Valeo 443271 Alternator

Valeo 443271 Alternator Overview

The Valeo 443271 alternator is a 14-volt, 200-amp charging unit built for Mercedes-Benz applications that require stable electrical output and OE-style fitment. It uses an internal fan, internal regulator, clockwise rotation, and a 6-groove serpentine pulley for direct replacement service.

Valeo’s Alternator line draws on the brand’s long history in electrical systems and original equipment supply. This premium alternator is 100% new and uses an aluminum housing for durable, lightweight construction. The Valeo 443271 is a practical choice for Mercedes-Benz Metris and Mercedes-Benz C300/C350e charging system service.

Key Features

• 14-volt alternator with 200-amp output
• Internal fan and internal voltage regulator
• Clockwise rotation with 6-groove serpentine pulley
• Aluminum housing for corrosion-resistant construction
• 100% new replacement unit
• Technical number: FGN20S048AMQ

Fitment Details

• Fits 2021-2023 Mercedes-Benz Metris, N/A, 200 AMP; Alternator
• Fits 2016-2020 Mercedes-Benz Metris, N/A, Alternator
• Fits 2016-2018 Mercedes-Benz C350e, N/A, 200 AMP; Alternator
• Fits 2017 Mercedes-Benz C300, N/A, To 05/04/16; Alternator
• Fits 2015-2017 Mercedes-Benz C300, N/A, Alternator

Detailed Description

Built for charging-system replacement on select Mercedes-Benz models, the Valeo 443271 alternator supports consistent electrical performance with a 14V design and 200-amp rating. The internal regulator and internal fan simplify the unit’s design, while the clockwise rotation and serpentine belt pulley configuration match the specified OE application. If you are replacing a Mercedes-Benz Metris alternator or servicing a Mercedes-Benz C300 alternator application, this part number provides a direct-fit solution for the listed vehicles.

This part cross-references Anchor 10304 and Four Seasons 20571 for the same application.

Common Issues This Part Can Address

• Low charging output from a worn alternator
• Battery warning light caused by charging system failure
• Dim lights or unstable electrical performance
• Noise or bearing wear from an aging alternator assembly
• Charging problems on Mercedes-Benz Metris, C300, or C350e applications

Installation Notes and Tips

Verify pulley groove count, rotation direction, amperage rating, and connector style against the original unit before installation. Confirm the vehicle’s model year and engine-specific application details for Mercedes-Benz Metris, Mercedes-Benz C300, and Mercedes-Benz C350e fitment. Inspect the serpentine belt, tensioner, and charging circuit condition during replacement to help prevent repeat failures.

Quality Assurance

Valeo is a recognized OE supplier in electrical systems, and this alternator line is built as a 100% new replacement rather than a remanufactured unit. The design reflects Valeo’s original equipment experience and focus on stable charging performance for modern vehicle electrical demands.