Valeo 439951 Alternator

Valeo 439951 Alternator Overview

The Valeo 439951 alternator is a 12-volt charging system component built for select Audi applications that require a 180-amp output. As a Valeo OE family alternator, it uses an internal fan, internal regulator, clockwise rotation, and an aluminum housing to support stable electrical performance in demanding driving conditions.

Designed for Audi A6 Quattro and Audi A7 Quattro models, this alternator matches OE-style specifications for direct replacement service. Valeo’s long history in electrical systems and original equipment supply is reflected in this premium, 100% new alternator design.

Key Features

• 12-volt alternator with 180-amp amperage rating
• Internal fan and internal regulator for integrated control
• Clockwise rotation direction
• Aluminum housing for durable construction
• Single-groove pulley configuration
• Valeo OE family replacement for select Audi charging systems
• Part number 439951 for accurate ordering and service matching

Detailed Product Description

Valeo 439951 is an alternator engineered for vehicles that depend on consistent charging output and OE-level fitment. It is listed for 2016, 2017, and 2018 Audi A6 Quattro and Audi A7 Quattro applications, including 2016 models built to 08/15/16 and 2018 vehicles with the OE supplier specification noted in the fitment data. This part cross-references Audi OE numbers 06E903024H and 06E903024M for the same application.

As part of the Valeo OE line, this alternator reflects the brand’s original equipment focus and its emphasis on voltage stability and charging efficiency. The 439951 alternator is a direct-fit service part for Audi A6 Quattro alternator replacement and Audi A7 Quattro alternator replacement where the OE configuration calls for a 180-amp unit.

What This Alternator Helps Address

• Battery warning lights caused by charging system output loss
• Low-voltage conditions affecting electrical accessories and modules
• Weak battery charging during normal driving
• Alternator noise or failure tied to worn internal components
• Charging performance issues on Audi A6 Quattro and Audi A7 Quattro models

Installation Notes and Tips

Verify the vehicle’s OE alternator specification before installation, including amperage rating, rotation direction, pulley groove count, and regulator type. Confirm the application against the part number 439951 and the vehicle’s build date where noted, especially for 2016 Audi A6 Quattro and Audi A7 Quattro models built to 08/15/16. Inspect the charging system, battery condition, and related wiring before completing the repair.

Quality Assurance

Valeo has supplied original equipment electrical components since 1923 and is recognized as a global OE alternator supplier. This premium alternator is 100% new, which helps reduce the risk associated with remanufactured units and supports dependable replacement service for Audi charging system repairs.