Valeo Alternator 12V 120A Part No. 439298

The Valeo alternator listed here is a new 12V, 120A unit with part number 439298 and Pin Code IR139. It is a rotating electrical component supplied as each, with an internal regulator and a 6 groove pulley, so the electrical and belt-drive details are already defined before you compare it to the vehicle.

Key mounting measurements are also specified: mount leg thickness 56mm, mount centre to centre 156mm, pivot hole diameter 10mm, and adjusting hole diameter 10mm. The alternator uses a single pivoted lever fastening type and a single leg alternator mount, which are important checkpoints when matching to the existing unit.

Valeo is identified as the brand and the unit is described as new, not remanufactured. It weighs 6.35kg and has a pulley outside diameter of 50mm, so it is sensible to compare the physical layout, belt alignment, and electrical connection arrangement with the alternator being replaced before ordering.

The connector/clamp detail is listed as no connector for revolution counter, which matters if the vehicle or loom expects a specific charge or engine speed signal arrangement. The one year warranty is also stated, giving a clear commercial reference point for a replacement alternator in this specification.

Key Features

• 12V alternator with 120A charge current
• Valeo brand, new unit
• Internal regulator
• 6 groove pulley, 50mm outside diameter
• Single leg alternator mount
• Single pivoted lever fastening type

Specifications

• Part No. 439298
• Pin Code IR139
• Voltage: 12V
• Alternator charge current: 120A
• Power rating: 120A
• Pulley section: 6 groove
• Mount leg thickness: 56mm
• Mount centre to centre: 156mm

Fitment guidance

• Fitment information supplied references Mercedes-Benz applications, including C-Class, CLK, M-Class and SLK.
• Sample application data includes Mercedes-Benz C-Class model years 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 and 2008.
• Because the fitment list is application-based rather than a full vehicle-by-vehicle interchange table, the part number and physical mounting measurements should still be checked against the original alternator.
• Match the existing alternator’s mount layout, pulley groove count, regulator arrangement and connector setup before purchase.

Application and Buying Notes

When replacing an alternator, the safest first check is the part number. This unit is identified as Valeo 439298 with Pin Code IR139, and it is a 12V 120A alternator. Those identifiers, along with the internal regulator and 6 groove pulley, should be compared with the existing unit in the vehicle.

The mounting dimensions are just as important as the electrical rating. The alternator is listed with a 56mm mount leg thickness, 156mm mount centre to centre, and 10mm pivot and adjusting holes. If those dimensions do not line up with the bracket and hardware already on the vehicle, the unit may not install correctly even if the vehicle family appears similar.

The connector detail also needs attention. This alternator is listed with no connector for revolution counter, so it should only be matched to an application that uses the same charging and signal arrangement. If the removed alternator has a different plug, sense wire, or tachometer connection setup, that difference must be resolved before fitting.

The fitment references supplied point to Mercedes-Benz applications, including C-Class, CLK, M-Class and SLK, with sample C-Class years shown from 2000 through 2008. Those references are useful starting points, but they do not replace checking the original part number, pulley configuration and mount style on the vehicle.

As a replacement part, this Valeo alternator is supplied new and carries a one year warranty. The unit weighs 6.35kg, so handling and installation should be done with care, especially when aligning the single leg mount and single pivoted lever fastening arrangement into the existing bracketry.

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 439298 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 56mm, Pivot Hole Diameter 10, Pulley Outside Diameter 50mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 156mm, Alternator Charge Current [A] 120.

Additional published details for cross-checking include Fastening Type Single pivoted lever, Weight 6.35kg, Product Group 1 ROTATING ELECTRICAL, Part No. 439298, Brand VALEO, Description Valeo Alternator 12V 120A, Adjusting Hole Diameter 10, Pin Code IR139, Power Rating (Amp) 120, Pulley Section 6 Groove.

Valeo Alternator 12V 120A. Part number 439298 should be checked first. Listed voltage is 12. Listed output rating is 120. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single 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.

Compatibility note: Confirm compatibility by matching part number 439298, Pin Code IR139, the 12V 120A rating, the 6 groove pulley, the internal regulator, and the 56mm / 156mm / 10mm mounting details against the original alternator and vehicle application before ordering.

FAQ

What is the part number for this alternator?

The part number listed is 439298, and the Pin Code is IR139.

Is this alternator new or remanufactured?

It is listed as new.

What voltage and output does it have?

It is a 12V alternator with a 120A charge current and 120A power rating.

Does it have an internal regulator?

Yes. The regulator type is listed as internal.

What mounting details are provided?

The listed mounting details are 56mm mount leg thickness, 156mm mount centre to centre, 10mm pivot hole diameter, and 10mm adjusting hole diameter, with a single leg alternator mount and single pivoted lever fastening type.

Which vehicles are referenced in the fitment information?

The supplied fitment references Mercedes-Benz applications, including C-Class, CLK, M-Class and SLK, with sample C-Class model years shown from 2000 to 2008.