Valeo 439393 Alternator

Valeo 439393 Alternator Overview

The Valeo 439393 alternator is a 12-volt charging system component built for select Volkswagen and Audi applications. It features an internal fan, internal regulator, clockwise rotation, a 6-groove pulley, and a lightweight aluminum housing for direct-fit replacement use.

Valeo’s Alternator line draws on the brand’s long history in electrical systems and OE supply. This premium alternator is supplied as a 100% new unit, helping reduce the risk associated with remanufactured components and supporting stable charging performance in daily driving.

Key Features

• Part number: 439393
• 12-volt alternator with 140-amp output
• Internal fan and internal voltage regulator
• Clockwise rotation with 6-groove pulley
• Aluminum housing for durable construction
• Technical number: SG14B022
• Fits Volkswagen Jetta, Tiguan, Passat, Beetle, CC, Eos, and GTI applications
• Fits Audi A3, A3 Quattro, A4, A4 Quattro, TT, and TT Quattro applications

Detailed Description

Valeo 439393 is an OE-style alternator for vehicles that require the SG14B022 configuration. It is engineered for 12-volt charging systems and 140-amp output, making it a direct replacement choice for many Volkswagen Jetta and Tiguan models as well as Audi A3 and A4 applications. The internal regulator and internal fan support compact packaging and simplified electrical integration, while the aluminum housing helps keep weight down without sacrificing strength.

This part cross-references Bosch 15083 and Remy 12855 for the same application. If you are replacing a worn alternator on a Volkswagen Passat, Volkswagen Beetle, or Audi TT Quattro, the Valeo 439393 offers a fitment-specific solution built around the original technical number. The part number 439393 is also useful when verifying interchange against OE and aftermarket listings.

What It Helps Fix

• Battery warning light caused by charging system failure
• Low system voltage during idle or accessory use
• Dim headlights and unstable electrical output
• Dead battery conditions related to alternator underperformance
• Charging issues on Volkswagen and Audi vehicles with SG14B022 fitment

Installation Notes and Tips

Confirm the vehicle’s alternator specification, pulley groove count, rotation direction, and technical number before installation. This Valeo 439393 alternator is listed for specific Volkswagen and Audi models, including 2007-2018 Volkswagen Jetta, 2009-2017 Volkswagen Tiguan, 2014-2017 Volkswagen Passat, 2009-2013 Audi A3, and 2007-2009 Audi A4. Verify belt alignment and electrical connector match to the original unit before final assembly.

Quality Assurance

Valeo is a recognized OE supplier in electrical systems, and this alternator is a new unit rather than a remanufactured part. That construction approach supports consistent charging performance and reduces the risk of early failure associated with reused internal components.