Bosch AL9403X Alternator

Bosch AL9403X Remanufactured Alternator

The Bosch AL9403X is a remanufactured 12-volt alternator built for charging-system performance and dependable electrical output. It is engineered for select Jaguar S-Type applications, including 2000-2001 models and 2002 vehicles up to chassis #M45254.

Bosch Premium Alternators are part of a product line focused on rebuilt charging components that are tested for consistent operation and reliability. This remanufactured alternator is a direct-fit electrical replacement for vehicles that need stable battery charging and proper system voltage.

Key Features

• Remanufactured Bosch alternator for charging-system service
• 12-volt design with 120-amp amperage rating
• Internal fan and internal regulator configuration
• Clockwise rotation direction
• Includes pulley and external fan
• 6-groove pulley with 51 mm outside diameter
• Aluminum case and aluminum case material
• Plug type 917 with rear-view plug clock position at 8 o’clock
• Not one-wire capable

Detailed Description

Bosch AL9403X alternator is built for Jaguar S-Type charging-system replacement where correct voltage regulation and belt-drive fitment matter. The remanufactured construction supports OE-style electrical service, while the 120-amp output helps maintain battery charge and vehicle electrical demand under normal driving conditions. If you are searching for a Bosch alternator for Jaguar S-Type 2000-2002 applications, AL9403X is the part number to reference.

This part cross-references XR86934 for the same application. The Bosch AL9403X also matches key physical details including a 6-groove pulley, clockwise rotation, internal fan design, and internal regulator layout. For buyers comparing Bosch AL9403X alternator specs, these details help confirm the correct charging component before installation.

What It Helps Address

• Battery warning light caused by alternator output loss
• Low charging voltage during driving
• Dim lights or unstable electrical performance
• Charging-system failure from worn internal alternator components
• Belt-drive replacement needs on select Jaguar S-Type models

Installation Notes and Tips

Verify plug type, pulley configuration, rotation direction, and mounting-ear orientation before installation. This alternator uses a rear-view main mounting ear position at 6 o’clock and is not one-wire capable. Confirm vehicle fitment carefully for 2000-2001 Jaguar S-Type and 2002 Jaguar S-Type models up to chassis #M45254.

For best results, inspect the battery, belt condition, and charging connections before replacing the alternator. Matching the electrical connector and pulley style to the original unit helps ensure proper installation and charging performance.

Quality Assurance

Bosch remanufactured alternators are built, tested, and verified to support reliable charging-system operation. The AL9403X reflects Bosch’s focus on consistent electrical performance and fitment accuracy for select Jaguar S-Type applications.