Valeo Alternator 12V 90A 439003

The Valeo Alternator 12V 90A, part number 439003, is a new rotating electrical unit with an internal regulator and a 90 amp charge current. It is listed as a Valeo unit with a quad leg alternator mount, four-point mounting, and a 6 groove pulley, so the physical mounting style and pulley profile are key checks before purchase.

Electrical and mounting details matter on alternators, and this unit includes a 12 volt output, 127mm centre-to-centre mount spacing, 60mm inside mounting legs, and 8mm pivot and adjusting hole diameters. It also has a connector/clamp with revcounter coupling and is marked R 90 position/degree.

This alternator carries a one year warranty and has a listed weight of 5.95kg. For buyers matching an existing charging system, the most useful identifiers are Valeo brand, part number 439003, 12V rating, 90A output, internal regulator, and 6 groove pulley configuration.

Key Features

• New Valeo alternator
• 12V system voltage
• 90A charge current
• Internal regulator
• 6 groove pulley
• Quad leg mount

Specifications

• Brand: Valeo
• Part No.: 439003
• Type: Alternator
• Voltage: 12V
• Alternator charge current: 90A
• Power rating: 90 amp
• Regulator type: Internal
• Pulley outside diameter: 50mm

Vehicle applications listed for this alternator

• Audi A3
• Audi TT
• Seat Cordoba
• Seat Ibiza
• Seat Toledo
• Skoda Roomster
• Volkswagen Golf
• Volkswagen LT 28-35

Application and Buying Notes

Before ordering, compare the existing alternator against the listed identifiers: Valeo part number 439003, 12V voltage, 90A output, internal regulator, quad leg mount, and 6 groove pulley. Those are the most reliable checks when matching a replacement charging unit, because alternators can look similar while differing in pulley, regulator, or mounting arrangement.

The mounting measurements are important on this unit. It is listed with 127mm mount centre-to-centre spacing, 60mm inside mounting legs, and 8mm pivot and adjusting holes. If the old unit differs in any of those dimensions, the alternator may not line up correctly even if the electrical rating is close.

The connector detail also matters. This alternator is listed with a connector/clamp with revcounter coupling, so the plug and signal arrangement should be checked against the existing vehicle setup. The R 90 position/degree note and four-point mounting are additional identifiers that should be confirmed against the removed unit or vehicle specification.

The application list includes Audi A3 and TT, Seat Cordoba, Ibiza and Toledo, Skoda Roomster, and a range of Volkswagen models including Golf, LT 28-35, LT 28-46, New Beetle, Passat, Polo, Transporter, Transporter / Caravelle and Vento. Use that list as a guide only, and confirm the exact vehicle application by part number and the physical alternator details on the vehicle.

For charging system work, it is also worth checking the pulley section and diameter against the existing belt drive. This unit has a 50mm pulley outside diameter and a 6 groove pulley section, so belt alignment and groove count should be matched carefully before installation.

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 439003 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 60mm, Pivot Hole Diameter 8, Pulley Outside Diameter 50mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 127mm, Alternator Charge Current [A] 90.

Additional published details for cross-checking include Fastening Type Four-point mounting, Weight 5.95kg, Product Group 1 ROTATING ELECTRICAL, Part No. 439003, Brand VALEO, Description Valeo Alternator 12V 90A, Adjusting Hole Diameter 8, Pin Code IR175, Power Rating (Amp) 90, Pulley Section 6 Groove.

Valeo Alternator 12V 90A. Part number 439003 should be checked first. Listed voltage is 12. Listed output rating is 90. 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 439003, 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 90 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include AUDI A3, AUDI A3 1997, AUDI A3 1998, AUDI A3 1999, SEAT CORDOBA, SEAT CORDOBA 1993. 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 fitment by matching the vehicle application, part number 439003, 12V/90A specification, pulley style, mounting dimensions, and connector details against the removed alternator or vehicle cataloguing before purchase.

FAQ

What is the part number for this alternator?

The listed part number is 439003.

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 90A charge current and 90 amp power rating.

What mounting details are listed?

It has a quad leg alternator mount, four-point mounting, 127mm mount centre-to-centre spacing, 60mm inside mounting legs, and 8mm pivot and adjusting holes.

What pulley and connector details are listed?

It has a 6 groove pulley with a 50mm outside diameter, and a connector/clamp with revcounter coupling.

Which vehicles are listed as applications?

Listed applications include Audi A3 and TT, Seat Cordoba, Ibiza and Toledo, Skoda Roomster, and Volkswagen Golf, LT 28-35, LT 28-46, New Beetle, Passat, Polo, Transporter, Transporter / Caravelle and Vento. Fitment should still be confirmed by part number and the physical unit details.