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OE: 13321439407 Fuel Filter for BMW Diesel Engines | BMW

The 13321439407 fuel filter fits BMW diesel vehicles powered by M47 and M57 engines.
It supports clean fuel delivery by removing fine contaminants before fuel reaches the high-pressure system.
This filter is commonly used in BMW 3 Series, 5 Series, X3, and X5 diesel platforms.
Cross-references include 13321439408 and 13327788700, covering multiple BMW diesel applications.

Overview

The OE: 13321439407 fuel filter is designed for BMW diesel vehicles that rely on stable fuel delivery for common-rail injection systems.
It supports clean fuel flow by removing fine contaminants before fuel reaches the high-pressure pump.
This filter helps maintain smooth combustion, predictable torque output, and consistent engine response during daily driving and long-distance operation.
Its construction suits passenger vehicles and SUVs used in mixed urban and highway environments.

Compatibility

This fuel filter fits BMW diesel platforms powered by the following engines:

  • M47 diesel engine

  • M57 diesel engine

Common vehicle applications include BMW 3 Series, 5 Series, X3, and X5 diesel models produced during the early and mid-2000s.
These engines depend on accurate injection timing supported by clean and stable fuel supply.
The filter serves as the primary fine filtration stage within the diesel fuel system.
Its external dimensions and connection layout follow OE specifications for direct installation.

Filtration / Material / Mechanical Design

The filter is built with a reinforced metal housing designed to withstand pressure variations during engine load changes.
Its exterior construction supports stable operation across temperature fluctuations and extended driving cycles.
OE-grade sealing points help ensure secure installation and consistent fuel routing.
The overall housing design aligns with BMW standards for diesel platforms of this generation.
This construction makes the filter suitable for both private use and high-mileage applications.

Flow Stability & Engine Protection

Stable fuel delivery supports accurate injector operation and smooth combustion behavior.
The filter helps maintain consistent idling and reliable cold-start performance.
Clean fuel flow reduces stress on the high-pressure pump during extended driving.
By supporting fuel system stability, the filter contributes to long-term engine reliability and predictable performance.

Interchangeable OE Numbers (Cross-Reference)

  • 13321439408

  • 13327788700

  • 13327788701

  • KL 145 (aftermarket reference)

Maintenance Replacement (Official Interval)

BMW diesel service guidelines typically recommend replacing the fuel filter every 20,000–30,000 km, depending on driving conditions.
Shorter intervals are appropriate in regions with variable diesel quality.
Routine inspection during scheduled maintenance is advised.

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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