Valeo Alternator 12V 120A 439785

The Valeo Alternator 12V 120A, part number 439785, is a new alternator supplied as each and rated at 120 amps. It is listed for vehicles with a start-stop function, so the electrical system requirement is an important checkpoint before purchase.

This unit uses an internal regulator, a 6 groove pulley, clockwise rotation, and a quad leg mount arrangement. Key mounting dimensions include 48mm inside mounting legs, 127mm centre to centre at the mount, and an M8x1.25 adjusting hole diameter.

Valeo is noted here as a leading OE manufacturer and supplier for many euro vehicles. The alternator is a 12 volt unit, weighs 7.06kg, and carries a one year warranty.

Key Features

• 120A alternator output
• 12V unit
• New alternator
• Internal regulator
• 6 groove pulley
• Clockwise rotation

Specifications

• Brand: Valeo
• Part No.: 439785
• Product type: Alternator
• Voltage: 12V
• Charge current: 120A
• Power rating: 120 amp
• Regulator type: Internal
• Pulley section: 6 groove

Fitment guidance

• Fitment data supplied includes Smart and Smart Fortwo applications.
• Smart Fortwo applications are shown across model years 2007 through 2015 in the provided fitment preview.
• Confirm the part number 439785, mount style, pulley details, and electrical specification against the original unit before ordering.

Application and Buying Notes

Start with the part number 439785 and compare it with the alternator already fitted to the vehicle. The listed details matter here: 12V system voltage, 120A charge current, internal regulator, 6 groove pulley, and clockwise rotation all need to line up with the existing charging system layout.

The mounting dimensions are just as important as the electrical rating. This unit is described with 48mm inside mounting legs, 127mm mount centre to centre, an M8x1.25 adjusting hole, and a quad leg mount. If any of those points differ from the original alternator, the part may not suit without further checking.

Because this alternator is listed for vehicles with start-stop function, it is best matched by application details rather than output alone. A 120A alternator can still be the wrong unit if the mount, pulley offset, rotation direction, or regulator type does not match the vehicle’s original specification.

The weight is listed at 7.06kg and the position / degree is L 92, which can also help when comparing against the removed unit or workshop records. If there is any doubt, verify the old alternator, the vehicle’s charging system requirements, and the fitment listing before fitting the replacement.

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 439785 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 48mm, Pulley Outside Diameter 51mm, Regulator Type Internal, Suits Unit Make Valeo, Alternator Mount Quad Leg, Mount Cnt to Cnt 127mm, Alternator Charge Current [A] 120.

Additional published details for cross-checking include Vehicle Equipment for vehicles with start-stop function, Product Group 2 ALTERNATORS, Part No. 439785, Brand VALEO, Description Valeo Alternator 12V 120A, Adjusting Hole Diameter M8X1.25, Power Rating (Amp) 120, Pulley Section 6 Groove, Rotation CW.

Valeo Alternator 12V 120A. Part number 439785 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 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 439785, 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: Always confirm fitment using the part number 439785, the 12V 120A specification, and the physical mounting and pulley details before purchase.

FAQ

What is the part number for this Valeo alternator?

The part number listed is 439785. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new, not remanufactured. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. 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 and a 120 amp power rating. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. These details should still be checked against the original unit before ordering.

Does it have an internal regulator?

Yes. The regulator type is listed as internal. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. These details should still be checked against the original unit before ordering.

What vehicles are shown in the fitment information?

The supplied fitment data includes Smart and Smart Fortwo applications, with Smart Fortwo shown across model years 2007 through 2015 in the provided preview. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. These details should still be checked against the original unit before ordering.

What should be checked before ordering?

Confirm part number 439785, the 12V system, 120A output, internal regulator, 6 groove pulley, clockwise rotation, and the mounting measurements against the existing unit. For this listing, part number 439785 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include SMART FORTWO, SMART FORTWO 2007, SMART FORTWO 2008. These details should still be checked against the original unit before ordering.