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Valeo Alternators Electrical Systems for Passenger car

In a charging mission

The role of the alternator is to provide continual charge to the battery while the engine is running. Alternator is driven by the engine via pulleys ... and a belt drive to retrieve the appropriate energy level from the engine according to electrical energy needs. This supply of power prevents the battery from discharge, and provides the requested power to the car’s electrical devices.


Valeo - your reliable partner

With leading O.E. position and expertise Valeo is able to provide a wide range of Premium quality alternators to the Aftermarket. Valeo latest generations of alternators are developed with high quality components improving life-time, reliability, comfort and efficiency.

  • Easy to replace with O.E design, Valeo alternator range offers exact fit whatever the car
  • Quickest availability of new products on the market thanks to an efficient Valeo Time-To-Market strategy
  • Large offer with strong European range and dedicated Asian vehicules
  • Latest OEM technology integrated in Aftermarket offer (iStARS)

The reliability, the safety and the best quality of Valeo products are driven by constant innovation and strong testing criteria.



Discover our selected Valeo alternators…


Valeo part Application for Year OES cross Technology
443027 AUDI A4, A5,SKODA Octavia, VW Passat 1.8/2.0 2015 06L903018F iStARS
439981 AUDI Q7 Hybrid 2015 4M0903018R iStARS
439869 NISSAN SERENA 2007 2310A-1VA0A iStARS
439866 SUBARU IMPREZA 2013 23700-AA900 iStARS
439679 Mercedes E-Class, C-Class, SLK Class 1.8 TC 2009 0141541502
439560 BMW 3,5,6 SERIES, X1, X3, X5 2005 12 31 7 521 178
12 31 7 525 376
439610 Mercedes C-Class 2007 2711541502  
439476 BMW 1,3,5 SERIES, X1, X3, Z4 1992 12 31 7 521 490
12 31 7 533 270
439653 Mercedes C, CLS, Vito spinter 2006 131546802  
439640 BMW X6, 7 series 2008 12 31 7 573 755
12 31 7 573 754
439751 VW PASSAT, TRANSPORTER 2007 03L903023QX
439613 BMW 1,3 SERIES 2007 12 31 7 802 619  
439398 BMW 3,5,7 SERIES, X5, Z3 2001 12 31 7 501 597  
439544 Mercedes A Class 2004 2661540802  



iStARS - the most efficient alternator - starter in the market

  • iStARS is based on a combined starter - alternator solution in one machine 
  • Best in Class alternator efficiency thanks to synchronous rectification 
  • Weight reduction 
  • CO2 and fuel consumption reduction  
  • Presence example for: Nissan, Mercedes, Audi, Subaru, Peugeot, Citroen….. 

Did you know ?

The world’s premier of Valeo 12V Mild Hybrid, with i-StARS was introduced in 2012 on Nissan Serena S- Hybrid dedicated to the Asian market.


Stop - Start system diagnostics

Stop - Starts system function relies on many parameters and it will never allow automated Stop- Start if all conditions are not properly set in the vehicle.

Analyze all parameters before changing parts. Think about the working conditions that could disable the system..brake vacuum reserve, electric parking brake, brake pedal, clutch pedal, engine operating temperature, better state of charge, power accumulator voltage, air conditioning and outside temperature, accelerator pedal etc.. 

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