Bosch AL4118X Alternator

Bosch Remanufactured Alternator for Hyundai and Kia

Bosch AL4118X is a remanufactured 12-volt alternator built for charging-system replacement on select Hyundai and Kia vehicles. It features a 150-amp output, internal voltage regulation, an internal fan, and a clockwise rotation design with a 6-groove pulley already included.

Bosch Premium Alternators are remanufactured, tested, and built to deliver consistent electrical performance and dependable operation. This Bosch alternator is a direct-fit replacement for applications that use a Denso OE-style design.

Key Features

• 12-volt remanufactured alternator
• 150-amp amperage rating for charging-system output
• Internal regulator and internal fan
• Clockwise rotation
• 6-groove pulley included
• Aluminum case and aluminum case material
• 54 mm outside pulley diameter
• OE reference: Denso
• Part number: AL4118X

Detailed Description

Bosch AL4118X is engineered as a remanufactured alternator for vehicles that require a 12V charging unit with a 6S pulley profile and internal regulation. The aluminum housing helps keep the unit lightweight while maintaining the OE-style form factor needed for proper mounting and belt alignment. This alternator is a strong match for drivers searching for a Hyundai Santa Fe alternator, Kia Sorento alternator, or Kia Optima alternator replacement with the correct electrical and pulley specifications.

Compatible vehicle coverage includes 2015-2020 Kia Sorento, 2016-2020 Kia Optima, 2017-2022 Kia Sportage, 2015-2019 Hyundai Sonata, 2017-2018 Hyundai Santa Fe Sport, and 2019-2020 Hyundai Santa Fe. The Bosch AL4118X part number is also useful when cross-checking OE-style charging system replacements for these applications.

This part cross-references Denso 373002G061 for the same application.

What It Helps Address

• Battery warning light caused by alternator output loss
• Low charging voltage during driving
• Dim lights or electrical instability
• Battery drain from a failing charging system
• Noise or belt-drive issues related to alternator wear

Installation Notes and Tips

Verify pulley groove count, rotation direction, plug orientation, and mounting-ear position before installation. This unit uses a rear-view plug clock position with the main mounting ear at 6 o’clock, so connector and bracket alignment should be checked against the original alternator. Confirm belt routing and electrical connections match the vehicle’s OE configuration before starting the engine.

Quality Assurance

Bosch remanufactured alternators are built and tested to meet performance and reliability expectations for charging-system service. Bosch AL4118X is a remanufactured replacement designed around OE-style specifications for consistent fit and function.