Bosch AL3381X Alternator

Bosch Remanufactured Alternator for Lexus

The Bosch AL3381X remanufactured alternator is built for 12-volt charging systems that need stable output and dependable electrical performance. With a 150-amp rating, internal regulator, internal fan, and included pulley, it is a direct-fit charging component for select Lexus ES350 and RX350 applications.

Bosch Premium Alternators are remanufactured, tested, and built to deliver consistent performance and reliability for everyday driving and demanding electrical loads.

Key Features

• 12-volt remanufactured alternator with 150-amp output
• Internal regulator and internal fan design
• Clockwise rotation
• Includes pulley with 7-groove belt profile
• Aluminum case and aluminum case material for OE-style fitment
• Part number AL3381X for easy identification
• Cross-reference: 270600P340, 2706031331

Detailed Description

This Bosch alternator is engineered for select Lexus charging systems that require a 150-amp unit with a 7S-DP pulley type and rear plug clock position at 4 o’clock from the main mounting ear. It is a remanufactured alternator designed to restore charging performance in vehicles such as the Lexus ES350 and Lexus RX350, including Japan-built and non-Japan-built configurations where specified. If you are searching for a remanufactured alternator for Lexus ES350 2012-2018 or Lexus RX350 2012-2015, AL3381X is the correct part number to verify against your original unit.

What It Helps Solve

• Battery warning lights caused by weak charging output
• Low-voltage conditions affecting lights, accessories, and electronics
• Charging system noise or inconsistent alternator performance
• Electrical strain from a failing alternator in Lexus ES350 and RX350 models
• Replacement needs for a remanufactured 150-amp alternator with the correct pulley and plug configuration

Installation Notes and Tips

Verify the original alternator’s amperage rating, pulley groove count, rotation direction, and rear plug orientation before installation. Confirm vehicle build details for Lexus ES350 and RX350 applications, especially Japan-built versus non-Japan-built fitment and the RX350 production note from 03/2012. Compare the existing unit to Bosch AL3381X and the listed cross-reference numbers before replacing the charging system component.

Quality Assurance

Bosch Premium Alternators are remanufactured, built, and tested to support consistent charging performance and reliability. This AL3381X alternator is a Bosch remanufactured replacement for select Lexus applications.