Valeo Alternator 12V 120A New Twin Leg 439398

The Valeo Alternator 12V 120A is a new rotating electrical unit with part number 439398. It is rated at 12 volts and 120 amps, and it uses a 6 groove pulley with a 51mm outside diameter.

This alternator has a twin leg mount, double pivot lever fastening type, and an internal regulator. The unit is listed as new, weighs 6.93kg, and is supplied without a connector for a revolution counter.

The product is identified as Valeo with pin code IR122 and description 439398. It is intended for applications that call for a Valeo alternator with these exact electrical and mounting details, so matching the part number and unit specification is important before ordering.

Key Features

• 12V, 120A alternator
• New unit
• Valeo brand
• Part No. 439398
• Twin leg mount
• Internal regulator

Specifications

• Voltage: 12V
• Charge current: 120A
• Power rating: 120 amp
• Part number: 439398
• Brand: Valeo
• Pin code: IR122
• Regulator type: Internal
• Alternator mount: Twin leg

Fitment guidance

• Fitment data supplied includes BMW applications across the 3 Series, 5 Series, 7 Series, 8 Series, X5 and Z3 families.
• BMW 3 applications are shown across multiple model years, including 1991 through 2001 in the supplied preview.
• No exact engine or chassis details are provided here, so confirm the part number and alternator specifications against the vehicle before purchase.

Application and Buying Notes

Confirm the existing alternator part number before buying. The key identifier here is 439398, with Valeo as the brand and IR122 as the pin code. Matching the part number is the most reliable way to check you are comparing the same unit.

The electrical rating is 12V and 120A, so this alternator needs to suit the vehicle’s charging system requirements. Do not rely on appearance alone, because mount style, pulley layout and regulator type all need to line up with the original unit.

Mounting and drive details matter on this part. It uses a twin leg mount, double pivot lever fastening, a 6 groove pulley and a 51mm pulley outside diameter. Those details affect whether the alternator sits correctly and aligns with the belt system.

The unit is listed with an internal regulator and no connector for revolution counter. If the original alternator has different plug or signal arrangements, check the connection points carefully before fitting.

This alternator is sold as a new unit and carries no warranty. The weight is 6.93kg, which may be useful when comparing replacement units or confirming you have the correct rotating electrical assembly in hand.

Where fitment is being checked against a BMW application, use the vehicle details as a guide only and verify them against the actual part number, mount style and electrical rating. The supplied fitment preview is broad, not a substitute for a direct parts match.

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 439398 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, Power Rating (Amp) 120, Pulley Section 6 Groove, Suits Unit Make Valeo, Alternator Mount Twin Leg, Alternator Charge Current [A] 120, Fastening Type Double Pivot Lever, Weight 6.93kg.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. 439398, Brand VALEO, Description Valeo Alternator 12V 120A, Pin Code IR122, Pulley Outside Diameter 51mm, Regulator Type Internal, Voltage 12, New / Reman. New, Position / Degree L 35.

Valeo Alternator 12V 120A. Part number 439398 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.

Compatibility note: Please confirm fitment by checking part number 439398, the 12V 120A rating, twin leg mount, 6 groove pulley, 51mm pulley outside diameter, and internal regulator details against your existing alternator and vehicle application before ordering.

FAQ

What is the part number for this alternator?

The part number is 439398. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.

What are the electrical specifications?

It is a 12V alternator rated at 120A. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.

What type of regulator does it use?

It uses an internal regulator. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.

What mounting style does it have?

It has a twin leg mount with double pivot lever fastening. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.

What pulley details are listed?

It has a 6 groove pulley with a 51mm outside diameter. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.

Is vehicle fitment fully confirmed here?

No exact fitment is confirmed by engine or chassis details in the supplied data. The fitment preview includes BMW 3, 5, 7, 8, X5 and Z3 applications, so the part number and alternator specifications should be checked against the vehicle before purchase. For this listing, part number 439398 is the main reference point. Listed voltage is 12. Listed output rating is 120. Published fitment references include BMW 3, BMW 3 1991, BMW 3 1992. These details should still be checked against the original unit before ordering.