Bosch AL8903N Alternator

Bosch AL8903N Alternator for Saturn Astra

The Bosch AL8903N is a new 14-volt alternator built for dependable charging performance in the 2008 Saturn Astra. It is a direct-fit electrical replacement for drivers looking for a Bosch Premium Alternator with OE-style specifications and tested reliability.

Bosch Premium Alternators are engineered, assembled, and validated to deliver consistent output and dependable operation in everyday driving conditions.

Key Features

• Fits 2008 Saturn Astra, N/A
• Part number AL8903N for accurate ordering and catalog matching
• 120-amp amperage rating with 14-volt output
• Internal fan design and internal voltage regulator
• Negative ground configuration
• Clockwise rotation
• Single pivoted lever mounting with short mounting configuration
• 5-groove pulley type / belt type 5S
• Aluminum case with silver finish
• External regulator included

Detailed Description

This Bosch alternator is built for the 2008 Saturn Astra and is identified by part number AL8903N. It features a 120-amp output, internal fan, internal regulator, and negative ground design, along with a clockwise rotation and 5-groove pulley interface. The compact short-case layout and single pivoted lever mounting help match the original charging system configuration for the Saturn Astra.

As part of Bosch’s Alternator (New) line, this unit is positioned as a premium replacement for charging-system service where stable voltage delivery matters. If you are searching for a Bosch AL8903N alternator for 2008 Saturn Astra charging repair, this listing provides the core specifications needed for a direct application match. This part cross-references 93190829 for the same application.

Common Uses

• Restores charging output when the battery is not staying charged
• Addresses dim lights or electrical instability caused by alternator wear
• Replaces a noisy, failing, or inconsistent charging unit
• Helps correct warning lights related to the charging system
• Supports proper electrical performance in a 2008 Saturn Astra

Installation Notes and Tips

Verify pulley style, rotation direction, mounting configuration, and electrical connector layout before installation. Confirm the vehicle uses the listed 2008 Saturn Astra application and compare the original unit to Bosch AL8903N before removal. Inspect the belt, tensioner, and charging cables during service to help ensure proper system operation after replacement.

Quality Assurance

Bosch Premium Alternators are designed, built, and tested for performance and reliability. The AL8903N is a new alternator, not remanufactured, and is manufactured to meet the demands of routine charging-system replacement service.