remanufactured 12-volt alternator built for charging-system replacement on select GM trucks and SUVs. It is engineered for direct-fit service on applications that use a 125 amp alternator, with fitment covering Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, Tahoe, Suburban, Avalanche, Express 1500, and GMC Sierra, Yukon, Savana, and Cadillac Escalade models.

Key Features

• 12-volt remanufactured alternator for charging-system repair
• 125 amp amperage rating for listed applications
• Internal fan and internal regulator design
• Clockwise rotation
• 6-groove pulley included with 57 mm outside diameter
• Aluminum case and aluminum case material
• External fan included and external regulator included
• Plug type 346 with rear-view plug clocking at 6 o’clock

Product Details

Bosch Premium Alternators are remanufactured, tested, and built to support reliable charging performance in demanding daily-use vehicles. This Bosch alternator, part number AL8813X, is specified for 125 amp systems and uses a 6S pulley configuration with internal fan cooling and internal regulation. The aluminum housing helps keep the unit lightweight while maintaining the OE-style layout expected for service replacement. This part cross-references GM OE numbers 15204278 and 22817848 for the same application.

Compatible With 2007-2014 Chevrolet Silverado 2500 HD and Silverado 3500 HD, 2009-2014 Chevrolet Express 1500 and GMC Savana 1500, 2013-2014 Cadillac Escalade and Escalade ESV, and select 2007-2014 GMC Sierra 2500 HD and Sierra 3500 HD applications. The AL8813X also covers 2013 Chevrolet Avalanche, Suburban 1500, Tahoe, and GMC Yukon/Yukon XL models listed in the fitment data.

Common Charging Problems This Part Can Address

• Battery warning light caused by alternator output loss
• Dim lights or electrical instability at idle
• Slow battery recovery after starting
• Charging-system failure on 125 amp OE-style applications
• Noise or wear related to a failing alternator assembly

Installation Notes and Tips

Verify the vehicle’s original alternator amperage, plug type, pulley style, and belt configuration before installation. This unit is not one-wire capable and uses a rear-view main mounting ear clocking of 6 o’clock, so matching the original mounting and connector layout is important. Confirm whether the vehicle is equipped with a single or dual alternator setup where noted in the fitment data. Fits 2013-2014 Cadillac Escalade, 2013-2014 Chevrolet Tahoe, and 2007-2014 Chevrolet Silverado 2500 HD applications listed for 125 amp alternator service.

Quality Assurance

Built under Bosch Premium Alternators standards, the AL8813X is remanufactured, tested, and packaged for service replacement use. Bosch’s product line focuses on charging components engineered and validated for performance and reliability in OE-style applications.