Valeo Alternator 12V 125A Part No. 439521

This Valeo alternator is a 12V unit with a 125A charge current and part number 439521. It is supplied as a new alternator in each quantity, with internal regulation and a 6 groove pulley, so it suits buyers replacing an existing Valeo unit that matches these details.

Mounting and connection details matter with alternators, and this unit has a four-point mounting arrangement, quad leg alternator mount, 46mm inside mounting legs, a 139mm mount centre-to-centre measurement, and an M10x1.5 / 10 pivot hole diameter with the same size adjusting hole diameter. Those measurements should be checked carefully against the vehicle and the removed unit before ordering.

The alternator is listed with a pulley outside diameter of 54mm, position / degree L 40, and no connector for revolution counter. It weighs 6.2kg and is identified as a Valeo rotating electrical part, which is useful when confirming replacement against the original component rather than relying on vehicle make alone.

Key Features

• 12V alternator with 125A output
• Valeo brand, part no. 439521
• New unit, supplied each
• Internal regulator type
• 6 groove pulley
• Four-point mounting with quad leg mount

Specifications

• Voltage: 12V
• Alternator charge current: 125A
• Power rating: 125A
• Part No.: 439521
• Pin code: IR125
• Pulley outside diameter: 54mm
• Pulley section: 6 groove
• Regulator type: Internal

Fitment guidance

• Fitment information is referenced for Citroën and Peugeot applications.
• Listed makes include Citroën Berlingo, Berlingo Multispace, C2, C3, C4, C4 Grand Picasso, C4 Picasso, C5 and Xsara.
• Listed makes also include Peugeot 206, 207, 307, 308, 308 SW, 407 and Partner.
• Sample application listings include Citroën Berlingo 2000 to 2010 and Peugeot 206 2001 to 2007, plus Peugeot 207 2006 to 2008.
• Confirm the alternator part number and mounting measurements against the vehicle before purchase.

Application and Buying Notes

The most important buying checks on this alternator are the part number 439521, the 12V system voltage, and the 125A output rating. If the vehicle uses a different output, different regulator arrangement, or a different pulley setup, this unit may not be suitable even if the vehicle badge looks similar.

Mounting dimensions should be matched carefully. This alternator has 46mm inside mounting legs, 139mm mount centre-to-centre, M10x1.5 / 10 pivot and adjusting holes, and a four-point mounting / quad leg layout. Those details are often the deciding factors when replacing a rotating electrical unit, especially on applications where several variants exist.

The pulley and connector details also need checking. The unit has a 54mm pulley outside diameter, a 6 groove pulley section, and no connector for revolution counter. If the removed alternator differs in pulley profile, spacing, or electrical connection, the replacement should be reviewed before fitting.

This is a Valeo new alternator weighing 6.2kg and listed with no warranty. When comparing options, use the original part number, mounting pattern, and pulley configuration first, then confirm the listed application details for Citroën and Peugeot models where available.

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 439521 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 No Warranty, Inside Mounting Legs 46mm, Pivot Hole Diameter M10x1.5 / 10, Pulley Outside Diameter 54mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 139mm, Alternator Charge Current [A] 125.

Additional published details for cross-checking include Fastening Type Four-point mounting, Weight 6.2kg, Product Group 1 ROTATING ELECTRICAL, Part No. 439521, Brand VALEO, Description Valeo Alternator 12V 125A, Adjusting Hole Diameter M10x1.5 / 10, Pin Code IR125, Power Rating (Amp) 125, Pulley Section 6 Groove.

Valeo Alternator 12V 125A. Part number 439521 should be checked first. Listed voltage is 12. Listed output rating is 125. 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 439521, 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 125 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include CITROEN BERLINGO, CITROEN BERLINGO 2000, CITROEN BERLINGO 2001, CITROEN BERLINGO 2002, PEUGEOT 206, PEUGEOT 206 2001. 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: Confirm compatibility using part number 439521, the 12V / 125A specification, and the mounting and pulley measurements before ordering. Vehicle model references are provided as guidance only and should be matched to the existing alternator and application details on the vehicle.

FAQ

What is the part number for this alternator?

The part number is 439521.

What voltage and output does it have?

It is a 12V alternator with a 125A charge current and 125A power rating.

Is this a new or remanufactured unit?

It is listed as new.

What pulley and regulator type does it use?

It has a 6 groove pulley with a 54mm outside diameter and an internal regulator.

Which mounting details should be checked before ordering?

Check the four-point mounting, quad leg alternator mount, 46mm inside mounting legs, 139mm mount centre-to-centre, and the M10x1.5 / 10 pivot and adjusting holes.

Does it include a warranty?

No warranty is listed for this alternator.