This Valeo alternator is a direct-fit replacement for Porsche Cayenne 958 models equipped with the 3.6L V6. It supplies electrical power while the engine is running and maintains battery charge for the vehicle’s starting, lighting, control module, and accessory systems.
Replace the alternator when testing confirms low or unstable charging voltage, internal bearing noise, intermittent electrical faults, or a battery warning that is not caused by the battery, wiring, belt drive, or voltage connections. Valeo is an established European original-equipment supplier, making this a suitable service replacement for Cayenne owners repairing a failed charging system.
Technical Details
- Manufacturer: Valeo
- Manufacturer part number: 439856
- Part type: Alternator
- Vehicle system: Charging System
- Chassis: Porsche 958
- Position: Engine-mounted charging system component
Fitment & Compatibility
Use the fitment table below to confirm the exact model, year, submodel, and any application notes before ordering.
PMB Performance has more than 20 years of experience with Porsche brake, electrical, cooling, and drivetrain components. Contact our team with your VIN when additional fitment confirmation is needed.
| Year | Make | Model | Submodel | Notes |
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