BBB Industries 42251 Alternator

Reman Alternator for Volkswagen and Audi

BBB Industries REMAN ALTERNATOR 42251 is a remanufactured charging system replacement for select Volkswagen and Audi applications with 150-amp Bosch units. It is built for drivers replacing a worn alternator on vehicles such as the Volkswagen GTI, Audi A3, and Volkswagen Tiguan.

Key Features

• Remanufactured alternator for charging system repair
• 150 amp output for listed applications
• Fits Bosch unit applications noted in the vehicle coverage
• Direct replacement part for select Volkswagen and Audi models
• Part number 42251 for catalog and service lookup

Detailed Description

BBB Industries 42251 is a REMAN ALTERNATOR in the BBB Industries REMAN ALTERNATOR line, covering a wide range of 2015-2021 Volkswagen and Audi vehicles. Fitment includes the 2020-2021 Volkswagen GTI, 2020 Audi A3 and A3 Quattro, 2019-2020 Audi Q3, 2020 Audi S3, 2020 Volkswagen Atlas and Atlas Cross Sport, 2019-2020 Volkswagen Jetta and Tiguan, plus earlier applications such as the 2015-2019 Volkswagen Golf SportWagen, 2015-2018 Volkswagen Golf, and 2015-2017 Volkswagen Golf R. This part number 42251 is also listed for 2017-2019 Audi A3 and A3 Quattro, 2017-2019 Volkswagen Golf Alltrack, and 2016-2018 Volkswagen GTI applications.

This part cross-references Bosch-style OE replacement applications where listed in the fitment notes.

What It Is Used For

• Replacing a failing alternator that no longer maintains proper charging voltage
• Addressing battery warning lights related to charging system output
• Restoring electrical power for vehicle accessories and engine management systems
• Correcting low-charge or intermittent charging conditions on listed Volkswagen and Audi models

Installation Notes and Tips

Verify the vehicle’s original alternator type, amperage rating, and Bosch unit notes before ordering. Confirm model year breakpoints carefully, especially 2020 Audi A3, A3 Quattro, and S3 applications noted as valid only to 01/13/2020. Match the listed 150-amp specification and application notes for the exact vehicle configuration.

Quality Assurance

BBB Industries remanufactured electrical components are processed for service replacement use and cataloged by application to support accurate fitment selection.