Bosch AL8785X Alternator

Bosch Remanufactured Alternator AL8785X

The Bosch AL8785X remanufactured alternator is built for 12-volt charging systems that need stable output and OE-style fitment. With a 105 amp rating, internal regulation, and a clockwise rotation, it is a direct replacement choice for a range of Chevrolet, GMC, and Cadillac trucks and SUVs from 2002-2005.

Bosch Premium Alternators are remanufactured, tested, and configured to deliver dependable charging performance for daily driving and demanding electrical loads. The AL8785X includes a pulley, external fan, and external regulator, and uses a 6-groove 6S pulley setup with a 57 mm outside pulley diameter.

Key Features

• Remanufactured Bosch alternator for 12-volt charging systems
• 105 amp amperage rating for OE-style electrical output
• Internal fan design with clockwise rotation
• Internal regulator type with external regulator included
• Pulley included with 6-groove, 6S belt type configuration
• Aluminum case and aluminum case color for OE-style construction
• Plug type 314 with rear-view plug clock position at 6 o’clock
• Cross-reference part number: 10464481

Detailed Description

Bosch AL8785X is a remanufactured alternator engineered for vehicles that require a 105 amp charging unit with the correct mounting, plug, and pulley configuration. It is listed for applications such as the Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500, GMC Sierra 1500, Sierra 2500 HD, Sierra 3500, and Cadillac Escalade models from the 2002-2005 range, along with additional Chevrolet and GMC vans and SUVs in the same platform family. If you are replacing a failing alternator on a Chevrolet Silverado 2500 HD or GMC Sierra 2500 HD, this Bosch AL8785X provides the specified fitment and electrical rating for those applications.

The Bosch Premium Alternator line focuses on remanufactured units that are built, tested, and verified for performance and reliability. This AL8785X uses an aluminum housing, internal fan design, and internal regulator architecture, while also including the external regulator component noted in the product data. The result is a replacement alternator designed around the original charging-system requirements of the listed GM trucks and SUVs.

What It Helps Fix

• Battery warning light caused by alternator charging failure
• Low system voltage in Chevrolet Silverado and GMC Sierra applications
• Dim headlights or unstable electrical performance
• Dead battery conditions related to insufficient charging output
• Charging-system noise or inconsistent alternator operation

Installation Notes and Tips

Verify the vehicle’s existing alternator rating, plug style, pulley groove count, and rotation direction before installation. This part is listed for vehicles with a 105 amp alternator specification, and fitment notes vary by model and production configuration, including Standard and Second Production applications on select 2002-2005 Chevrolet Silverado 1500 and GMC Sierra 1500 models. Confirm the rear-view plug clock position, 314 plug type, and 6-groove pulley arrangement against the original unit before replacing the alternator.

Fits 2003-2005 Chevrolet Silverado 2500 HD, N/A; Fits 2005 Chevrolet Silverado 2500 HD, N/A; Fits 2003-2005 Chevrolet Silverado 3500, N/A; Fits 2003-2005 GMC Savana 2500, N/A; Fits 2003-2005 GMC Sierra 2500 HD, N/A; Fits 2003-2005 GMC Sierra 3500, N/A; Fits 2003-2005 GMC Yukon XL 2500, N/A; Fits 2003-2004 Cadillac Escalade, N/A; Fits 2003-2004 Cadillac Escalade ESV, N/A; Fits 2003-2004 Cadillac Escalade EXT, N/A; Fits 2003-2004 Chevrolet Avalanche 1500, N/A; Fits 2003-2004 Chevrolet Avalanche 2500, N/A; Fits 2003-2004 Chevrolet Express 1500, N/A; Fits 2003-2004 Chevrolet Express 2500, N/A; Fits 2003-2004 Chevrolet Express 3500, N/A; Fits 2003-2004 Chevrolet Silverado 1500, N/A; Fits 2004 Chevrolet Silverado 1500, N/A; Fits 2003-2004 Chevrolet Silverado 2500, N/A; Fits 2003-2004 Chevrolet Suburban 1500, N/A; Fits 2003-2004 Chevrolet Suburban 2500, N/A; Fits 2003-2004 Chevrolet Tahoe, N/A; Fits 2003-2004 GMC Savana 1500, N/A; Fits 2003-2004 GMC Savana 3500, N/A; Fits 2003-2004 GMC Sierra 1500, N/A; Fits 2003-2004 GMC Sierra 2500, N/A; Fits 2003-2004 GMC Yukon, N/A; Fits 2003-2004 GMC Yukon XL 1500, N/A; Fits 2003 Chevrolet Silverado 1500 HD, N/A; Fits 2003 GMC Sierra 1500 HD, N/A; Fits 2002 Chevrolet Silverado 1500, N/A; Fits 2002 GMC Sierra 1500, N/A.

Quality Assurance

Bosch remanufactured alternators are built, inspected, and tested to meet the performance and reliability expectations associated with the Bosch Premium Alternators line. The AL8785X is packaged in a box and supplied as a remanufactured electrical replacement for the listed GM applications.