BMW E46 E60 E87 E90 Engine Air Filter Top Cover Trim M47N2 Diesel

BMW E46 E60 E87 E90 Engine Air Filter Top Cover Trim M47N2 Diesel is a factory-made intake system housing designed for BMW M47N2 diesel engines. Engineered by the manufacturer, it ensures stable airflow to the engine, proper seating of the filter element, and safe operation of the power unit. This is a solution for users looking for a component consistent with the factory design rather than replacements with uncertain parameters.

Specifications and technical data

• SKU: 7787254
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 13717787254
• Substitutable numbers: 13717787254, 7787254
• Fuel type: Diesel
• Category: Air Filter Housings

Purpose and function in the intake system

The air filter housing in a diesel engine is responsible for the airtight routing of air from the intake to the filter element and further to the intake manifold. For M47N2 units in BMW 3 and 5 series, as well as the next generation of 1 and 3 series, a correctly selected housing is crucial for:

• maintaining proper airflow under various engine loads,
• ensuring stable mounting of the air filter element,
• limiting the intake of contaminants from outside the filter,
• reducing the noise of sucked-in air in the engine compartment.

Thanks to a design consistent with the manufacturer's specifications, the housing works in harmony with other intake system components, maintaining the factory performance characteristics of the diesel engine.

Benefits of using an original BMW housing

Choosing an original air filter housing from the Air filter housings category allows you to maintain the parameters specified by BMW engineers. In practice, this means:

• secure fitment to the standard mounting points in the engine compartment,
• proper sealing of connections with intake ducts and the mass air flow sensor,
• compatibility with air filter elements designed for M47N2 engines,
• preservation of the standard operating characteristics of the diesel power unit.

A used, original housing is a good solution in the event of damage to the factory element (cracks, broken mounts, leaks), when you are looking for a technically correct and economical repair without interfering with the intake system design.

Compatibility with the diesel engine

The presented housing has been designed to work with a diesel power unit, which is important for both air flow geometry and the placement of ports and mounts for additional components in the engine compartment. In diesel engines, it is particularly important to:

• maintain proper vacuum and flow throughout the entire intake system,
• ensure stable operation of air mass measurement systems,
• limit the risk of unfiltered air entering the cylinders.

By maintaining the factory housing design, the intake system remains tuned to the engine control unit maps, which promotes repeatable performance parameters of the diesel unit.

Condition and service application

The item comes from a used vehicle, making it an attractive alternative to new parts while maintaining the original specification. This type of housing is particularly suitable for:

• post-accident repairs, where components in the engine compartment have been damaged,
• cases of mechanical damage to the existing housing (cracks, broken tabs),
• restoring the factory configuration after previous intake modifications.

Using an original housing allows you to reduce the risk of fitment issues typical of many aftermarket replacements and facilitates installation in service conditions.

Support with selection and additional information

The product has assigned identifiers, such as SKU, OEM part number, and interchangeable numbers, which facilitate precise verification of compatibility with a specific vehicle configuration. Manufacturer information is marked with the brand parameter, and the product character is defined by the condition and fuel type.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional housings, intake ducts, or filter mounting elements, check out the available parts in the BMW Air filter housings category.

To better plan service work and maintenance in your car, it is worth reading the practical tips included in the article TOP 10 most frequently replaced parts in your car, which will help optimize vehicle maintenance costs.