Bosch AL4050X Alternator

Bosch Remanufactured Alternator AL4050X

The Bosch AL4050X is a remanufactured 12-volt alternator built for charging-system performance and dependable electrical output. It is engineered for select Hyundai Santa Fe, Hyundai XG350, Hyundai XG300, and Kia Amanti applications with 120-amp output.

Key Features

• Remanufactured Bosch alternator for 12-volt charging systems
• 120-amp amperage rating for specified vehicle applications
• Internal fan design with clockwise rotation
• Internal regulator configuration with external regulator included
• 6-groove pulley with pulley included
• Aluminum case and aluminum case material for OE-style fitment
• Plug type 307 with rear-view plug clock position at 6 o’clock

Product Details

Bosch Premium Alternators are built and tested to deliver consistent charging performance and reliability. This remanufactured alternator follows the original application requirements for select Hyundai and Kia vehicles, including 2003-2006 Hyundai Santa Fe, 2004-2006 Kia Amanti, 2002-2005 Hyundai XG350, and 2001 Hyundai XG300. The AL4050X part number is also a useful reference when matching the correct charging component for these vehicles.

This part cross-references 3730039405 for the same application.

Common Charging System Symptoms

• Battery warning light or charging indicator stays on
• Low charging voltage or intermittent electrical output
• Dim headlights or fluctuating interior lighting
• Battery repeatedly discharging after normal driving
• Accessory and electrical system performance issues tied to alternator output

Installation Notes

Verify the vehicle’s original alternator specifications before installation, including 120-amp output, pulley groove count, plug type, and mounting orientation. Confirm belt alignment and connector fitment on the Hyundai Santa Fe, Hyundai XG350, Hyundai XG300, or Kia Amanti before final assembly. Inspect the charging circuit, battery condition, and related wiring so the replacement alternator can operate within the correct system parameters.

Quality Assurance

Bosch remanufactured alternators are designed, built, and tested to meet charging-system performance and reliability requirements for the listed applications.