Bosch AL2399X Alternator

Bosch Remanufactured Alternator for Infiniti and Nissan

The Bosch AL2399X remanufactured alternator is built for 12-volt charging systems that need stable output and dependable electrical performance. It is a direct-fit replacement for select Infiniti and Nissan applications, including the Infiniti FX35, G35, QX4, and Nissan 350Z and Pathfinder.

Bosch Premium Alternators are remanufactured, tested, and configured to deliver consistent charging performance with the correct pulley, internal fan, and internal regulator setup for the listed applications. The AL2399X is a practical OE-style replacement for drivers addressing charging-system faults on Infiniti G35 and Nissan 350Z models.

Key Features

• Remanufactured Bosch alternator for 12-volt charging systems
• 110 amp amperage rating for factory-style electrical output
• Internal fan and internal regulator design
• Clockwise rotation
• 6-groove pulley included with 60 mm outside diameter
• Aluminum case and aluminum case material
• Plug type 300 with rear-view plug clock at 6 o’clock
• External fan included and external regulator included
• Direct replacement part number AL2399X

Detailed Description

Bosch AL2399X is a remanufactured alternator engineered for select Infiniti and Nissan vehicles that use a 12-volt, 110-amp charging system. It features an internal regulator, internal fan, clockwise rotation, and a 6S pulley configuration to match the listed OE-style application requirements. The aluminum housing helps keep the unit lightweight while maintaining the fit and layout expected in the engine bay.

This alternator is listed for 2003-2008 Infiniti FX35, 2003-2007 Infiniti G35, 2003-2006 Nissan 350Z, 2003-2004 Nissan Pathfinder, 2003 Infiniti QX4, and 2002 Infiniti QX4 with Mitsubishi unit. If you are searching for a Bosch AL2399X alternator for Infiniti G35 or a remanufactured alternator for Nissan 350Z charging issues, this part matches the specified applications. This part cross-references Mitsubishi OE applications where listed by the vehicle fitment data.

Common Problems This Part Can Address

• Battery warning light caused by alternator output loss
• Low charging voltage at the battery
• Dim lights or electrical instability while driving
• Battery drain after the engine is running
• Charging-system failure on listed Infiniti and Nissan models

Installation Notes and Tips

Verify the plug type, pulley groove count, rotation direction, and mounting-ear clock position before installation. Confirm the vehicle’s original alternator configuration against the fitment data, especially on the 2002 Infiniti QX4 with Mitsubishi unit note. Inspect the belt condition, battery state, and charging connections during replacement to help ensure proper system operation after installation.

Quality Assurance

Bosch Premium Alternators are remanufactured, built, and tested to meet performance and reliability expectations for charging-system replacement. The AL2399X is a Bosch remanufactured alternator designed for consistent fit and electrical output in the listed Infiniti and Nissan applications.