/live/media/V3/V3_439420_Fro.jpg)
OE Quality
60-Day Returns
Valeo 439420 Alternator
Valeo Alternator for Mercedes-Benz SLK32 AMG
This Valeo alternator is a 12-volt, 120-amp replacement for the 2002-2004 Mercedes-Benz SLK32 AMG. It uses an internal fan, internal regulator, clockwise rotation, and an 8-groove pulley to match the OE-style charging system layout.
Key Features
- Brand: Valeo OE alternator family
- Part number: 439420
- 12V charging system with 120 amp output
- Internal fan and internal voltage regulator
- Clockwise rotation
- Aluminium housing for OE-style fit and durability
- Technical number: SG12B060
Product Details
Valeo has supplied original equipment electrical components since 1923, and this alternator reflects that OE-focused engineering approach. The Valeo Alternator 439420 is built as a 100% new unit, which helps reduce the risk associated with remanufactured components and supports stable charging performance in the Mercedes-Benz SLK32 AMG. This part cross-references BBB Industries 13921 and Remy 12437 for the same application.
Compatible with 2002-2004 Mercedes-Benz SLK32 AMG, this alternator is a direct-fit charging component for vehicles requiring a 120 amp OE supplier unit. The Valeo 439420 is a practical choice when replacing a worn alternator that is causing charging irregularities or electrical system strain.
Common Issues This Part Can Address
- Battery warning light related to alternator output
- Low charging voltage at idle or under load
- Electrical accessories dimming during operation
- Battery drain caused by weak charging performance
- Noise or failure from an aging alternator assembly
Installation Notes and Tips
Verify pulley groove count, rotation direction, amperage rating, and connector fitment before installation. Confirm the vehicle uses the correct 12-volt charging configuration for the Mercedes-Benz SLK32 AMG. Inspect the drive belt and charging system wiring during replacement to help ensure proper alternator operation after installation.
Quality Assurance
Valeo is a long-standing OE supplier in electrical systems, and this alternator is part of the Valeo OE family. Its new-unit construction and OE-oriented specifications support consistent charging performance for the 2002-2004 Mercedes-Benz SLK32 AMG.
| Brand | Valeo |
|---|---|
| Part Number | 439420 |
| Position | Alternator |
| 51 | |
| Amperage Rating | 120 |
| Family | Valeo OE |
| Fan Type | Internal |
| Housing Material | Aluminium |
| Pulley Groove Quantity | 8 |
| Regulator Type | Internal |
| Rotation Direction | Clockwise |
| Technical Number | SG12B060 |
| Voltage | 12 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2004 | Mercedes-Benz | SLK32 AMG | Base | 3.2L | V6 | N/A | OE Supplier 120 Amp for vehicle; Alternator |
| 2003 | Mercedes-Benz | SLK32 AMG | Base | 3.2L | V6 | N/A | OE Supplier 120 Amp for vehicle; Alternator |
| 2002 | Mercedes-Benz | SLK32 AMG | Base | 3.2L | V6 | N/A | OE Supplier 120 Amp for vehicle; Alternator |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.