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OE: 13321270038 Fuel Filter for BMW Diesel Engines | BMW

The 13321270038 fuel filter fits BMW diesel vehicles powered by M47 and early M57 engines.
It removes fine contaminants before fuel reaches the high-pressure injection system, supporting smooth engine operation and stable torque delivery.
This filter is commonly used in BMW 3 Series E46, 5 Series E39, and X5 E53 diesel platforms.
Cross-references include 13321439407 and 13321702632.

Overview

The OE: 13321270038 fuel filter is designed for BMW diesel vehicles that require consistent and clean fuel delivery.
It supports common-rail and early high-pressure diesel injection systems by removing fine contaminants before fuel reaches the injection pump.
This filter helps maintain smooth combustion, predictable torque output, and stable engine response.
Its construction suits passenger cars and SUVs used in daily driving and extended highway operation.

Compatibility

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

  • M47 diesel engine

  • Early M57 diesel engine variants

Typical applications include BMW 3 Series E46, 5 Series E39, X5 E53, and selected 7 Series E38 diesel models.
These engines depend on stable fuel pressure and clean fuel supply for accurate injection timing.
The filter operates as the primary fine filtration stage in the diesel fuel system.
Its external dimensions and connection layout follow OE specifications for direct replacement during routine service.

Filtration / Material / Mechanical Design

The filter is built with a reinforced cylindrical metal housing designed to withstand pressure changes during engine load variations.
Its exterior construction supports durability under temperature fluctuations and long operating cycles.
OE-grade sealing points help ensure secure installation and consistent fuel routing.
The housing design aligns with BMW engineering standards for diesel platforms of this generation.
This construction supports reliable operation in both private vehicles and higher-mileage applications.

Flow Stability & Engine Protection

Stable fuel delivery supports accurate injector operation and smooth combustion behavior.
The filter helps maintain consistent idling and dependable cold-start performance.
Clean fuel flow reduces stress on the injection 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)

  • 13321439407

  • 13321702632

  • 13321709535 (platform-related successor)

  • WK 145 (aftermarket reference)

Maintenance Replacement (Official Interval)

BMW diesel service guidance typically recommends replacing the fuel filter every 20,000–30,000 km, depending on operating 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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