Valeo Alternator 12V 200A Part No. 439842

The Valeo Alternator 12V 200A, part number 439842, is a new rotating electrical unit with direct fastening and direct alternator mount. It is set up for 12-volt systems and carries a 200 amp charge current, so it is the type of replacement alternator to match carefully against the vehicle’s original unit before ordering.

Key physical details include a 55 mm pulley outside diameter, a 6 groove pulley section, internal regulator type, and a unit weight of 7.66 kg. The connector detail is listed as no connector for revolution counter, which is worth checking against the existing alternator and loom arrangement on the vehicle.

Valeo is listed as the brand and as a leading OE manufacturer and supplier for many euro vehicles. The alternator is supplied new, not remanufactured, and includes a one year warranty. For buyers comparing options, the part number 439842 is the most useful identifier to confirm before any purchase.

This alternator is listed against a Mercedes-Benz fitment group, including CLS, E-Class, GL-Class, GLE, GLS, M-Class and SL applications. Because alternators can vary by engine, charging setup, pulley arrangement and connector style, the safest approach is to confirm the part number and the application details together rather than relying on the model name alone.

Key Features

• 12V alternator with 200A charge current
• New unit, not remanufactured
• Internal regulator type
• Direct fastening and direct alternator mount
• 55 mm pulley outside diameter
• 6 groove pulley section

Specifications

• Brand: Valeo
• Part No.: 439842
• Product type: Alternator
• Voltage: 12V
• Power rating: 200 amp
• Charge current: 200A
• Unit of measure: Each
• Weight: 7.66 kg

Listed Fitment

• Mercedes-Benz CLS
• Mercedes-Benz E-Class
• Mercedes-Benz GL-Class
• Mercedes-Benz GLE
• Mercedes-Benz GLS
• Mercedes-Benz M-Class
• Mercedes-Benz SL

Application and Buying Notes

Before ordering, compare the original alternator’s part number, pulley size and connector arrangement with this Valeo unit. The listed part number is 439842, the pulley outside diameter is 55 mm, and the pulley section is 6 groove, so those details should be matched against the vehicle currently fitted.

The alternator is specified as 12V and 200A, which makes it important to confirm the charging system specification on the vehicle rather than assuming all alternators from the same model range are the same. A direct fastening alternator mount is listed, so the mounting style should also be checked against the existing unit and bracket setup.

The connector note is particularly important here: this alternator is listed with no connector for revolution counter. If the original part uses a different connector or sensor arrangement, the replacement may not suit without further verification. That is one of the main reasons part number and application details need to be checked together.

Fitment is shown against Mercedes-Benz CLS, E-Class, GL-Class, GLE, GLS, M-Class and SL applications, but those model groups can still cover different variants. Matching the part number, pulley details, regulator type and mounting style is the sensible way to avoid ordering the wrong alternator.

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 439842 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, Pulley Outside Diameter 55mm, Regulator Type Internal, Voltage 12, New / Reman. New, Fastening Type Direct fastening, Weight 7.66kg, Product Group 1 ROTATING ELECTRICAL.

Additional published details for cross-checking include Part No. 439842, Brand VALEO, Description Valeo Alternator 12V 200A, Power Rating (Amp) 200, Pulley Section 6 Groove, Suits Unit Make Valeo, Alternator Mount Direct, Alternator Charge Current [A] 200, Connector / Clamp No Connector for Revolution Counter.

Valeo Alternator 12V 200A. Part number 439842 should be checked first. Listed voltage is 12. Listed output rating is 200. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Direct. 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 439842, 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 200 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include MERCEDES-BENZ CLS, MERCEDES-BENZ CLS 2014, MERCEDES-BENZ CLS 2015, MERCEDES-BENZ CLS 2016. 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: Please confirm fitment using the vehicle’s original part number, the listed Valeo part number 439842, pulley details, mounting style and connector arrangement before purchase. Model name alone is not enough to confirm compatibility on alternators.

FAQ

What is the part number for this alternator?

The listed part number is 439842.

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 200 amp charge current and a 200 amp power rating.

What pulley details are listed?

The pulley outside diameter is 55 mm and the pulley section is 6 groove.

Does it have an internal or external regulator?

The regulator type is listed as internal.

Which vehicles are listed in the fitment group?

The fitment group includes Mercedes-Benz CLS, E-Class, GL-Class, GLE, GLS, M-Class and SL applications. Final compatibility should still be checked against the part number and the vehicle’s original alternator details.