Valeo Alternator 12V 120A 439391

This Valeo alternator is a 12V, 120A unit, listed as part number 439391 and supplied new as an each item. It is fitted with an internal regulator, a 6 groove pulley, and a twin leg alternator mount, so it is important to check the mounting style and electrical connections against the unit being replaced before ordering.

The alternator carries a charge current rating of 120A and uses a double pivot lever fastening type. Key dimensions include 82mm inside mounting legs, 162mm mount centre to centre, a 10mm pivot hole diameter, and a 9mm adjusting hole diameter. Those measurements are the practical points to confirm when matching a replacement alternator.

Valeo describes the unit as being developed with high quality components to improve lifetime, reliability, comfort, and efficiency. It is a rotating electrical component with a weight of 6.45kg, and the connector note states there is no connector for revolution counter, which is another useful checkpoint when comparing to the original alternator.

Key Features

• 12V alternator with 120A charge current
• Valeo brand, part number 439391
• New unit supplied each
• Internal regulator
• 6 groove pulley
• Twin leg mount with double pivot lever fastening

Specifications

• Voltage: 12V
• Alternator charge current: 120A
• Power rating: 120A
• Part No.: 439391
• Brand: Valeo
• New / Reman.: New
• Warranty: One Year
• Pulley outside diameter: 65mm

Application and Buying Notes

Before fitting, compare the existing alternator to this Valeo 12V 120A unit by part number 439391, mounting style, and pulley configuration. The twin leg mount, double pivot lever fastening, 82mm inside mounting legs, and 162mm mount centre to centre are the most useful physical checks when confirming whether the replacement will suit your application.

The pulley specification is also important. This alternator uses a 65mm pulley with a 6 groove section, so belt profile and alignment should be checked carefully against the removed unit. If the pulley type or groove count differs, the alternator may not match the vehicle’s belt drive setup.

Electrical compatibility should be checked as well. This unit is 12V with an internal regulator and is listed with no connector for revolution counter. If your original alternator has a different regulator arrangement or an additional connector requirement, confirm those details before purchase to avoid installation issues.

The weight is listed at 6.45kg, which can be a helpful reference when comparing the replacement to the existing alternator. As with any rotating electrical part, the safest approach is to match the part number first, then confirm the mounting, pulley, and connector details against the original unit or vehicle application information.

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 439391 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, Inside Mounting Legs 82mm, Pivot Hole Diameter 10, Pulley Outside Diameter 65mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 162mm, Alternator Charge Current [A] 120.

Additional published details for cross-checking include Fastening Type Double Pivot Lever, Weight 6.45kg, Product Group 1 ROTATING ELECTRICAL, Part No. 439391, Brand VALEO, Description Valeo Alternator 12V 120A, Adjusting Hole Diameter 9, Pin Code IR139, Power Rating (Amp) 120, Pulley Section 6 Groove.

Valeo Alternator 12V 120A. Part number 439391 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 Twin 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 439391, 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 120 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm fitment using part number 439391 and the listed application details, including 12V, 120A, twin leg mount, 6 groove pulley, internal regulator, and the mounting measurements before ordering.

FAQ

What is the part number for this alternator?

The part number listed is 439391. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

What voltage and output does it have?

It is a 12V alternator with a 120A charge current rating. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

Does it have an internal regulator?

Yes, the regulator type is internal. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

What pulley setup does it use?

It has a 65mm pulley outside diameter and a 6 groove pulley section. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.

What should I check before buying?

Check the part number 439391, 12V system voltage, 120A output, twin leg mount, 82mm inside mounting legs, 162mm mount centre to centre, and the 6 groove pulley setup against your existing alternator. For this listing, part number 439391 is the main reference point. Listed voltage is 12. Listed output rating is 120. These details should still be checked against the original unit before ordering.