Valeo 439762 Alternator

Valeo 439762 Alternator for Mercedes-Benz AMG

The Valeo 439762 alternator is a 12-volt, 180-amp charging unit built for Mercedes-Benz AMG applications that require OE-level electrical performance. As part of the Valeo OE family, this alternator uses an internal fan, internal regulator, and clockwise rotation for direct-fit service on select high-output vehicles.

Valeo has supplied original equipment electrical systems since 1923, and this premium alternator line is built as 100% new replacement hardware. That matters for drivers looking for stable charging output, consistent voltage control, and a replacement that matches the demands of modern Mercedes-Benz AMG electronics.

• 12-volt alternator with 180-amp output
• Internal fan and internal regulator
• Clockwise rotation
• 6-groove pulley for serpentine belt systems
• Aluminium housing for OE-style fit and durability
• Valeo OE family replacement
• Technical number: FGN18S061

Product Details

This Valeo alternator is engineered for vehicles that need dependable charging under higher electrical loads. The 180-amp rating supports the demands of performance-oriented Mercedes-Benz AMG models, while the internal regulator helps maintain charging consistency. The serpentine pulley design and 6-groove configuration align with the factory belt drive layout used on the listed applications. This part number, 439762, also cross-references Gates 42018 for the same application.

Fits 2016-2019 Mercedes-Benz GLE63 AMG, N/A. Fits 2016-2019 Mercedes-Benz GLE63 AMG S, N/A. Fits 2017-2019 Mercedes-Benz GLS63 AMG, N/A. Fits 2013-2019 Mercedes-Benz SL63 AMG, N/A. Fits 2014-2018 Mercedes-Benz CLS63 AMG S, N/A. Fits 2013-2018 Mercedes-Benz G63 AMG, N/A. Fits 2014-2016 Mercedes-Benz E63 AMG S, N/A. Fits 2013-2016 Mercedes-Benz GL63 AMG, N/A. Fits 2012-2015 Mercedes-Benz E63 AMG, N/A. Fits 2012-2015 Mercedes-Benz ML63 AMG, N/A. Fits 2012-2014 Mercedes-Benz CLS63 AMG, N/A.

Common Uses

• Restores charging output when the battery warning light appears
• Addresses low-voltage conditions caused by alternator wear
• Helps correct dim lights or unstable electrical performance
• Supports vehicles with increased accessory and system electrical demand
• Replaces a failed OE-style alternator on Mercedes-Benz AMG models

Installation Notes

Verify pulley groove count, rotation direction, amperage rating, and connector match before installation. Confirm belt alignment with the serpentine drive system and inspect the battery, belt, and charging circuit for related wear before completing the repair. Use the vehicle-specific fitment list to confirm the correct application for your Mercedes-Benz GLE63 AMG, SL63 AMG, or other listed AMG model.

Quality Assurance

Valeo is a long-standing OE supplier in electrical systems, and this alternator is part of the Valeo OE line built as a 100% new replacement. The design reflects factory-style charging requirements for the listed Mercedes-Benz AMG applications, including the 439762 part number.