Bosch AL8785N Alternator
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Bosch
 Alternator (New)

Bosch AL8785N Alternator

Brand Bosch AL8785N
Voltage 14
Plug Clock Rear View Main Mounting Ear at 6 O Clock 12
Fan Type Internal
Ground Type Negative
Mounting Configuration Code Short
Rotation Direction Clockwise (right)
One Wire Capable No
Pulley Included No
External Regulator Included Yes
Pulley Groove Quantity 6
Outside Pulley Diameter 56.5
Regulator Type Internal
Decoupled Or Clutch Pulley No
AC Service Tap No
Amperage Rating 105
Mounting Type Single pivoted lever
Brushless No
Automotive Item Weight (lbs) 11.728592 lb
New Or Remanufactured New
Product Length 6.929134 in
Pulley Type / Belt Type (Alternator) 6s
Product line Alternator (New)
Fits Cadillac, Chevrolet, and GMC · 59 vehicles

New replacement unit. Built as a new alternator for charging-system service.

14-volt output. 105-amp electrical rating for stable system charging.

Internal regulation. Includes an internal regulator and internal fan design.

Cross-references 10464481 for the same application. See all 1.

$201.86Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Alternator options

Alternator for GM truck and SUV applications

This Bosch new alternator is built for charging-system replacement on a wide range of Chevrolet, GMC, and Cadillac applications. It is a 14-volt unit with a 105-amp rating, internal fan, and internal regulator for direct electrical system support.

  • New alternator for charging-system service
  • 14-volt, 105-amp output
  • Internal fan and internal regulator
  • Clockwise rotation with 6-groove pulley design
  • Negative ground configuration

Fitment and application details

Compatible With 2002-2004 Chevrolet Silverado 1500, N/A; 2003-2004 Chevrolet Silverado 2500, N/A; 2003-2005 Chevrolet Silverado 2500 HD, N/A; 2003-2005 Chevrolet Silverado 3500, N/A; 2002-2004 GMC Sierra 1500, N/A; 2003-2004 GMC Sierra 2500, N/A; 2003-2005 GMC Sierra 2500 HD, N/A; 2003-2005 GMC Sierra 3500, N/A; 2003-2004 Chevrolet Tahoe, N/A; 2003-2004 GMC Yukon, N/A; 2003-2004 Cadillac Escalade, N/A; and additional Chevrolet, GMC, and Cadillac applications listed in fitment.

Part number AL8785N is also cross-referenced to 10464481 for the same application.

For Chevrolet Silverado 1500, GMC Sierra 1500, and related GM truck platforms, this alternator matches the listed mounting configuration, pulley setup, and electrical specifications. The short mounting configuration, single pivoted lever mount, and 6S pulley type help align the unit with the original charging-system layout. AL8785N is a practical replacement choice when the original alternator no longer maintains proper system voltage.

What this part is used for

  • Restoring battery charging after alternator failure
  • Correcting low-voltage or charging warning conditions
  • Replacing a worn or noisy alternator assembly
  • Addressing belt-drive or pulley mismatch concerns
  • Supporting stable electrical output in GM truck and SUV platforms

Installation notes and quality assurance

Verify pulley groove count, rotation direction, mounting style, and electrical connector orientation before installation. Confirm the vehicle uses the listed 14-volt, internal-regulator configuration and the specified mounting code. Bosch Premium Alternators are designed, built, and tested for performance and reliability. Part number AL8785N identifies this new Bosch alternator for the listed applications.

Related reading

This part fits 59 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2005ChevroletSilverado 2500 HD6.6LV8—Alternator (New)
2005ChevroletSilverado 35006.6LV8—Alternator (New)
2005GMCSavana 25006.0LV8CNGAlternator (New)
2005GMCSierra 2500 HD6.6LV8—Alternator (New)
2005GMCSierra 35006.6LV8—Alternator (New)
2004CadillacEscalade5.3LV8—Alternator (New)
2004CadillacEscalade ESV6.0LV8—Alternator (New)
2004CadillacEscalade EXT6.0LV8—Alternator (New)
2004ChevroletAvalanche 15005.3LV8—Alternator (New)
2004ChevroletAvalanche 25008.1LV8—Alternator (New)
2004ChevroletExpress 15005.3LV8—Alternator (New)
2004ChevroletExpress 25005.3LV8—Alternator (New)
2004ChevroletExpress 35006.0LV8—Alternator (New)
2004ChevroletSilverado 15005.3LV8GASAlternator (New)
2004ChevroletSilverado 25006.0LV8—Alternator (New)
2004ChevroletSilverado 2500 HD6.6LV8—Alternator (New)
2004ChevroletSilverado 35006.6LV8—Alternator (New)
2004ChevroletSuburban 15005.3LV8—Alternator (New)
2004ChevroletSuburban 25006.0LV8—Alternator (New)
2004ChevroletTahoe5.3LV8—Alternator (New)
2004GMCSavana 15005.3LV8—Alternator (New)
2004GMCSavana 25005.3LV8—Alternator (New)
2004GMCSavana 35006.0LV8—Alternator (New)
2004GMCSierra 15005.3LV8—Alternator (New)
2004GMCSierra 25006.0LV8—Alternator (New)
2004GMCSierra 2500 HD6.6LV8—Alternator (New)
2004GMCSierra 35006.6LV8—Alternator (New)
2004GMCYukon5.3LV8—Alternator (New)
2004GMCYukon XL 15005.3LV8—Alternator (New)
2004GMCYukon XL 25006.0LV8—Alternator (New)
2003CadillacEscalade5.3LV8—Alternator (New)
2003CadillacEscalade ESV6.0LV8—Alternator (New)
2003CadillacEscalade EXT6.0LV8—Alternator (New)
2003ChevroletAvalanche 15005.3LV8—Alternator (New)
2003ChevroletAvalanche 25008.1LV8—Alternator (New)
2003ChevroletExpress 15005.3LV8—Alternator (New)
2003ChevroletExpress 25005.3LV8—Alternator (New)
2003ChevroletExpress 35006.0LV8—Alternator (New)
2003ChevroletSilverado 15005.3LV8—Alternator (New)
2003ChevroletSilverado 1500 HD6.0LV8—Alternator (New)
2003ChevroletSilverado 25006.0LV8—Alternator (New)
2003ChevroletSilverado 2500 HD6.6LV8—Alternator (New)
2003ChevroletSilverado 35006.6LV8—Alternator (New)
2003ChevroletSuburban 15005.3LV8—Alternator (New)
2003ChevroletSuburban 25006.0LV8—Alternator (New)
2003ChevroletTahoe5.3LV8—Alternator (New)
2003GMCSavana 15005.3LV8—Alternator (New)
2003GMCSavana 25005.3LV8—Alternator (New)
2003GMCSavana 35006.0LV8—Alternator (New)
2003GMCSierra 15005.3LV8—Alternator (New)
2003GMCSierra 1500 HD6.0LV8—Alternator (New)
2003GMCSierra 25006.0LV8—Alternator (New)
2003GMCSierra 2500 HD6.6LV8—Alternator (New)
2003GMCSierra 35006.6LV8—Alternator (New)
2003GMCYukon5.3LV8—Alternator (New)
2003GMCYukon XL 15005.3LV8—Alternator (New)
2003GMCYukon XL 25006.0LV8—Alternator (New)
2002ChevroletSilverado 15005.3LV8FLEXAlternator (New)
2002GMCSierra 15005.3LV8—Alternator (New)
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
10464481