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OE: 6394770001 Fuel Filter for Mercedes-Benz Vito W639 Diesel | Mercedes-Benz

The OE: 6394770001 fuel filter is designed specifically for Mercedes-Benz Vito and Viano W639 diesel models.
It provides fine filtration for common-rail diesel systems that require clean and stable fuel delivery.
This filter removes small contaminants and moisture before fuel reaches the high-pressure pump and injectors.
Its function supports smooth combustion, steady torque output, and consistent engine response during daily and commercial use.

Compatibility

This fuel filter fits Mercedes-Benz W639 platform vehicles equipped with:

  • OM646 2.2-liter CDI diesel engine

  • OM651 2.1-liter CDI diesel engine

These engines are widely used in passenger transport, logistics, and service fleets.
They rely on accurate injection timing and stable fuel pressure.
The filter operates as the primary fine filtration stage in the fuel system.
Its housing shape and connection layout are designed specifically for the W639 chassis.
Direct installation is supported without modification.

Filtration / Material / Mechanical Design

The filter uses a multi-layer synthetic filtration medium engineered to capture fine particles efficiently.
Its reinforced metal housing provides durability under pressure fluctuations and temperature changes.
Integrated water-separation elements help control moisture levels in the fuel supply.
OE-grade sealing surfaces ensure proper fitment and stable fuel pressure.
The internal flow structure supports consistent delivery under varying engine loads.

Flow Stability & Engine Protection

Clean fuel supports precise injector spray patterns and stable combustion.
The filter helps maintain smooth idle and predictable throttle response.
Stable filtration reduces load on the high-pressure pump during extended operation.
By controlling fine debris and moisture, the filter supports long-term injector reliability.
It is well suited for vehicles used in high-mileage and stop-and-go duty cycles.

Interchangeable OE Numbers (Cross-Reference)

  • A6394770001

  • 6394770101

  • 0024773001

  • 0024773801

Maintenance Replacement (Official Interval)

Mercedes-Benz service guidelines recommend replacing the diesel fuel filter every 20,000–30,000 km.
Shorter intervals are appropriate in regions with inconsistent diesel quality.
Routine inspection for moisture accumulation is advised during scheduled servicing.

Sourcing & Ordering FAQ

❓ Is this product suitable for my market?

Product suitability depends on operating conditions, usage intensity, and local expectations.

We evaluate product recommendations based on real application scenarios,

not just vehicle compatibility.

❓ Do you supply OEM or aftermarket versions?

Depending on the product, we can support OEM-standard or verified aftermarket options.

The recommendation is based on quality stability, cost structure, and market positioning — not labels.

❓ Can this product be combined with other parts in one shipment?

Yes.

Consolidated sourcing across categories is one of our core strengths,

helping buyers reduce freight cost and inventory pressure.

❓ How is quality controlled before shipment?

All products are inspected before shipment.

We work with factories that maintain stable production processes rather than short-term output.

❓ Can I start with a trial order?

Yes.

Trial orders are encouraged for new cooperation,

especially for engine and cooling system service parts where consistency matters.

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Competitive Global Pricing

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