Valeo 443272 Alternator

Valeo 443272 Alternator for Mercedes-Benz

Valeo 443272 is a 14-volt alternator built for Mercedes-Benz charging systems that require stable output and OE-style fitment. With a 180-amp rating, internal fan, internal regulator, and clockwise rotation, it supports dependable electrical performance across a wide range of Mercedes-Benz E350, E550, S550, and related applications.

Key Features

• 14-volt alternator with 180-amp output
• Internal fan and internal voltage regulator
• Clockwise rotation with 1-groove pulley
• Aluminium housing for OE-style construction
• 100% new unit from Valeo’s alternator line
• Technical number: FGN18S179

Product Details

Valeo’s Alternator line reflects the brand’s long history in electrical systems and original equipment supply. This Valeo 443272 alternator is engineered as a new replacement unit, not a remanufactured part, which helps reduce the risk associated with worn internal components. It is built for Mercedes-Benz charging system service where correct voltage regulation, pulley configuration, and amperage output are critical. This part cross-references Bosch (e.g., 15710, AL0844N) for the same application.

Compatible Mercedes-Benz applications include G550, SL550, CLS550, E350, E550, S550, CL550, ML350, CLK550, GL450, GL550, ML550, R350, C300, and related models listed below. The part number 443272 and technical number FGN18S179 are important identifiers when matching the correct alternator for your vehicle.

Vehicle Fitment

• Fits 2009-2015 Mercedes-Benz G550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2011-2012 Mercedes-Benz SL550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007-2009 Mercedes-Benz SL550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007-2011 Mercedes-Benz CLS550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2006-2011 Mercedes-Benz E350, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007-2011 Mercedes-Benz E550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007-2011 Mercedes-Benz S550, N/A; Except High Capacity; Tech # FGN18S179; 180 AMP
• Fits 2007-2011 Mercedes-Benz S550, N/A; High Capacity; Tech # FGN18S179; 180 AMP
• Fits 2007-2010 Mercedes-Benz CL550, N/A; Except High Capacity; Tech # FGN18S179; 180 AMP
• Fits 2007-2010 Mercedes-Benz CL550, N/A; High Capacity; Tech # FGN18S179; 180 AMP
• Fits 2010 Mercedes-Benz S550, N/A; High Capacity; To Chassis/VIN # A322942; Tech # FGN18S179; 180 AMP
• Fits 2010 Mercedes-Benz S550, N/A; High Capacity; From Chassis/VIN # A322943; Tech # FGN18S179; 180 AMP
• Fits 2009 Mercedes-Benz C300, N/A; South Africa Built Vehicle; To Chassis/VIN R 082871; Tech # FGN18S179; 180 AMP
• Fits 2009 Mercedes-Benz C300, N/A; Germany Built Vehicle; To Chassis/VIN F 318287; Tech # FGN18S179; 180 AMP
• Fits 2007-2009 Mercedes-Benz CLK550, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007-2009 Mercedes-Benz ML350, N/A; Tech # FGN18S179; 180 AMP
• Fits 2008 Mercedes-Benz C300, N/A; Tech # FGN18S179; 180 AMP
• Fits 2008 Mercedes-Benz GL450, N/A; To 06/02/08; Tech # FGN18S179; 180 AMP
• Fits 2008 Mercedes-Benz GL550, N/A; To 06/02/08; Tech # FGN18S179; 180 AMP
• Fits 2008 Mercedes-Benz ML550, N/A; To 06/02/08; Tech # FGN18S179; 180 AMP
• Fits 2008 Mercedes-Benz R350, N/A; To 06/02/08; Tech # FGN18S179; 180 AMP
• Fits 2007 Mercedes-Benz GL450, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007 Mercedes-Benz R350, N/A; Tech # FGN18S179; 180 AMP
• Fits 2007 Mercedes-Benz S550, N/A; Except High Capacity; From 08/31/06; Tech # FGN18S179; 180 AMP
• Fits 2007 Mercedes-Benz S550, N/A; Except High Capacity; To 08/31/06; Tech # FGN18S179; 180 AMP
• Fits 2006 Mercedes-Benz E350, N/A; To 10/05/05; Tech # FGN18S179; 180 AMP
• Fits 2006 Mercedes-Benz E350, N/A; From 10/05/05; Tech # FGN18S179; 180 AMP

Installation Notes and Tips

Confirm the technical number FGN18S179, pulley groove count, rotation direction, and amperage rating before installation. Verify whether your Mercedes-Benz application is High Capacity or Except High Capacity, and check VIN breakpoints where listed. Inspect the charging system wiring, belt condition, and battery state before replacing the alternator to avoid repeat failures.

Quality Assurance

Valeo is a long-established OE supplier in electrical systems, and this alternator is part of its premium new-unit lineup. The 100% new construction supports consistent charging performance without relying on remanufactured internal components.