Dim lights and dying batteries under diesel electrical load mean the alternator is due. The Bosch AL8785X remanufactured alternator covers LB7/LLY Duramax 2003-2005.

Verify amperage rating against your OE unit before install.

What you get

• Bosch AL8785X alternator
• Remanufactured by Bosch
• Fitment: LB7/LLY Duramax 2003-2005
• Refundable core charge applies — returned when your old part is sent back per our core terms

Specs

• Part number: AL8785X
• Type: alternator
• Condition: Remanufactured
• Manufacturer: Bosch

Choose this when you want a genuine Bosch replacement matched to the OE number on your truck. A refundable core charge is added at checkout and refunded when your old part is returned per our core terms. Verify fitment for your truck before ordering.