Bosch AL9402X Alternator

Bosch AL9402X Remanufactured Alternator

The Bosch AL9402X is a remanufactured 12-volt alternator built for charging-system replacement on select Jaguar applications. It features a 120-amp rating, internal fan design, internal regulator, and aluminum case construction for a direct-fit electrical repair.

Bosch Premium Alternators are part of a product line focused on performance and reliability through controlled remanufacturing, testing, and build consistency. For Jaguar XJ8, XJR, Vanden Plas, XK8, and XKR applications, this alternator supports stable battery charging and dependable electrical output.

Key Features

• 12-volt remanufactured alternator
• 120-amp amperage rating
• Internal fan and internal regulator
• Aluminum case and aluminum case color
• Clockwise rotation direction
• External fan included
• External regulator included
• Plug type 318 with rear-view plug clock at 6 o’clock
• 7S pulley/belt type configuration
• Part number AL9402X

Detailed Description

The Bosch AL9402X alternator is engineered for charging-system service on 1997-2003 Jaguar XK8, 2000-2002 Jaguar XKR, and 1998-2003 Jaguar Vanden Plas, XJ8, and XJR applications, with 2003 XK8 and XKR coverage limited to chassis number A30644 and earlier. This remanufactured unit is built with a 12-volt electrical system, internal fan design, and internal regulator layout, and it uses an aluminum housing for durable fitment in the engine bay. If you are replacing a failing Jaguar alternator, AL9402X provides the correct electrical architecture for the listed vehicles.

This part cross-references LNC1800AA for the same application.

What This Alternator Helps Address

• Battery warning light caused by low charging output
• Dim headlights or unstable electrical performance
• Battery drain from a worn charging unit
• Charging-system noise or inconsistent voltage output
• Starting issues related to alternator failure

Installation Notes and Tips

Verify plug type 318, rear plug orientation, clockwise rotation, and the 7S belt configuration before installation. Confirm vehicle coverage by model year and, for 2003 XK8 and XKR, chassis number A30644 or earlier. Inspect the charging circuit, belt condition, and battery state before replacing the alternator to avoid repeat failures.

Quality Assurance

Bosch remanufactured alternators are built and tested to meet charging-system performance and reliability expectations for the listed Jaguar applications. The AL9402X is packaged in a box and supplied as a remanufactured replacement unit.