Valeo Alternator 12V 140A Part No. 439556

The Valeo alternator listed here is a 12V, 140A unit, part number 439556. It is supplied new, not remanufactured, and uses an internal regulator with a 6 groove pulley, which are key checks when matching an alternator to the vehicle.

This unit is described as a Valeo alternator with quad leg mounting and four-point mounting, and it has a pulley outside diameter of 58mm. The connector note states no connector for revolution counter, so the charge system connection style needs to be confirmed against the existing unit before ordering.

Valeo is identified here as a leading OE manufacturer and supplier for many euro vehicles. That matters because alternators are not interchangeable on brand name alone; voltage, amperage, mounting style, pulley section, and connector arrangement all need to line up with the vehicle application and the part already fitted.

The weight is listed at 6.93kg and the warranty is one year. Those are useful reference points when comparing a replacement unit, checking freight handling, or confirming the unit you receive matches the expected specification for a Valeo 12V 140A alternator.

Key Features

• 12V alternator with 140A output
• New unit, not remanufactured
• Internal regulator
• 6 groove pulley
• Quad leg mount with four-point mounting
• 58mm pulley outside diameter

Specifications

• Part No.: 439556
• Brand: Valeo
• Product type: Alternator
• Voltage: 12V
• Power rating: 140A
• Charge current: 140A
• Pulley section: 6 groove
• Pulley outside diameter: 58mm

Fitment guidance

• Fitment information supplied references Audi A4 applications from 2004 through 2009.
• Fitment information supplied references Porsche Cayenne applications from 2010 through 2017.
• Vehicle application should still be checked against the existing alternator and the part number 439556 before purchase.
• Mounting style, pulley section, connector arrangement, and output rating must all match the vehicle requirements.

Application and Buying Notes

For this alternator, the most important checks are part number 439556, 12V system voltage, 140A charge output, and the 6 groove pulley with 58mm outside diameter. If any of those details differ from the unit already fitted to the vehicle, the alternator may not be the correct match even if the vehicle badge looks similar.

The mounting arrangement is listed as quad leg with four-point mounting, which is a practical checkpoint for Euro vehicles where alternator housings can vary between engine and accessory setups. The connector note also matters: this unit is listed as having no connector for revolution counter, so the plug and signal arrangement should be compared carefully before fitting.

Because this is a new Valeo unit, it is intended to replace a compatible alternator with matching electrical and mechanical specification rather than a worn or repaired original. The one-year warranty and 6.93kg weight are useful reference points, but they do not replace a direct fitment check against the old alternator.

If you are fitting to an Audi A4 or Porsche Cayenne application, confirm the exact model year, engine variant, and alternator mounting details against the vehicle’s existing part. Alternators can share broad vehicle coverage while still differing in pulley, regulator, or connector setup, so the safest approach is to verify the physical unit as well as the application listing.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number 439556 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty One Year, Pulley Outside Diameter 58mm, Regulator Type Internal, Voltage 12, New / Reman. New, Position / Degree R 90, Connector / Clamp No Connector for Revolution Counter.

Additional published details for cross-checking include Product Group 2 ALTERNATORS, Part No. 439556, Brand VALEO, Description Valeo Alternator 12V 140A, Power Rating (Amp) 140, Pulley Section 6 Groove, Suits Unit Make Valeo, Alternator Mount Quad Leg, Alternator Charge Current [A] 140, Fastening Type Four-point mounting.

Valeo Alternator 12V 140A. Part number 439556 should be checked first. Listed voltage is 12. Listed output rating is 140. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Quad Leg. Regulator type is Internal. Pulley configuration is 6 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number 439556, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 140 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AUDI A4, AUDI A4 2004, AUDI A4 2005, AUDI A4 2006, PORSCHE CAYENNE, PORSCHE CAYENNE 2010. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Please confirm compatibility using part number 439556 and the existing alternator’s voltage, amperage, pulley section, mounting style, and connector arrangement before ordering.

FAQ

What is the part number for this alternator?

The part number listed is 439556.

What voltage and output does this alternator have?

It is a 12V alternator with a 140A power rating and 140A charge current.

Is this a new or remanufactured unit?

This alternator is listed as new.

What pulley and regulator details are listed?

It has a 6 groove pulley, a 58mm pulley outside diameter, and an internal regulator.

What mounting type is listed for this alternator?

The alternator mount is listed as quad leg, with four-point mounting.

Which vehicle applications are referenced?

The supplied fitment information references Audi A4 applications from 2004 to 2009 and Porsche Cayenne applications from 2010 to 2017, but fitment should still be confirmed against the existing unit and part number 439556.