Valeo Alternator 12V 180A Part No. 439704

This Valeo alternator is a 12V, 180A unit supplied new and listed under Part No. 439704. It uses a pad mount with direct fastening and has a 6 groove pulley with a 50mm outside diameter, making the mounting style and drive detail important to confirm before purchase.

The alternator is fitted with an internal regulator and a side-entry regulator plug. The note also states it is not interchangeable with 439653, so part number matching matters as much as the physical measurements when checking replacement suitability.

For identification and ordering, the recorded OEM number is A0141543902 and the pin code is IR228. The unit weight is 7.74kg, and the listed mount details include 70mm mount leg thickness, 163mm mount centre to centre, and 172mm mount centres B.

Key Features

• 12V alternator with 180A charge current
• New unit from Valeo
• Internal regulator
• 6 groove pulley
• Direct fastening with pad mount
• Side-entry regulator plug

Specifications

• Brand: Valeo
• Part No.: 439704
• OEM Number: A0141543902
• Voltage: 12V
• Alternator charge current: 180A
• Regulator type: Internal
• Pulley section: 6 groove
• Pulley outside diameter: 50mm

Fitment guidance

• Supported fitment data references Mercedes-Benz applications, including E-Class and GLK-Class variants.
• Recorded application data includes Mercedes-Benz E-Class 2011, 2012 and 2013.
• Recorded application data includes Mercedes-Benz GLK-Class 2008, 2009, 2010, 2011, 2012, 2013 and 2014.
• Fitment is not listed here by full vehicle engine or build specification, so part number and mounting details should still be checked carefully.

Application and Buying Notes

Before ordering, compare Part No. 439704 against the part removed from the vehicle and confirm it is not the superseded or different unit 439653. The alternator is a 12V, 180A Valeo unit with an internal regulator, so the vehicle’s charging system requirements need to match those details.

Mounting and connection style are equally important. This alternator uses a pad mount, direct fastening, a 6 groove pulley, and a side-entry regulator plug. The listed mount leg thickness is 70mm, with 163mm mount centre to centre and 172mm mount centres B, so these dimensions should be checked against the existing unit before fitting.

The note also states there is no connector for a revolution counter. If the vehicle or harness expects a different style of connection, that must be confirmed before purchase. Matching the OEM number A0141543902, the pin code IR228, and the physical mounting layout is the safest way to avoid a mismatch.

Where fitment is listed against Mercedes-Benz E-Class and GLK-Class applications, treat that as a guide rather than a blanket guarantee. Final confirmation should always be based on the part number, the plug orientation, the pulley groove count, and the mounting measurements supplied with the vehicle’s original alternator.

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 439704 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, Mount Leg Thickness 70mm, Power Rating (Amp) 180, Pulley Section 6 Groove, Suits Unit Make Valeo, Note Regulator plug - side entry - Not Inter changeable with 439653, Mount Cnt to Cnt 163mm, OEM Number A0141543902.

Additional published details for cross-checking include Position / Degree 78, Connector / Clamp No Connector for Revolution Counter, Product Group 2 ALTERNATORS, Part No. 439704, Brand VALEO, Description Valeo Alternator 12V 180A, Mount Centres B 172mm, Pin Code IR228, Pulley Outside Diameter 50mm.

Valeo Alternator 12V 180A. Part number 439704 should be checked first. Listed voltage is 12. Listed output rating is 180. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Pad. 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 439704, 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 180 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment by matching Part No. 439704, OEM number A0141543902, and the mounting and connector details against the vehicle’s original alternator before ordering.

FAQ

What is the voltage and charge rating of this alternator?

It is a 12V alternator rated at 180A. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

The unit is listed as new. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It uses an internal regulator with a side-entry regulator plug. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.

Does it have a 6 groove pulley?

Yes. The pulley section is listed as 6 groove, and the pulley outside diameter is 50mm. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.

What vehicles is it listed against?

The supplied fitment references Mercedes-Benz E-Class and GLK-Class applications, including E-Class 2011 to 2013 and GLK-Class 2008 to 2014. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.

What should I check before buying?

Confirm Part No. 439704, the OEM number A0141543902, the 12V 180A rating, the pad mount, the 6 groove pulley, and the side-entry regulator plug against the original unit. For this listing, part number 439704 is the main reference point. Listed voltage is 12. Listed output rating is 180. Published fitment references include MERCEDES-BENZ E-CLASS, MERCEDES-BENZ E-CLASS 2011, MERCEDES-BENZ E-CLASS 2012. These details should still be checked against the original unit before ordering.